LT3060EDC-2.5#TRPBF_技术文档

LT3060 Series

45V V , Micropower,

IN

Low Noise, 100mA Low

Dropout, Linear Regulator

DescripTion

FeaTures

The LT^®3060 series are micropower, low dropout voltage

(LDO) linear regulators that operate over a 1.6V to 45V

input supply range. The devices supply 100mA of output

current with a typical dropout voltage of 300mV. A single

externalcapacitorprovidesprogrammablelownoiserefer-

ence performance and output soft-start functionality. The

LT3060’s quiescent current is merely 40μA and provides

fast transient response with a minimum 2.2μF output

capacitor. In shutdown, quiescent current is less than 1μA

and the reference soft-start capacitor is reset.

n

Input Voltage Range: 1.6V to 45V

n

Output Current: 100mA

n

Quiescent Current: 40µA

n

Dropout Voltage: 300mV

n

Low Noise: 30µV

(10Hz to 100kHz)

REF

RMS

n

Adjustable Output: V

= 600mV

Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V

Output Tolerance: 2ꢀ Over Line, Load and

Temperature

n

Single Capacitor Soft-Starts Reference and Lowers

Output Noise

Shutdown Current: < 1µA

Reverse Battery Protection

The LT3060 regulators optimize stability and transient

response with low ESR, ceramic output capacitors.

The regulators do not require the addition of ESR as is

common with other regulators.

n

Current Limit Foldback Protection

Thermal Limit Protection

Internal protection circuitry includes reverse-battery

protection, reverse-output protection, reverse-current

protection, current limit with foldback and thermal

shutdown. The LT3060 series are available in fixed output

voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V, and as an

adjustable voltage regulator with an output voltage range

fromthe600mVreferenceto44.5V.TheLT3060regulators

are offered in the thermally enhanced 8-lead TSOT-23 and

8-lead (2mm × 2mm × 0.75mm) DFN packages.

8-Lead 2mm × 2mm × 0.75mm DFN and 8-Lead

™

ThinSOT Packages

applicaTions

n

Battery-Powered Systems

n

Automotive Power Supplies

n

Industrial Power Supplies

n

Avionic Power Supplies

n

Portable Instruments

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners.

Dropout Voltage

Typical applicaTion

350

2.5V Low Noise Regulator

T

= 25°C

J

300

250

200

150

100

50

V

OUT

IN

OUT

2.5V AT 100mA

30µV NOISE

V

RMS

IN

1µF

LT3060-2.5

C

FF

10nF

3V TO

45V

10µF

SHDN

ADJ

GND REF/BYP

10nF

3060 TA01

0

10 20 30 40 50 60 70 80 90 100

OUTPUT CURRENT (mA)

3060 TA02

3060fa

1

LT3060 Series

absoluTe MaxiMuM raTings ^{(Note 1)}

IN Pin Voltage ........................................................ 50V

OUT Pin Voltage..................................................... 50V

Input-to-Output Differential Voltage (Note 2)......... 50V

ADJ Pin Voltage ..................................................... 50V

SHDN Pin Voltage .................................................. 50V

REF/BYP Pin Voltage....................................... – 0.3V, 1V

Output Short-Circuit Duration.......................... Indefinite

Operating Junction Temperature (Notes 3, 5, 13)

E-, I-Grades .......................................–40°C to 125°C

MP-Grade .......................................... –55°C to 125°C

H-Grade ............................................. –40°C to 150°C

Storage Temperature Range ..................–65°C to 150°C

Lead Temperature (TS8 Soldering, 10 sec)...........300°C

pin conFiguraTion

TOP VIEW

1

2

3

4

8

7

6

5

GND

SHDN

IN

REF/BYP

ADJ

SHDN 1

GND 2

GND 3

GND 4

8 REF/BYP

7 ADJ

6 OUT

5 IN

9

GND

OUT

IN

TS8 PACKAGE

8-LEAD PLASTIC TSOT-23

DC PACKAGE

8-LEAD (2mm × 2mm) PLASTIC DFN

T

= 150°C, θ = 57°C/W TO 67°C/W*, θ = 25°C/W

JMAX

JA

JC

T

= 125°C, θ = 48°C/W TO 60°C/W*, θ = 20°C/W

JA JC

JMAX

EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB

* SEE APPLICATIONS INFORMATION SECTION

orDer inForMaTion

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

LDTD

LFVT

PACKAGE DESCRIPTION

TEMPERATURE RANGE

–40°C to 125°C

LT3060EDC#PBF

LT3060EDC#TRPBF

8-Lead (2mm × 2mm) Plastic DFN

8-Lead Plastic ThinSOT

LT3060IDC#PBF

LT3060IDC#TRPBF

LT3060EDC-1.2#PBF

LT3060IDC-1.2#PBF

LT3060EDC-1.5#PBF

LT3060IDC-1.5#PBF

LT3060EDC-1.8#PBF

LT3060IDC-1.8#PBF

LT3060EDC-2.5#PBF

LT3060IDC-2.5#PBF

LT3060EDC-3.3#PBF

LT3060IDC-3.3#PBF

LT3060EDC-5#PBF

LT3060IDC-5#PBF

LT3060ETS8#PBF

LT3060ITS8#PBF

LT3060EDC-1.2#TRPBF

LT3060IDC-1.2#TRPBF

LT3060EDC-1.5#TRPBF

LT3060IDC-1.5#TRPBF

LT3060EDC-1.8#TRPBF

LT3060IDC-1.8#TRPBF

LT3060EDC-2.5#TRPBF

LT3060IDC-2.5#TRPBF

LT3060EDC-3.3#TRPBF

LT3060IDC-3.3#TRPBF

LT3060EDC-5#TRPBF

LT3060IDC-5#TRPBF

LT3060ETS8#TRPBF

LT3060ITS8#TRPBF

LFVT

LFVV

LFVW

LFVX

LFVY

LFVZ

LTDTF

8-Lead Plastic ThinSOT

3060fa

2

LT3060 Series

orDer inForMaTion

LEAD FREE FINISH

LT3060MPTS8#PBF

LT3060HTS8#PBF

LT3060ETS8-1.2#PBF

LT3060ITS8-1.2#PBF

LT3060MPTS8-1.2#PBF

LT3060HTS8-1.2#PBF

LT3060ETS8-1.5#PBF

LT3060ITS8-1.5#PBF

LT3060MPTS8-1.5#PBF

LT3060HTS8-1.5#PBF

LT3060ETS8-1.8#PBF

LT3060ITS8-1.8#PBF

LT3060MPTS8-1.8#PBF

LT3060HTS8-1.8#PBF

LT3060ETS8-2.5#PBF

LT3060ITS8-2.5#PBF

LT3060MPTS8-2.5#PBF

LT3060HTS8-2.5#PBF

LT3060ETS8-3.3#PBF

LT3060ITS8-3.3#PBF

LT3060MPTS8-3.3#PBF

LT3060HTS8-3.3#PBF

LT3060ETS8-5#PBF

LT3060ITS8-5#PBF

LT3060MPTS8-5#PBF

LT3060HTS8-5#PBF

LEAD BASED FINISH

LT3060EDC

TAPE AND REEL

PART MARKING*

LTDTF

PACKAGE DESCRIPTION

8-Lead Plastic ThinSOT

TEMPERATURE RANGE

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

TEMPERATURE RANGE

–40°C to 125°C

LT3060MPTS8#TRPBF

LT3060HTS8#TRPBF

LT3060ETS8-1.2#TRPBF

LT3060ITS8-1.2#TRPBF

LTDTF

8-Lead Plastic ThinSOT

LTFWB

8-Lead Plastic ThinSOT

LTFWB

8-Lead Plastic ThinSOT

LT3060MPTS8-1.2#TRPBF LTFWB

8-Lead Plastic ThinSOT

LT3060HTS8-1.2#TRPBF

LT3060ETS8-1.5#TRPBF

LT3060ITS8-1.5#TRPBF

LTFWB

LTFWC

8-Lead Plastic ThinSOT

LT3060MPTS8-1.5#TRPBF LTFWC

8-Lead Plastic ThinSOT

LT3060HTS8-1.5#TRPBF

LT3060ETS8-1.8#TRPBF

LT3060ITS8-1.8#TRPBF

LTFWC

LTFWD

8-Lead Plastic ThinSOT

LT3060MPTS8-1.8#TRPBF LTFWD

8-Lead Plastic ThinSOT

LT3060HTS8-1.8#TRPBF

LT3060ETS8-2.5#TRPBF

LT3060ITS8-2.5#TRPBF

LTFWD

LTFWF

8-Lead Plastic ThinSOT

LT3060MPTS8-2.5#TRPBF LTFWF

8-Lead Plastic ThinSOT

LT3060HTS8-2.5#TRPBF

LT3060ETS8-3.3#TRPBF

LT3060ITS8-3.3#TRPBF

LTFWF

LTFWG

8-Lead Plastic ThinSOT

LT3060MPTS8-3.3#TRPBF LTFWG

8-Lead Plastic ThinSOT

LT3060HTS8-3.3#TRPBF

LT3060ETS8-5#TRPBF

LT3060ITS8-5#TRPBF

LT3060MPTS8-5#TRPBF

LT3060HTS8-5#TRPBF

TAPE AND REEL

LTFWG

LTFWH

PART MARKING*

LDTD

8-Lead Plastic ThinSOT

PACKAGE DESCRIPTION

8-Lead (2mm × 2mm) Plastic DFN

LT3060EDC#TR

LT3060IDC

LT3060IDC#TR

LDTD

LT3060EDC-1.2

LT3060EDC-1.2#TR

LT3060IDC-1.2#TR

LT3060EDC-1.5#TR

LT3060IDC-1.5#TR

LT3060EDC-1.8#TR

LT3060IDC-1.8#TR

LT3060EDC-2.5#TR

LT3060IDC-2.5#TR

LT3060EDC-3.3#TR

LT3060IDC-3.3#TR

LFVT

LT3060IDC-1.2

LFVT

LT3060EDC-1.5

LFVV

LT3060IDC-1.5

LFVV

LT3060EDC-1.8

LFVW

LT3060IDC-1.8

LFVW

LT3060EDC-2.5

LFVX

LT3060IDC-2.5

LFVX

LT3060EDC-3.3

LFVY

LT3060IDC-3.3

LFVY

3060fa

3

LT3060 Series

orDer inForMaTion

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

LFVZ

PACKAGE DESCRIPTION

8-Lead (2mm × 2mm) Plastic DFN

8-Lead Plastic ThinSOT

TEMPERATURE RANGE

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

–40°C to 125°C

–55°C to 125°C

–40°C to 150°C

LT3060EDC-5

LT3060EDC-5#TR

LT3060IDC-5

LT3060IDC-5#TR

LFVZ

LT3060ETS8

LT3060ETS8#TR

LTDTF

LT3060ITS8

LT3060ITS8#TR

LTDTF

LT3060MPTS8

LT3060MPTS8#TR

LT3060HTS8#TR

LTDTF

LT3060HTS8

LTDTF

LT3060ETS8-1.2

LT3060ITS8-1.2

LT3060MPTS8-1.2

LT3060HTS8-1.2

LT3060ETS8-1.5

LT3060ITS8-1.5

LT3060MPTS8-1.5

LT3060HTS8-1.5

LT3060ETS8-1.8

LT3060ITS8-1.8

LT3060MPTS8-1.8

LT3060HTS8-1.8

LT3060ETS8-2.5

LT3060ITS8-2.5

LT3060MPTS8-2.5

LT3060HTS8-2.5

LT3060ETS8-3.3

LT3060ITS8-3.3

LT3060MPTS8-3.3

LT3060HTS8-3.3

LT3060ETS8-5

LT3060ITS8-5

LT3060ETS8-1.2#TR

LT3060ITS8-1.2#TR

LT3060MPTS8-1.2#TR

LT3060HTS8-1.2#TR

LT3060ETS8-1.5#TR

LT3060ITS8-1.5#TR

LT3060MPTS8-1.5#TR

LT3060HTS8-1.5#TR

LT3060ETS8-1.8#TR

LT3060ITS8-1.8#TR

LT3060MPTS8-1.8#TR

LT3060HTS8-1.8#TR

LT3060ETS8-2.5#TR

LT3060ITS8-2.5#TR

LT3060MPTS8-2.5#TR

LT3060HTS8-2.5#TR

LT3060ETS8-3.3#TR

LT3060ITS8-3.3#TR

LT3060MPTS8-3.3#TR

LT3060HTS8-3.3#TR

LT3060ETS8-5#TR

LT3060ITS8-5#TR

LT3060MPTS8-5#TR

LT3060HTS8-5#TR

LTFWB

LTFWC

LTFWD

LTFWF

LTFWG

LTFWH

LT3060MPTS8-5

LT3060HTS8-5

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

3060fa

4

LT3060 Series

elecTrical characTerisTics ^Thel denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T_A= 25°C. (Note 3)

PARAMETER

CONDITIONS

= 100mA

MIN

TYP

MAX

UNITS

l

Minimum Input Voltage

(Notes 4, 12)

I

1.6

2.1

V

LOAD

Regulated Output Voltage

(Note 5)

LT3060-1.2: V = 2.1V, I

= 1mA

LOAD

1.2

V

1.188

1.176

1.170

1.212

1.224

IN

l

2.1V < V < 45V, 1mA < I

< 100mA (E-, I-, MP-Grades)

< 100mA (H-Grade)

IN

LOAD

2.1V < V < 45V, 1mA < I

IN

LT3060-1.5: V = 2.1V, I

= 1mA

LOAD

1.5

V

1.485

1.470

1.463

1.515

1.530

IN

l

2.1V < V < 45V, 1mA < I

< 100mA (E-, I-, MP-Grades)

< 100mA (H-Grade)

IN

LOAD

2.1V < V < 45V, 1mA < I

IN

LT3060-1.8: V = 2.35V, I

= 1mA

LOAD

1.8

V

1.782

1.764

1.755

1.818

1.836

IN

l

2.35V < V < 45V, 1mA < I

< 100mA (E-, I-, MP-Grades)

LOAD

IN

2.35V < V < 45V, 1mA < I

< 100mA (H-Grade)

IN

LT3060-2.5: V = 3.05V, I

= 1mA

LOAD

2.5

V

2.475

2.450

2.438

2.525

2.550

IN

l

3.05V < V < 45V, 1mA < I

< 100mA (E-, I-, MP-Grades)

< 100mA (H-Grade)

IN

LOAD

3.05V < V < 45V, 1mA < I

IN

LT3060-3.3: V = 3.85V, I

= 1mA

LOAD

3.3

V

3.267

3.234

3.218

3.333

3.366

IN

l

3.85V < V < 45V, 1mA < I

< 100mA (E-, I-, MP-Grades)

< 100mA (H-Grade)

IN

LOAD

3.85V < V < 45V, 1mA < I

IN

LT3060-5:

LT3060:

V

= 5.55V, I

= 1mA

LOAD

5

V

4.950

4.900

4.875

5.050

5.100

IN

l

5.55V < V < 45V, 1mA < I

< 100mA (E-, I-, MP-Grades)

< 100mA (H-Grade)

IN

LOAD

5.55V < V < 45V, 1mA < I

ADJ Pin Voltage

(Notes 4, 5)

V

= 2.1V, I

= 1mA

LOAD

594

588

585

600

606

612

mV

IN

l

2.1V < V < 45V, 1mA < I

< 100mA (E-, I-, MP-Grades)

< 100mA (H-Grade)

IN

LOAD

2.1V < V < 45V, 1mA < I

l

Line Regulation

LT3060-1.2: ΔV = 2.1V to 45V, I

= 1mA

(E-, I-, MP-Grades)

(H-Grade)

0.9

3.5

7

mV

IN

LOAD

ΔV = 2.1V to 45V, I

IN

LT3060-1.5: ΔV = 2.1V to 45V, I

= 1mA

(E-, I-, MP-Grades)

(H-Grade)

1

4.2

8

IN

LOAD

ΔV = 2.1V to 45V, I

IN

LT3060-1.8: ΔV = 2.35V to 45V, I

= 1mA

(E-, I-, MP-Grades)

(H-Grade)

1.1

1.2

1.3

1.5

0.6

2.4

2.5

2.6

2.8

3.1

3.7

0.2

4.5

12

IN

LOAD

ΔV = 2.35V to 45V, I

IN

LT3060-2.5: ΔV = 3.05V to 45V, I

= 1mA

(E-, I-, MP-Grades)

(H-Grade)

5.4

15

IN

LOAD

ΔV = 3.05V to 45V, I

IN

LT3060-3.3: ΔV = 3.85V to 45V, I

= 1mA

(E-, I-, MP-Grades)

(H-Grade)

7

19

IN

LOAD

ΔV = 3.85V to 45V, I

IN

LT3060-5: ΔV = 5.55V to 45V, I

= 1mA

(E-, I-, MP-Grades)

(H-Grade)

8.5

25

IN

LOAD

ΔV = 5.55V to 45V, I

IN

LT3060:

(Note 4)

ΔV = 2.1V to 45V, I

IN

= 1mA

(E-, I-, MP-Grades)

(H-Grade)

3.5

4

IN

LOAD

ΔV = 2.1V to 45V, I

l

Load Regulation

(Note 15)

LT3060-1.2: V = 2.1V, I

= 1mA to 100mA

(E-, I-, MP-Grades)

(H-Grade)

10

18

mV

IN

LOAD

V

= 2.1V, I

IN

l

LT3060-1.5: V = 2.1V, I

= 1mA to 100mA

(E-, I-, MP-Grades)

(H-Grade)

12

22

mV

IN

LOAD

V

= 2.1V, I

IN

l

LT3060-1.8: V = 2.35V, I

= 1mA to 100mA

(E-, I-, MP-Grades)

(H-Grade)

14

27

mV

IN

LOAD

V

= 2.35V, I

IN

l

LT3060-2.5: V = 3.05V, I

= 1mA to 100mA

(E-, I-, MP-Grades)

(H-Grade)

19

37

mV

IN

LOAD

V

= 3.05V, I

IN

l

LT3060-3.3: V = 3.85V, I

= 1mA to 100mA

(E-, I-, MP-Grades)

(H-Grade)

24

49

mV

IN

LOAD

V

= 3.85V, I

IN

l

LT3060-5:

V

= 5.55V, I

= 1mA to 100mA

(E-, I-, MP-Grades)

(H-Grade)

35

75

mV

IN

LOAD

l

LT3060:

(Note 4)

V

= 2.1V, I

= 1mA to 100mA

(E-, I-, MP-Grades)

(H-Grade)

4

9

mV

IN

LOAD

3060fa

5

LT3060 Series

elecTrical characTerisTics ^Thel denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T_A= 25°C. (Note 3)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Dropout Voltage

I

= 1mA

75

110

180

mV

LOAD

l

V

= V

IN

OUT(NOMINAL)

(Notes 6, 7)

I

= 10mA

150

240

300

200

300

mV

LOAD

I

= 50mA (Note 14)

280

410

mV

LOAD

I

= 100mA (Note 14)

350

510

mV

LOAD

l

GND Pin Current

I

= 0µA

40

60

160

0.8

2

80

100

350

1.8

4

µA

LOAD

V

= V

+ 0.55V

= 1mA

IN

OUT(NOMINAL)

= 10mA

= 50mA

= 100mA

µA

(Notes 6, 8)

mA

Quiescent Current in

Shutdown

V

= 45V, V

= 0V

SHDN

0.3

15

30

1

µA

IN

l

ADJ Pin Bias Current

(Notes 4, 9)

V

= 2.1V

60

nA

IN

Output Voltage Noise

C

V

= 10µF, I

= 600mV, BW = 10Hz to 100kHz

= 100mA, C

= 0.01µF

µV

RMS

OUT

LOAD

BYP

l

Shutdown Threshold

V

OUT

V

OUT

= Off to On

= On to Off

0.8

0.7

1.5

V

0.3

l

SHDN Pin Current

V

= 0V

1

3

µA

SHDN

(Note 10)

= 45V

0.9

79

77

75

73

70

67

85

200

Ripple Rejection

64

62

60

58

55

52

70

dB

LT3060-1.2: V = 2.7V (Avg)

IN

V

= 0.5V

,

RIPPLE P-P

= 120Hz,

RIPPLE

LT3060-1.5: V = 3V (Avg)

IN

f

I

LT3060-1.8: V = 3.3V (Avg)

= 100mA

IN

LOAD

LT3060-2.5: V = 4V (Avg)

IN

LT3060-3.3: V = 4.8V (Avg)

IN

LT3060-5:

LT3060:

V

= 6.5V (Avg)

IN

= 2.1V (Avg) (Note 4)

Current Limit

V

= 7V, V

= 0

mA

IN

OUT

l

= V

+ 1V (Notes 6, 12), ΔV

= –5ꢀ

110

OUT(NOMINAL)

OUT

Input Reverse Leakage

Current

V

= –45V, V

= 0

OUT

300

µA

IN

Reverse Output Current

(Note 11)

5

10

µA

LT3060-1.2: V

LT3060-1.5: V

LT3060-1.8: V

LT3060-2.5: V

LT3060-3.3: V

= 1.2V, V = 0V

IN

OUT

= 1.5V, V = 0V

IN

5

= 1.8V, V = 0V

IN

5

= 2.5V, V = 0V

IN

5

= 3.3V, V = 0V

IN

5

LT3060-5:

LT3060:

V

= 5V, V = 0V

IN

0.2

= 1.2V, V = 0V (Note 4)

IN

3060fa

6

LT3060 Series

elecTrical characTerisTics

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 7: Dropout voltage is the minimum input-to-output voltage

differential needed to maintain regulation at a specified output current.

In dropout, the output voltage equals: (V – V ). For the

LT3060, LT3060-1.2, LT3060-1.5 and LT3060-1.8, dropout is limited

by the minimum input specification under some output voltages and

load conditions. See the Minimum Input Voltage curve in the Typical

Performance Characteristics section.

IN

DROPOUT

Note 2: Absolute maximum input-to-output differential voltage is not

achievable with all combinations of rated IN pin and OUT pin voltages.

With the IN pin at 50V, the OUT pin may not be pulled below 0V. The total

measured voltage from IN to OUT must not exceed 50V.

Note 8: GND pin current is tested with V = V

+ 0.55V and a

OUT(NOMINAL)

IN

Note 3: The LT3060 regulators are tested and specified under pulse load

conditions such that T ≅ T . The LT3060E regulators are 100ꢀ tested

current source load. GND pin current will increase in dropout. See GND pin

current curves in the Typical Performance Characteristics section.

J

A

at T = 25°C. Performance at –40°C to 125°C is assured by design,

A

Note 9: ADJ pin bias current flows out of the ADJ pin.

Note 10: SHDN pin current flows into the SHDN pin.

Note 11: Reverse output current is tested with the IN pin grounded and the

OUT pin forced to the rated output voltage. This current flows into the OUT

pin and out of the GND pin.

characterization and correlation with statistical process controls. The

LT3060I regulators are guaranteed over the full –40°C to 125°C operating

junction temperature range. The LT3060MP regulators are 100ꢀ tested

over the –55°C to 125°C operating junction temperature range. The

LT3060H regulators are 100ꢀ tested at the 150°C operating junction

temperature. High junction temperatures degrade operating lifetimes.

Operating lifetime is derated at junction temperatures greater than 125°C.

Note 12: To satisfy requirements for minimum input voltage, current

limit is tested at V = V

+ 1V or V = 2.1V, whichever is

IN

OUT(NOMINAL)

IN

greater.

Note 4: The LT3060 adjustable version is tested and specified for these

conditions with the ADJ connected to the OUT pin.

Note 13: This IC includes overtemperature protection that protects the

device during momentary overload conditions. Junction temperature

will exceed 125°C (LT3060E, LT3060I, LT3060MP) or 150°C (LT3060H)

when overtemperature circuitry is active. Continuous operation above the

specified maximum junction temperature may impair device reliability.

Note 5: Maximum junction temperature limits operating conditions. The

regulated output voltage specification does not apply for all possible

combinations of input voltage and output current. Limit the output current

range if operating at the maximum input-to-output voltage differential.

Limit the input-to-output voltage differential if operating at maximum

output current. Current limit foldback will limit the maximum output

current as a function of input-to-output voltage. See Current Limit vs

Note 14: The dropout voltage specification is guaranteed for the DFN

package. The dropout voltage specification for high output currents cannot

be guaranteed for the TS8 package due to production test limitations.

V

– V

in the Typical Performance Characteristics section.

IN

OUT

Note 15: The load regulation specification is guaranteed for the fixed

voltage options in the DFN package. The load regulation specification

cannot be guaranteed for the fixed voltage options in the TS8 package due

to production test limitations. The TS8 packages are tested similarly to the

LT3060 adjustable version with the ADJ connected to the OUT pin.

Note 6: To satisfy minimum input voltage requirements, the LT3060

adjustable version is tested and specified for these conditions with an

external resistor divider (bottom 115k, top 365k) for an output voltage of

2.5V. The external resistor divider adds 5µA of DC load on the output. This

external current is not factored into GND pin current.

3060fa

7

LT3060 Series

T_A= 25°C, unless otherwise noted.

Typical perForMance characTerisTics

Typical Dropout Voltage

Guaranteed Dropout Voltage

Dropout Voltage

550

500

450

400

350

300

250

200

150

100

50

550

500

450

400

350

300

250

200

150

100

50

550

500

450

400

350

300

250

200

150

100

50

= TEST POINTS

I

= 100mA

L

T ≤ 150°C

J

I

= 50mA

= 10mA

L

T = 125°C

J

T ≤ 25°C

J

I

T = 25°C

J

I

= 1mA

L

0

10 20 30 40 50 60 70 80 90 100

OUTPUT CURRENT (mA)

0

10 20 30 40 50 60 70 80 90 100

OUTPUT CURRENT (mA)

–75 –50 –25

0

25 50 75 100 125 150 175

TEMPERATURE (°C)

3060 G01

3060 G02

3060 G03

Quiescent Current

LT3060-1.2 Output Voltage

LT3060-1.5 Output Voltage

1.224

1.220

1.216

1.212

1.208

1.204

1.200

1.196

1.530

1.525

1.520

1.515

1.510

1.505

1.500

1.495

80

70

60

50

40

30

20

10

0

I

= 1mA

I = 1mA

L

V

= 6V, V

= V

SHDN IN

L

IN

L

R

= ∞ (120k FOR LT3060)

I

= 0 (5µA FOR LT3060)

L

LT3060-1.2/-1.5/-1.8/-2.5/-3.3/-5

LT3060

1.192

1.188

1.184

1.490

1.485

1.480

1.180

1.176

1.475

1.470

V

= 0V

SHDN

–75 –50 –25

0

25 50 75 100 125 150 175

–75 –50 –25

0

25 50 75 100 125 150 175

–75 –50 –25

0

25 50 75 100 125 150 175

TEMPERATURE (°C)

3060 G04

3060 G05

3060 G06

LT3060-1.8 Output Voltage

LT3060-2.5 Output Voltage

LT3060-3.3 Output Voltage

1.836

1.830

1.824

1.818

1.812

1.806

1.800

1.794

2.55

2.54

2.53

2.52

2.51

2.50

2.49

2.48

2.47

2.46

2.45

3.366

3.355

3.344

3.333

3.322

3.311

3.300

3.289

I

= 1mA

I

= 1mA

I = 1mA

L

1.788

1.782

1.776

3.278

3.267

3.256

1.770

1.764

3.245

3.234

–75 –50 –25

0

25 50 75 100 125 150 175

–75 –50 –25

0

25 50 75 100 125 150 175

–75 –50 –25

0

25 50 75 100 125 150 175

TEMPERATURE (°C)

3060 G07

3060 G08

3060 G09

3060fa

8

LT3060 Series

T_A= 25°C, unless otherwise noted.

Typical perForMance characTerisTics

LT3060-5 Output Voltage

LT3060 ADJ Pin Voltage

LT3060-1.2 Quiescent Current

200

175

150

125

100

75

5.10

5.08

5.06

5.04

5.02

5.00

4.98

4.96

4.94

4.92

4.90

0.612

0.610

0.608

0.606

0.604

0.602

0.600

0.598

T = 25°C

J

I

= 1mA

I

= 1mA

= 2.1V

L

IN

R

V

= 240k

OUT

V

L

= 1.2V

0.596

0.594

0.592

V

= V

IN

SHDN

50

25

0.590

0.588

V

= 0V

6

SHDN

0

1

2

3

4

5

7

8

9

10

–75 –50 –25

0

25 50 75 100 125 150 175

–75 –50 –25

0

25 50 75 100 125 150 175

INPUT VOLTAGE (V)

TEMPERATURE (°C)

3060 G11

3060 G12

3060 G10

LT3060-2.5 Quiescent Current

LT3060-1.5 Quiescent Current

LT3060-1.8 Quiescent Current

200

175

150

125

100

75

200

175

150

125

100

75

200

175

150

125

100

75

T = 25°C

J

T

R

V

= 25°C

= 360k

= 1.8V

T = 25°C

J

L

R

V

= 300k

OUT

R

V

= 500k

OUT

L

= 1.5V

= 2.5V

OUT

V

= V

IN

V

= V

IN

V

= V

IN

SHDN

50

25

V

= 0V

6

V

= 0V

6

V

= 0V

6

SHDN

0

1

2

3

4

5

7

8

9

10

0

1

2

3

4

5

7

8

9

10

0

1

2

3

4

5

7

8

9

10

INPUT VOLTAGE (V)

3060 G13

3060 G14

3060 G15

LT3060-3.3 Quiescent Current

LT3060-5 Quiescent Current

LT3060 Quiescent Current

80

70

60

50

40

30

20

10

0

200

175

150

125

100

75

200

175

150

125

100

75

T = 25°C

J

T = 25°C

J

R

= 120k

= 0.6V

R

V

= 660k

OUT

R

V

= 1M

L

OUT

L

V

= 3.3V

= 5V

OUT

V

= V

IN

SHDN

V

= V

V

= V

SHDN IN

SHDN

IN

50

25

V

= 0

V

= 0V

7

V

= 0V

8

SHDN

0

5

10 15 20 25 30 35 40 45

INPUT VOLTAGE (V)

0

1

2

3

4

5

6

8

9

10

0

1

2

3

4

5

6

7

9

10

INPUT VOLTAGE (V)

3060 G16

3060 G17

3060 G18

3060fa

9

LT3060 Series

T_A= 25°C, unless otherwise noted.

Typical perForMance characTerisTics

LT3060-1.2 GND Pin Current

LT3060-1.5 GND Pin Current

LT3060-1.8 GND Pin Current

2.50

2.25

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

2.50

2.25

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

2.50

2.25

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

T = 25°C

OUT

SHDN

T = 25°C

J

T = 25°C

OUT

SHDN

J

*FOR V

V

= 1.5V

= V

*FOR V

V

= 1.8V

OUT

*FOR V

V

= 1.2V

= V

IN

SHDN

IN

R

L

= 18Ω

R

L

= 12Ω

R

L

= 15Ω

L

I

= 100mA*

I

= 100mA*

I

= 100mA*

R

L

= 30Ω

R = 36Ω

L

R

L

= 24Ω

L

I

= 50mA*

I

L

= 50mA*

I

= 50mA*

R

L

= 1.5k

R

L

= 1.8k

L

R

L

= 1.2k

L

R

L

= 150Ω

R

L

= 180Ω

R

L

= 120Ω

L

I

= 1mA*

I

= 1mA*

I

= 1mA*

I

= 10mA*

I

= 10mA*

I

= 10mA*

0

1

2

3

4

5

6

7

8

9

10

0

1

2

3

4

5

6

7

8

9

10

0

1

2

3

4

5

6

7

8

9

10

INPUT VOLTAGE (V)

3060 G20

3060 G21

3060 G19

LT3060-5 GND Pin Current

LT3060-2.5 GND Pin Current

LT3060-3.3 GND Pin Current

2.50

2.25

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

2.50

2.25

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

2.50

2.25

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

T = 25°C

J

OUT

SHDN

T = 25°C

J

OUT

SHDN

J

*FOR V

V

= 2.5V

*FOR V

V

= 5V

*FOR V

V

= 3.3V

OUT

= V

IN

= V

IN

SHDN

IN

R

L

= 25Ω

L

R

L

= 50Ω

R

L

= 33Ω

L

I

= 100mA*

I

= 100mA*

I

= 100mA*

R

L

= 50Ω

R

L

= 100Ω

L

R

L

= 66Ω

L

I

= 50mA*

I

= 50mA*

I

= 50mA*

R

L

= 5k

L

R

L

= 3.3k

R

L

= 2.5k

L

I

= 1mA*

R

L

= 250Ω

R

L

= 500Ω

L

R = 330Ω

L

I

= 1mA*

I

= 1mA*

I

= 10mA*

I

= 10mA*

I

= 10mA*

0

1

2

3

4

5

6

7

8

9

10

0

2

3

4

5

6

7

8

9

10

0

1

2

3

4

5

6

7

8

9

10

INPUT VOLTAGE (V)

3060 G22

3060 G24

3060 G23

LT3060 GND Pin Current

GND Pin Current vs I_LOAD

2.50

2.25

2.00

1.75

1.50

1.25

1.00

0.75

0.50

0.25

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

T = 25°C

V

= V

+ 1V

OUT(NOMINAL)

J

IN

*FOR V

= 0.6V

OUT

SHDN

V

= V

IN

R

L

= 6Ω

L

I

= 100mA*

R

I

= 12Ω

= 50mA*

L

R

L

= 600Ω

L

R

I

= 60Ω

= 10mA*

L

I

= 1mA*

0

1

2

3

4

5

6

7

8

9

10

0

10 20 30 40 50 60 70 80 90 100

INPUT VOLTAGE (V)

OUTPUT CURRENT (mA)

3060 G25

3060 G26

3060fa

10

LT3060 Series

T_A= 25°C, unless otherwise noted.

Typical perForMance characTerisTics

SHDN Pin Input Current

SHDN Pin Threshold

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

1.5

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

V

= 45V

SHDN

OFF TO ON

ON TO OFF

–75 –50 –25

0

25 50 75 100 125 150 175

0

5

10 15 20 25 30 35 40 45

–75 –50 –25

0

25 50 75 100 125 150 175

TEMPERATURE (°C)

SHDN PIN VOLTAGE (V)

TEMPERATURE (°C)

3060 G29

3060 G28

3060 G27

ADJ Pin Bias Current

Current Limit vs Temperature

Current Limit vs V_IN–V_OUT

250

225

200

175

150

125

100

75

50

40

250

225

200

175

150

125

100

75

∆V

= –5%

OUT

T = 125°C

J

T = 25°C

J

30

20

T = –50°C

J

10

0

–10

–20

–30

–40

–50

50

V

= 7V

IN

OUT

25

= 0V

0

–75 –50 –25

0

25 50 75 100 125 150 175

–75 –50 –25

0

25 50 75 100 125 150 175

0

5

10 15 20 25 30 35 40 45

TEMPERATURE (°C)

INPUT/OUTPUT DIFFERENTIAL (V)

3060 G32

3060 G30

3060 G31

LT3060-1.2/-1.5/-1.8/-2.5/-3.3/-5

Reverse Output Current

LT3060 Reverse Output Current

Reverse Output Current

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

50

45

40

35

30

25

20

15

10

5

350

300

250

200

150

100

50

T = 25°C

J

T = 25°C

IN

V

= 0V, V

= V

= 1.2V (LT3060)

ADJ

J

IN

OUT

LT3060-1.2

V

= 0V

V

= 0V

= 1.2V (LT3060-1.2)

= 1.5V (LT3060-1.5)

= 1.8V (LT3060-1.8)

= 2.5V (LT3060-2.5)

= 3.3V (LT3060-3.3)

= 5V (LT3060-5)

IN

OUT

CURRENT FLOWS

INTO OUT PIN

LT3060-1.5

LT3060-1.8

V

= V

OUT

ADJ

LT3060-2.5

LT3060-3.3

ADJ (LT3060)

ADJ

OUT (LT3060-1.2/-1.5/

-1.8/2.5/-3.3/-5)

LT3060-5

OUT

OUT (LT3060)

25 50 75 100 125 150 175

0

5

10 15 20 25 30 35 40 45

–75 –50 –25

0

5

10 15 20 25 30 35 40 45

OUTPUT VOLTAGE (V)

TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

3060 G33

3060 G34

3060 G35

3060fa

11

LT3060 Series

T_A= 25°C, unless otherwise noted.

Typical perForMance characTerisTics

Input Ripple Rejection

LT3060-5 Input Ripple Rejection

Ripple Rejection vs Temperature

100

90

80

70

60

50

40

30

20

10

0

100

90

80

70

60

50

40

30

20

10

0

100

90

80

70

60

50

40

30

20

10

0

C

= 10nF

C

= C = 10nF

FF

REF/BYP

V

= 0.6V

OUT

C

= 10nF, C = 0

FF

REF/BYP

C

= 0

REF/BYP

V

= 5V

OUT

C

= 10µF

OUT

I

C

V

= 100mA

I

= 100mA

= 5V

L

OUT

I

V

= 100mA

L

= C = 0

V

C

V

C

= C = 0

FF

REF/BYP

= V

FF

REF/BYP

= 0.6V

OUT

+ 1.5V +

= 10µF

IN

OUT(NOMINAL)

RIPPLE

OUT

= 2.6V + 0.5V RIPPLE AT f = 120Hz

C

= 2.2µF

IN

P-P

50mV

= 6V + 50mV

RIPPLE

RMS

OUT

RMS

IN

–75 –50 –25

0

25 50 75 100 125 150 175

10

100

1k

10k 100k 1M

10M

10

100

1k

10k 100k 1M

10M

TEMPERATURE (°C)

FREQUENCY (Hz)

3060 G38

3060 G36

3060 G37

Output Noise Spectral Density

C_REF/BYP= 0, C_FF= 0

Minimum Input Voltage

Load Regulation

5

0

2.2

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

10

1

I

= 100mA

L

–5

I

= 50mA

L

–10

–15

–20

–25

LT3060-5

V

= 5V

OUT

LT3060-3.3

LT3060-2.5

LT3060-1.8

LT3060-1.5

LT3060-1.2

LT3060

= 3.3V

= 2.5V

= 1.8V

= 1.5V

= 1.2V

= 0.6V

0.1

0.01

C

I

= 10µF

OUT

L

V

= V

IN

= 100mA

SHDN

–75 –50 –25

0

25 50 75 100 125 150 175

TEMPERATURE (°C)

+ 0.55V (LT3060-1.8/-2.5/-3.3/-5)

–75 –50 –25

0

25 50 75 100 125 150 175

10

100

1k

FREQUENCY (Hz)

10k

100k

3060 G40

TEMPERATURE (°C)

3060 G39

3060 G41

V

IN

V

IN

= V

OUT(NOMINAL)

= 2.1V (LT3060/-1.2/-1.5)

∆I = 1mA TO 100mA

L

Output Noise Spectral Density

vs C_REF/BYP, C_FF= 0

Output Noise Spectral Density

vs C_FF, C_REF/BYP= 10nF

10

1

10

1

C

= 100pF

REF/BYP

V

= 5V

OUT

C

= 0

FF

V

= 0.6V

OUT

C

FF

= 10nF

0.1

0.01

0.1

0.01

C

= 10nF

REF/BYP

C

= 1nF

1k

C

= 1nF

FF

REF/BYP

V

C

L

= 5V

OUT

C

= 100pF

10k

C

L

= 10µF

FF

OUT

= 100mA

= 10µF

I

= 100mA

10

100

1k

FREQUENCY (Hz)

10k

100k

10

100

100k

FREQUENCY (Hz)

3060 G42

3060 G43

3060fa

12

LT3060 Series

T_A= 25°C, unless otherwise noted.

Typical perForMance characTerisTics

RMS Output Noise vs Load Current

vs C_REF/BYP, C_FF= 0

RMS Output Noise vs Load Current

C_REF/BYP= 10nF, C_FF= 0

RMS Output Noise

vs Feedforward Capacitor (C_FF)

110

100

90

80

70

60

50

40

30

20

10

0

170

160

150

140

130

120

110

100

90

120

110

100

90

80

70

60

50

40

30

20

10

0

V

C

= 0.6V

= 10µF

OUT

f = 10Hz TO 100kHz

OUT

V

= 5V

V

= 5V

OUT

C

= 0

REF/BYP

C

= 10nF

C

= 10µF

REF/BYP

OUT

V

= 3.3V

= 10µF

OUT

V

= 2.5V

I

= 5µA

OUT

FB-DIVIDER

= 100mA

L

V

= 2.5V

C

= 10pF

OUT

REF/BYP

V

= 3.3V

OUT

V

= 1.8V

OUT

V

= 1.5V

OUT

C

= 100pF

REF/BYP

80

70

60

C

= 1nF

REF/BYP

50

40

V

= 1.2V

= 0.6V

OUT

C

= 10nF

REF/BYP

V

OUT

= 0.6V

30

V

= 1.8V

V

= 1.2V

OUT

20

C

1

= 100nF

REF/BYP

10

V

= 1.5V

OUT

0

0.01

0.1

10

100

0.01

0.1

1

10

100

10p

100p

1n

10n

LOAD CURRENT (mA)

3060 G44

LOAD CURRENT (mA)

FEEDFORWARD CAPACITOR, C (F)

FF

3060 G45

3060 G46

LT3060-5 10Hz to 100kHz Output

Noise, C_REF/BYP= 10nF, C_FF= 10nF

LT3060-5 10Hz to 100kHz Output

Noise, C_REF/BYP= 10nF, C_FF= 0

V

OUT

100µV/DIV

3060 G47

3060 G48

C

I

= 10µF

= 100mA

= 5V

1ms/DIV

C

I

= 10µF

= 100mA

= 5V

1ms/DIV

OUT

L

OUT

L

OUT

V

LT3060-5 Transient Response,

C_FF= 10nF

C

_FF= 0

V

= 5V

V

= 5V

OUT

V

OUT

20mV/DIV

OUT

50mV/DIV

∆I

OUT

= 10mA TO 100mA

∆I

OUT

= 10mA TO 100mA

I

OUT

50mA/DIV

OUT

50mA/DIV

3060 G49

3060 G50

V

C

= 6V

100µs/DIV

V

C

= 6V

20µs/DIV

IN

OUT

IN

OUT

= C = 10µF

IN

I

= 5µA

I

= 5µA

FB-DIVIDER

3060fa

13

LT3060 Series

T_A= 25°C, unless otherwise noted.

Typical perForMance characTerisTics

SHDN Transient Response

C_REF/BYP= 10nF

LT3060-5 Transient Response

Load Dump

SHDN Transient Response

C_REF/BYP= 0

V

OUT

V

OUT

V

= 5V

OUT

2V/DIV

= 50Ω

V

OUT

2V/DIV

= 50Ω

R

10mV/DIV

L

R

L

V

= 12V TO 45V

IN

REF/BYP

500mV/DIV

REF/BYP

500mV/DIV

SHDN

1V/DIV

SHDN

1V/DIV

V

IN

10V/DIV

3060 G53

3060 G51

3060 G52

4ms/DIV

2ms/DIV

4ms/DIV

C

= C = 2.2µF

IN

OUT

FF

C

= C = 2.2µF

C

= C = 2.2µF

OUT IN

OUT

IN

= 0

= C = 10nF

C

= 0

FF

REF/BYP

FF

= 5µA

I

FB-DIVIDER

Start-Up Time

vs REF/BYP Capacitor

Start-Up Time vs C_FF

100

10

C

= 0

C

= 0

REF/BYP

FF

LT3060-5

I

= 5µA

FB-DIVIDER

LT3060-3.3

10

1

LT3060-2.5

LT3060-1.8

1

LT3060-1.5

0.1

0.01

0.1

LT3060-1.2

100p

0.01

10p

100p

1n

10n

100n

10p

1n

10n

100n

REF/BYP CAPACITOR (F)

FEEDFORWARD CAPACITOR, C (F)

FF

3060 G54

3060 G55

3060fa

14

LT3060 Series

pin FuncTions ^(DC8/TS8)

REF/BYP (Pin 1/Pin 8): Reference/Bypass. Connecting

a single capacitor from this pin to GND bypasses the

LT3060’s reference noise and soft-starts the reference.

A 10nF bypass capacitor typically reduces output voltage

IN (Pins 5, 6/Pin 5): Input. These pin(s) supply power to

thedevice.TheLT3060requiresalocalINbypasscapacitor

if it is located more than six inches from the main input

filter capacitor. In general, battery output impedance rises

with frequency, so adding a bypass capacitor in battery-

powered circuits is advisable.

noise to 30µV

in a 10Hz to 100kHz bandwidth. Soft-

RMS

starttimeisdirectlyproportionaltotheREF/BYPcapacitor

value. If the LT3060 is placed in shutdown, REF/BYP is

actively pulled low by an internal device to reset soft-start.

If low noise or soft-start performance is not required, this

pin must be left floating (unconnected). Do not drive this

pin with any active circuitry.

An input bypass capacitor in the range of 1µF to 10µF

suffices. The LT3060 withstands reverse voltages on the

IN pin with respect to its GND and OUT pins. In a reversed

input situation, such as a battery plugged in backwards,

the LT3060 behaves as if a large resistor is in series with

its input. Limited reverse current flows into the LT3060

and no reverse voltage appears at the load. The device

protects itself and the load.

ADJ (Pin 2/Pin 7): Adjust. This pin is the error amplifier’s

invertingterminal.It’stypicalbiascurrentof15nAflowsout

ofthepin(seecurveofADJPinBiasCurrentvsTemperature

in the Typical Performance Characteristics section). The

ADJ pin voltage is 600mV referenced to GND.

SHDN (Pin 7/Pin 1): Shutdown. Pulling the SHDN pin

low puts the LT3060 into a low power state and turns

the output off. Drive the SHDN pin with either logic or an

open collector/drain with a pull-up resistor. The resistor

supplies the pull-up current to the open collector/drain

logic, normally several microamperes, and the SHDN

pin current, typically less than 3µA. If unused, connect

the SHDN pin to IN. The LT3060 does not function if the

SHDN pin is not connected. The SHDN pin cannot be

driven below GND unless tied to the IN pin. If the SHDN

pin is driven below GND while IN is powered, the output

may turn on. SHDN pin logic cannot be referenced to a

negative supply voltage.

Connecting a capacitor from ADJ to OUT reduces output

noiseandimprovestransientresponseforoutputvoltages

greaterthan600mV.SeetheApplicationsInformationsec-

tion for calculating the value of the feedforward capacitor.

For fixed voltage versions of the LT3060, if low noise and

fast transient response is not required, this pin must be

left floating (unconnected).

OUT(Pins3,4/Pin6):Output.Thesepin(s)supplypowerto

theload. Stabilityrequirementsdemandaminimum2.2µF

ceramic output capacitor to prevent oscillations. Large

load transient applications require larger output capaci-

tors to limit peak voltage transients. See the Applications

Information section for details on transient response and

reverseoutputcharacteristics. Permissibleoutputvoltage

range is 600mV to 44.5V.

GND (Pin 8, Exposed Pad Pin 9/Pins 2, 3, 4): Ground.

For the adjustable LT3060, connect the bottom of the ex-

ternal resistor divider that sets the output voltage directly

to GND for optimum regulation. For the DFN package, tie

exposed pad Pin 9 directly to Pin 8 and the PCB ground.

Thisexposedpadprovidesenhancedthermalperformance

with its connection to the PCB ground. See the Applica-

tions Information section for thermal considerations and

calculating junction temperature.

3060fa

15

LT3060 Series

applicaTions inForMaTion

The LT3060 series are micropower, low noise, low drop-

out voltage, 100mA linear regulators with shutdown. The

devices supply up to 100mA at a typical dropout voltage

of 300mV and operate over a 1.6V to 45V input range.

Adjustable Operation

The LT3060 adjustable version has an output voltage

range of 0.6V to 44.5V. The output voltage is set by the

ratio of two external resistors, as shown in Figure 1.

The device servos the output to maintain the ADJ pin

voltage at 0.6V referenced to ground. The current in

R1 is then equal to 0.6V/R1, and the current in R2

is the current in R1 minus the ADJ pin bias current.

The ADJ pin bias current, 15nA at 25°C, flows from the

ADJ pin through R1 to GND. Calculate the output voltage

usingtheformulainFigure1. ThevalueofR1shouldbeno

greater than 124k to provide a minimum 5µA load current

so that errors in the output voltage, caused by the ADJ pin

bias current, are minimized. Note that in shutdown, the

output is turned off and the divider current is zero. Curves

of ADJ Pin Voltage vs Temperature and ADJ Pin Bias Cur-

rent vs Temperature appear in the Typical Performance

Characteristics section.

A single external capacitor provides programmable low

noise reference performance and output soft-start func-

tionality. For example, connecting a 10nF capacitor from

the REF/BYP pin to GND lowers output noise to 30µV

RMS

over a 10Hz to 100kHz bandwidth. This capacitor also

soft-starts the reference and prevents output voltage

overshoot at turn-on.

The LT3060’s quiescent current is merely 40μA for the

adjustableversionand45µAforthefixedvoltageversions,

while providing fast transient response with a minimum

low ESR 2.2μF ceramic output capacitor. In shutdown,

quiescent current is less than 1μA and the reference soft-

start capacitor is reset.

The LT3060 regulators optimize stability and transient

response with low ESR, ceramic output capacitors. The

regulators do not require the addition of ESR as is com-

mon with other regulators. The LT3060 adjustable version

typically provides 0.1% line regulation and 0.03% load

regulation. For fixed voltage versions, load regulation is

slightly increased due to 20mΩ of typical resistance in

series with the output. Curves of load regulation appear

in the Typical Performance Characteristics section.

The adjustable device is tested and specified with the ADJ

pintiedtotheOUTpin,yieldingV

=0.6V.Specifications

OUT

for output voltages greater than 0.6V are proportional to

the ratio of the desired output voltage to 0.6V:V /0.6V.

OUT

For example, load regulation for an output current change

of 1mA to 100mA is 0.2mV (typical) at V

OUT

= 0.6V. At

OUT

V

= 12V, load regulation is:

12V

0.6V

• (0.2mV) = 4mV

Internal protection circuitry includes reverse-battery pro-

tection,reverse-outputprotection,reverse-currentprotec-

tion, current limit with foldback and thermal shutdown.

IN

OUT

ADJ

V

OUT

V

IN

LT3060

R2

R1

This “bullet-proof” protection set makes it ideal for use in

battery-powered systems. In battery backup applications

where the output is held up by a backup battery and the

input is pulled to ground, the LT3060 acts like it has a

diodeinserieswithitsoutputandpreventsreversecurrent

flow. Additionally, in dual supply applications where the

regulator load is returned to a negative supply, the output

can be pulled below ground by as much as 45V and the

device still starts normally and operates.

R2

R1

SHDN

V_OUT= 0.6V 1+

V_ADJ= 0.6V

– I

(

• R2

ADJ

)

GND REF/BYP

I_ADJ= 15nA at 25ºC

OUTPUT RANGE = 0.6V to 44.5V

3060 F01

Figure 1. Adjustable Operation

3060fa

16

LT3060 Series

applicaTions inForMaTion

Table 1 shows 1% resistor divider values for some com-

mon output voltages with a resistor divider current of

about 5µA.

To lower the output voltage noise for higher output volt-

ages, include a feedforward capacitor (C ) from V

FF

OUT

to the ADJ pin. A good quality, low leakage capacitor is

recommended.Thiscapacitorbypassestheerroramplifier

oftheregulator,providingalowfrequencynoisepole.With

Table 1. Output Voltage Resistor Divider Values

V

R1

R2

OUT

the use of 10nF for both C and C

, output voltage

FF

REF/BYP

when the output voltage is

(V)

1.2

1.5

1.8

2.5

3

(kΩ)

noise decreases to 30µV

RMS

118

121

124

115

124

115

118

182

249

365

499

562

845

set to 5V by a 5µA feedback resistor divider. If the current

in the feedback resistor divider is doubled, C must also

FF

be doubled to achieve equivalent noise performance.

Higher values of output voltage noise are often measured

if care is not exercised with regard to circuit layout and

testing. Crosstalk from nearby traces induces unwanted

noiseontotheLT3060’soutput. Powersupplyripplerejec-

tion must also be considered. The LT3060 regulators do

not have unlimited power supply rejection and will pass a

small portion of the input noise through to the output.

3.3

5

Bypass Capacitance, Output Voltage Noise and

Transient Response

The LT3060 regulators provide low output voltage noise

over the 10Hz to 100kHz bandwidth while operating at

full load with the addition of a reference bypass capacitor

Using a feedforward capacitor (C ) from V

to the ADJ

FF

OUT

pin has the added benefit of improving transient response

foroutputvoltagesgreaterthan0.6V. Withnofeedforward

capacitor, the settling time will increase as the output

voltage is raised above 0.6V. Use the equation in Figure 2

(C ) from the REF/BYP pin to GND. A good quality,

REF/BYP

low leakage capacitor is recommended. This capacitor

bypasses the internal reference of the regulator, provid-

ing a low frequency noise pole. With the use of 10nF for

to determine the minimum value of C to achieve a

FF

C

the output voltage noise decreases to as low as

whentheoutputvoltageissetfor0.6V.Forhigher

transient response that is similar to 0.6V output voltage

performance regardless of the chosen output voltage

(see Figure 3 and Transient Response in the Typical Perf-

ormance Characteristics section).

REF/BYP,

30µV

RMS

output voltages (generated by using a feedback resistor

divider), the output voltage noise gains up accordingly

when using C

by itself.

REF/BYP

V

C

= 5V

OUT

= 10µF

I

= 5µA

FB-DIVIDER

0

IN

OUT

V

OUT

C

OUT

R2

R1

V

IN

FF

LT3060

100pF

1nF

SHDN

ADJ

GND REF/BYP

10nF

4.7nF

5µA

C_FF

≥

• I

(

)

FB−DIVIDER

C

LOAD CURRENT

100mA/DIV

REF/BYP

V_OUT

I_FB−DIVIDER

=

3060 F03

3060 F02

R1+R2

100µs/DIV

Figure 2. Feedforward Capacitor for Fast Transient Response

Figure 3. Transient Response vs Feedforward Capacitor

3060fa

17

LT3060 Series

applicaTions inForMaTion

During start-up, the internal reference soft-starts if a

reference bypass capacitor is present. Regulator start-

up time is directly proportional to the size of the bypass

capacitor, slowing to 6ms with a 10nF bypass capacitor

(See Start-up Time vs REF/BYP Capacitor in the Typical

Performance Characteristics section). The reference by-

pass capacitor is actively pulled low during shutdown to

reset the internal reference.

changes. Bypass capacitors, used to decouple individual

components powered by the LT3060, increase the effec-

tive output capacitor value. For applications with large

load current transients, a low ESR ceramic capacitor in

parallel with a bulk tantalum capacitor often provides an

optimally damped response.

Giveextraconsiderationtotheuseofceramiccapacitors.

Manufacturers make ceramic capacitors with a variety of

dielectrics, each with different behavior across tempera-

ture and applied voltage. The most common dielectrics

are specified with EIA temperature characteristic codes

of Z5U, Y5V, X5R and X7R. The Z5U and Y5V dielectrics

provide high C-V products in a small package at low cost,

butexhibitstrongvoltageandtemperaturecoefficients,as

shown in Figures 4 and 5. When used with a 5V regulator,

a 16V 10µF Y5V capacitor can exhibit an effective value

as low as 1µF to 2µF for the DC bias voltage applied, and

over the operating temperature range. The X5R and X7R

dielectrics yield much more stable characteristics and

are more suitable for use as the output capacitor.

Start-up time is also affected by the use of a feedforward

capacitor. Start-uptimeisdirectlyproportionaltothesize

of the feedforward capacitor and output voltage, and is

inversely proportional to the feedback resistor divider

current, slowing to 15ms with a 4.7nF feedforward ca-

pacitor and a 10µF output capacitor for an output voltage

set to 5V by a 5µA feedback resistor divider.

Output Capacitance

The LT3060 regulators are stable with a wide range of

output capacitors. The ESR of the output capacitor af-

fects stability, most notably with small capacitors. Use

a minimum output capacitor of 2.2µF with an ESR of 3Ω

or less to prevent oscillations. If a feedforward capacitor

is used with output voltages set for greater than 24V, use

a minimum output capacitor of 4.7µF. The LT3060 is a

micropower device and output load transient response is

a function of output capacitance. Larger values of output

capacitance decrease the peak deviations and provide

improved transient response for larger load current

The X7R type works over a wider temperature range

and has better temperature stability, while the X5R is

less expensive and is available in higher values. Care

still must be exercised when using X5R and X7R ca-

pacitors; the X5R and X7R codes only specify operating

temperature range and maximum capacitance change

over temperature. Capacitance change due to DC bias

with X5R and X7R capacitors is better than Y5V and Z5U

40

20

BOTH CAPACITORS ARE 16V,

1210 CASE SIZE, 10µF

0

X5R

0

–20

–40

Y5V

–60

Y5V

–80

BOTH CAPACITORS ARE 16V,

1210 CASE SIZE, 10µF

–100

–50 –25

0

25

50

TEMPERATURE (°C)

75

100 125

0

8

12 14

2

4

6

10

16

DC BIAS VOLTAGE (V)

3060 F04

3060 F05

Figure 4. Ceramic Capacitor DC Bias Characteristics

Figure 5. Ceramic Capacitor Temperature Characteristics

3060fa

18

LT3060 Series

applicaTions inForMaTion

capacitors, but can still be significant enough to drop

capacitor values below appropriate levels. Capacitor DC

bias characteristics tend to improve as component case

size increases, but expected capacitance at operating

voltage should be verified.

allowing the regulator to supply large output currents.

Withahighinputvoltage,aproblemcanoccurwhereinthe

removal of an output short will not allow the output to re-

cover.Otherregulators,suchastheLT1083/LT1084/LT1085

family and LT1764A also exhibit this phenomenon, so it is

notuniquetotheLT3060.Theproblemoccurswithaheavy

output load when the input voltage is high and the output

voltage is low. Common situations are: (1) immediately

after the removal of a short-circuit or (2) if the shutdown

pin is pulled high after the input voltage is already turned

on. The load line intersects the output current curve at two

points creating two stable output operating points for the

regulator. With this double intersection, the input power

supply needs to be cycled down to zero and brought up

again for the output to recover.

Voltage and temperature coefficients are not the only

sources of problems. Some ceramic capacitors have a

piezoelectric response. A piezoelectric device generates

voltage across its terminals due to mechanical stress,

similar to the way a piezoelectric accelerometer or mi-

crophone works. For a ceramic capacitor, the stress is

inducedbyvibrationsinthesystemorthermaltransients.

The resulting voltages produced cause appreciable

amountsofnoise. Aceramiccapacitorproducedthetrace

in Figure 6 in response to light tapping from a pencil.

Similar vibration induced behavior can masquerade as

increased output voltage noise.

Thermal Considerations

The power handling capability of the device will be limited

by the maximum rated junction temperature (125°C for

LT3060E, LT3060I, LT3060MP or 150°C for LT3060H).

Two components comprise the power dissipated by the

device:

V

C

= 0.6V

= 10µF

OUT

= 10nF

REF/BYP

I

= 100mA

LOAD

V

OUT

500µV/DIV

1. Output current multiplied by the input/output voltage

differential: I

• (V –V ), and

OUT

IN OUT

2. GND pin current multiplied by the input voltage:

• V

3060 F06

I

GND

IN

4ms/DIV

GND pin current is determined using the GND Pin Current

curvesintheTypicalPerformanceCharacteristicssection.

Power dissipation equals the sum of the two components

listed above.

Figure 6. Noise Resulting from Tapping on a Ceramic Capacitor

Overload Recovery

The LT3060 regulators have internal thermal limiting that

protectsthedeviceduringoverloadconditions.Forcontinu-

ousnormalconditions,themaximumjunctiontemperature

of125°C(E-grade,I-grade,MP-grade)or150°C(H-grade)

must not be exceeded. Carefully consider all sources of

thermal resistance from junction-to-ambient including

other heat sources mounted in proximity to the LT3060.

Like many IC power regulators, the LT3060 has safe

operating area protection. The safe operating area protec-

tion decreases current limit as input-to-output voltage

increases, and keeps the power transistor inside a safe

operating region for all values of input-to-output voltage.

The LT3060 provides some output current at all values of

input-to-outputvoltageuptothespecified45Voperational

maximum.

The underside of the LT3060 DFN package has exposed

2

metal (1mm ) from the lead frame to the die attachment.

Whenpowerisfirstapplied, theinputvoltagerisesandthe

output follows the input; allowing the regulator to start-up

intoveryheavyloads. Duringstart-up, astheinputvoltage

is rising, the input-to-output voltage differential is small,

The package allows heat to directly transfer from the die

junction to the printed circuit board metal to control maxi-

mum operating junction temperature. The dual-in-line pin

3060fa

19

LT3060 Series

applicaTions inForMaTion

arrangement allows metal to extend beyond the ends of

the package on the topside (component side) of a PCB.

Connect this metal to GND on the PCB. The multiple IN

and OUT pins of the LT3060 also assist in spreading heat

to the PCB.

Calculating Junction Temperature

Example: Given an output voltage of 2.5V, an input volt-

age range of 12V 5%, an output current range of 0mA

to 50mA and a maximum ambient temperature of 85°C,

what will the maximum junction temperature be?

For surface mount devices, heat sinking is accomplished

by using the heat spreading capabilities of the PC board

and its copper traces. Copper board stiffeners and plated

through-holes also can spread the heat generated by

power devices.

The power dissipated by the device equals:

I

• (V

–V ) + I

• V

OUT(MAX)

IN(MAX) OUT

GND IN(MAX)

where,

I

= 50mA

= 12.6V

OUT(MAX)

Tables 2 and 3 list thermal resistance for several different

boardsizesandcopperareas.Allmeasurementsweretaken

in still air on a 4 layer FR-4 board with 1oz solid internal

planesand2oztop/bottomexternaltraceplaneswithatotal

boardthicknessof1.6mm.Thefourlayerswereelectrically

isolated with no thermal vias present. PCB layers, copper

weight, board layout and thermal vias will affect the resul-

tant thermal resistance. For more information on thermal

resistance and high thermal conductivity test boards,

refer to JEDEC standard JESD51, notably JESD51-12 and

JESD51-7. Achieving low thermal resistance necessitates

attention to detail and careful PCB layout.

V

IN(MAX)

I

at (I = 50mA, V = 12.6V) = 0.6mA

OUT IN

GND

So,

P = 50mA • (12.6V – 2.5V) + 0.6mA • 12.6V = 0.513W

Using a DFN package, the thermal resistance ranges from

48°C/W to 60°C/W depending on the copper area with

no thermal vias. So the junction temperature rise above

ambient approximately equals:

0.513W • 54°C/W = 27.8°C

The maximum junction temperature equals the maximum

ambient temperature plus the maximum junction tem-

perature rise above ambient or:

Table 2. DC Package, 8-Lead DFN

COPPER AREA

BOARD AREA

THERMAL RESISTANCE

TOPSIDE* BACKSIDE

2

(mm )

(JUNCTION-TO-AMBIENT)

(mm )

T

JMAX

= 85°C + 27.8°C = 112.8°C

2500

1000

225

100

50

2500

48°C/W

49°C/W

50°C/W

54°C/W

60°C/W

Protection Features

The LT3060 regulators incorporate several protection

features that make it ideal for use in battery-powered

circuits. In addition to the normal protection features

associated with monolithic regulators, such as current

limiting and thermal limiting, the device also protects

against reverse-input voltages, reverse-output voltages

and reverse output-to-input voltages.

*Device is mounted on topside

Table 3. TS8 Package, 8 Lead TSOT-23

COPPER AREA

BOARD AREA

THERMAL RESISTANCE

(JUNCTION-TO-AMBIENT)

TOPSIDE* BACKSIDE

2

(mm )

Current limit protection and thermal overload protection

protect the device against current overload conditions at

the output of the device. The typical thermal shutdown

temperature is 165°C. For normal operation, do not ex-

ceed a junction temperature of 125°C (LT3060E, LT3060I,

LT3060MP) or 150°C (LT3060H).

2500

1000

225

100

50

2500

57°C/W

58°C/W

59°C/W

63°C/W

67°C/W

*Device is mounted on topside

3060fa

20

LT3060 Series

applicaTions inForMaTion

The LT3060 IN pin withstands reverse voltages up to 50V.

The device limits current flow to less than 300µA (typi-

cally less than 50µA) and no negative voltage appears at

OUT. The device protects both itself and the load against

batteries that are plugged in backwards.

The LT3060 incurs no damage if the ADJ pin is pulled

above or below ground by less than 50V. For the adjust-

able version, if the input is left open-circuit or grounded,

the ADJ pin performs like a large resistor (typically 30k)

in series with a diode when pulled below ground, and

like 30k in series with two diodes when pulled above

ground.

The SHDN pin cannot be driven below GND unless tied to

the IN pin. If the SHDN pin is driven below GND while IN is

powered, the output may turn on. SHDN pin logic cannot

be referenced to a negative supply voltage.

In circuits where a backup battery is required, several

different input/output conditions can occur. The output

voltage may be held up while the input is either pulled to

ground, pulled to some intermediate voltage or left open-

circuit. Current flow back into the output follows the curve

shown in Figures 7 and 8.

The LT3060 incurs no damage if its output is pulled be-

low ground. If the input is left open-circuit or grounded,

the output can be pulled below ground by 50V. No cur-

rent flows through the pass transistor from the output.

However, current flows in (but is limited by) the resistor

divider that sets the output voltage. Current flows from

the bottom resistor in the divider and from the ADJ pin’s

internal clamp through the top resistor in the divider to

the external circuitry pulling OUT below ground. If the

input is powered by a voltage source, the output sources

current equal to its current limit capability and the LT3060

protects itself by thermal limiting. In this case, grounding

the SHDN pin turns off the device and stops the output

from sourcing current.

If the LT3060’s IN pin is forced below the OUT pin or the

OUT pin is pulled above the IN pin, input current typically

drops to less than 1µA. This occurs if the LT3060 input

is connected to a discharged (low voltage) battery and

either a backup battery or a second regulator holds up

the output. The state of the SHDN pin has no effect on the

reverse current if the output is pulled above the input.

2.0

350

T = 25°C

J

IN

T = 25°C

IN

J

V

LT3060-1.2

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

V

= 0V

300

250

200

150

100

50

CURRENT FLOWS

INTO OUT PIN

LT3060-1.5

LT3060-1.8

V

= V

OUT

ADJ

LT3060-2.5

LT3060-3.3

ADJ

LT3060-5

OUT

0

5

10 15 20 25 30 35 40 45

OUTPUT VOLTAGE (V)

0

5

10 15 20 25 30 35 40 45

OUTPUT VOLTAGE (V)

3060 F08w

3060 F07

Figure 7. LT3060 Reverse Output Current

Figure 8. LT3060-1.2/-1.5/-1.8/-2.5/-3.3/-5

Reverse Output Current

3060fa

21

LT3060 Series

Typical applicaTion

Paralleling of Regulators for Higher Output Current

R1

0.15Ω

2.5V

200mA

IN

OUT

ADJ

R8

1.91k

1%

+

C2

LT3060

C1

2.2µF

V

IN

> 2.9V

4.7µF

SHDN

R9

604Ω

1%

GND REF/BYP

C3

1nF

R2

0.15Ω

IN

OUT

LT3060

SHDN

GND REF/BYP

R6

1.74k

1%

SHDN

ADJ

R7

604Ω

1%

C4

1nF

R3

200Ω

R4

200Ω

R5

1k

7

3

+

–

6

LT1637

4

2

C5

10nF

3060 TA03

3060fa

22

LT3060 Series

package DescripTion

DC Package

8-Lead Plastic DFN (2mm × 2mm)

(Reference LTC DWG # 05-08-1719 Rev A)

0.70 ±0.05

2.55 ±0.05

0.64 ±0.05

1.15 ±0.05

(2 SIDES)

PACKAGE

OUTLINE

0.25 ± 0.05

0.45 BSC

1.37 ±0.05

(2 SIDES)

RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS

APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED

R = 0.115

TYP

5

8

R = 0.05

TYP

0.40 ± 0.10

2.00 ±0.10 0.64 ± 0.10

(4 SIDES)

(2 SIDES)

PIN 1 NOTCH

R = 0.20 OR

0.25 × 45°

CHAMFER

PIN 1 BAR

TOP MARK

(SEE NOTE 6)

(DC8) DFN 0409 REVA

4

1

0.23 ± 0.05

0.45 BSC

0.75 ±0.05

0.200 REF

1.37 ±0.10

(2 SIDES)

BOTTOM VIEW—EXPOSED PAD

0.00 – 0.05

NOTE:

1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE

2. DRAWING NOT TO SCALE

3. ALL DIMENSIONS ARE IN MILLIMETERS

4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE

MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE

5. EXPOSED PAD SHALL BE SOLDER PLATED

6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE

TOP AND BOTTOM OF PACKAGE

3060fa

23

LT3060 Series

package DescripTion

TS8 Package

8-Lead Plastic TSOT-23

(Reference LTC DWG # 05-08-1637)

2.90 BSC

(NOTE 4)

0.52

MAX

0.65

REF

1.22 REF

1.50 – 1.75

(NOTE 4)

2.80 BSC

1.4 MIN

3.85 MAX 2.62 REF

PIN ONE ID

RECOMMENDED SOLDER PAD LAYOUT

PER IPC CALCULATOR

0.22 – 0.36

8 PLCS (NOTE 3)

0.65 BSC

0.80 – 0.90

0.20 BSC

DATUM ‘A’

0.01 – 0.10

1.00 MAX

0.30 – 0.50 REF

1.95 BSC

0.09 – 0.20

(NOTE 3)

TS8 TSOT-23 0802

NOTE:

1. DIMENSIONS ARE IN MILLIMETERS

2. DRAWING NOT TO SCALE

3. DIMENSIONS ARE INCLUSIVE OF PLATING

4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR

5. MOLD FLASH SHALL NOT EXCEED 0.254mm

6. JEDEC PACKAGE REFERENCE IS MO-193

3060fa

24

LT3060 Series

revision hisTory

REV

DATE

DESCRIPTION

PAGE NUMBER

A

07/10 Added fixed voltage options for 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V

1-26

3060fa

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

25

LT3060 Series

Typical applicaTion

12V Low Noise Regulator

V

C

= 13V

= 0

IN

FF

V

OUT

12V AT 100mA

30µV NOISE

IN

OUT

ADJ

RMS

V

IN

2.37M

1%

C

FF

10nF

LT3060

SHDN

1µF

10µF

13V TO

45V

124k

1%

C

= 10nF

FF

GND REF/BYP

10nF

∆I = 10mA TO 100mA

L

LOAD

CURRENT

100mA/DIV

3060 TA04

0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

TIME (ms)

3060 TA04b

relaTeD parTs

PART

DESCRIPTION

NUMBER

COMMENTS

LT1761

LT1762

LT1763

LT1764/

100mA, Low Noise LDO

150mA, Low Noise LDO

500mA, Low Noise LDO

3A, Fast Transient Response,

300mV Dropout Voltage, Low Noise: 20µV

340mV Dropout Voltage, Low Noise: 40µV

, V = 1.8V to 20V, ThinSOT Package

RMS IN

, V = 1.8V to 20V, MS8 Package

RMS IN

, V = 1.8V to 20V, SO8 Package

RMS IN

, V = 2.7V to 20V, TO-220 and DD Packages,

RMS IN

LT1764A Low Noise LDO

LT1764A Version Stable Also with Ceramic Capacitors

LT1962

LT1963/

300mA, Low Noise LDO

1.5A Low Noise, Fast Transient

270mV Dropout Voltage, Low Noise: 20µV

, V = 1.8V to 20V, MS8 Package

RMS IN

340mV Dropout Voltage, Low Noise: 40µV

, V = 2.5V to 20V, LT1963A Version Stable with

RMS IN

LT1963A Response LDO

Ceramic Capacitors; TO-220, DD, SOT-223 and SO8 Packages

LT1964

LT1965

200mA, Low Noise, Negative LDO

340mV Dropout Voltage, Low Noise 30µV , V = –1.8V to –20V, ThinSOT Package

RMS IN

1.1A, Low Noise, Low Dropout Linear

Regulator

290mV Dropout Voltage, Low Noise: 40µV , V : 1.8V to 20V, V : 1.2V to 19.5V, Stable with

RMS IN OUT

Ceramic Capacitors; TO-220, DD-Pak, MSOP and 3mm × 3mm DFN Packages

LT3008

20mA, 45V, 3µA I Micropower LDO

Q

300mV Dropout Voltage, Low I : 3µA, V = 2V to 45V, V = 0.6V to 39.5V; ThinSOT and

Q

IN

OUT

2mm × 2mm DFN-6 Packages

LT3009

LT3050

20mA, 3µA I Micropower LDO

Q

280mV Dropout Voltage, Low I : 3µA, V = 1.6V to 20V, ThinSOT and SC70 Packages

Q

IN

100mA, Low Noise Linear Regulator with 340mV Dropout Voltage, Low Noise: 30µV

Precision Current Limit and Diagnostic

Functions.

, V : 1.6V to 45V, V : 0.6V to 44.5V, Program-

OUT

RMS IN

mable Precision Current Limit: 5%, Programmable Minimum I

Monitor, Output Current

OUT

Monitor, Fault Indicator, Reverse Protection; 12-Lead 2mm × 3mm DFN and MSOP Packages.

LT3080/

1.1A, Parallelable, Low Noise,

300mV Dropout Voltage (2-Supply Operation), Low Noise: 40µV , V : 1.2V to 36V,

RMS IN

LT3080-1 Low Dropout Linear Regulator

V

: 0V to 35.7V, Current-Based Reference with 1-Resistor V

Set; Directly Parallelable (No Op

OUT

Amp Required), Stable with Ceramic Capacitors; TO-220, SOT-223, MSOP and 3mm × 3mm DFN

Packages; LT3080-1 Version Has Integrated Internal Ballast Resistor

LT3082

200mA, Parallelable, Single Resistor,

Low Dropout Linear Regulator

Outputs May Be Paralleled for Higher Output, Current or Heat Spreading, Wide Input Voltage

Range: 1.2V to 40V Low Value Input/Output Capacitors Required: 0.22μF, Single Resistor Sets

Output Voltage Initial Set Pin Current Accuracy: 1%, Low Output Noise: 40μV

(10Hz to 100kHz)

RMS

Reverse-Battery Protection, Reverse-Current Protection; 8-Lead SOT-23, 3-Lead SOT-223 and

8-Lead 3mm × 3mm DFN Packages

LT3085

LT3092

500mA, Parallelable, Low Noise,

Low Dropout Linear Regulator

275mV Dropout Voltage (2-Supply Operation), Low Noise: 40µV

, V : 1.2V to 36V,

RMS IN

V

: 0V to 35.7V, Current-Based Reference with 1-Resistor V

Set, Directly Parallelable

OUT

(No Op Amp Required), Stable with Ceramic Capacitors; MS8E and 2mm × 3mm DFN-6 Packages

200mA 2-Terminal Programmable

Current Source

Programmable 2-Terminal Current Source, Maximum Output Current: 200mA Wide Input Voltage

Range: 1.2V to 40V, Resistor Ratio Sets Output Current Initial Set Pin Current Accuracy: 1%,

Current Limit and Thermal Shutdown Protection Reverse-Voltage Protection, Reverse-Current

Protection; 8-Lead SOT-23, 3-Lead SOT-223 and 8-Lead 3mm × 3mm DFN Packages

3060fa

LT REV A 0710 • PRINTED IN USA

LinearTechnology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

26

●

 LINEAR TECHNOLOGY CORPORATION 2010

(408) 432-1900 FAX: (408) 434-0507 www.linear.com


型号：	LT3060EDC-2.5#TRPBF
厂家：	Linear
描述：	LT3060 - 45V VIN, Micropower, Low Noise, 100mA Low Dropout, Linear Regulator; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C 稳压器
文件：	总26页 (文件大小：373K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LT3060EDC-2.5#TRPBF [Linear]

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