TPS60240DGKR_技术文档

TPS60240, TPS60241

TPS60242, TPS60243

Actual Size

(3,05 mm x 4,98 mm)

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

170-µVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST

CONVERTER FOR VCO SUPPLY

D

Digital Cameras

MP3 Players

FEATURES

D

Wide Input Voltage Range:

– 1.8 V To 5.5 V for 2.7-V, 3-V, 3.3-V Output

(TPS60240/2/3)

SIM Modules

Electronic Games

Memory Backup

Handheld Meters

Bias Supplies

– 2.7 V To 5.5 V for 5-V Output (TPS60241)

D

170-µVrms Zero Ripple Output:

– at 20 Hz to 10 MHz Bandwidth

Minimum Number of External Components

– No Inductors

– Only Small Ceramic Chip Capacitors

DESCRIPTION

The TPS6024x is a switched capacitor voltage

converter, ideally suited for VCO and PLL applications

that require low noise and tight tolerances. Its dual-cap

design uses four ceramic capacitors to provide ultralow

output ripple yet high efficiency, while eliminating the

need for inefficient linear regulators.

D

Up to 90% Efficiency

Regulated 3.3-V (TPS60240), 5-V (TPS60241),

3-V (TPS60243), and 2.7-V (TPS60242) Output

Voltage With ±2.5% Accuracy Over Load

D

Up to 25-mA Output Current

Shutdown Mode: 0.1 µA Typical

Thermal Protection and Current Limit

Microsmall 8-Pin MSOP Package

EVM Available TPS60241EVM-194

A wide input supply voltage range of 2.7 V to 5.5 V

makes the TPS6024x ideal for lithium-based battery

applications. The TPS60240/2/3 operates down to

1.8 V, supporting a 3.3-V, 2.7-V, 3-V output from

two-cell, nickel- or alkaline-based chemistries. The

devices work equally well for low EMI dc/dc step-up

conversion without the need for an inductor. The high

switching frequency (typical 160 kHz) promotes the use

of small surface-mount capacitors, saving board space.

The converter’s shutdown mode conserves battery

energy.

APPLICATIONS

D

VCO and PLL Power for:

– PDA Phones

– Cellular Phones

– PCMCIA Modems

D

Smartcard Readers

typical application circuit

5 V

V

C

V

3.3 V

IN

OUT

CC

TPS60241

C

1+

1–

2+

2–

C

O

1 µF

C

1 µF

C

1 µF

C

2

1 µF

I

1

VCO

C

GND

EN

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

1

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

description(continued)

The devices are thermally protected and current-limited for reliable operation even under persisting fault

conditions. Normalquiescentcurrent(groundpincurrent)isonly250µA, andtypically0.1µAinshutdownmode.

The TPS6024x devices come in a thin, 8-pin MSOP (DGK) package with a component height of only 1,1 mm.

DGK PACKAGE

(TOP VIEW)

C

V

8

7

6

5

1

2

3

4

2+

1+

OUT

EN

C

IN

2–

C

GND

1–

AVAILABLE OPTIONS

PACKAGE

MARKING

OUTPUT VOLTAGE

(V)

†

T

A

PART NUMBER

PACKAGE

–40°C to 85°C

TPS60241DGKR

TPS60240DGKR

TPS60242DGKR

TPS60243DGKR

AUB

ATM

AYF

AYG

DGK (8-pin MSOP)

5 V

3.3 V

2.7 V

3 V

–40°C to 85°C

†

This package type is available taped and reeled only. Quantity is 2500 units per reel (e.g., TPS60241DGKR).

The devices are also available on mini reel with 250 units per reel. To order this packaging option, replace the

R with a T in the part number (e.g., TPS60261DGKT).

2

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

functional block diagram

V

IN

C

1+

C

1

C

1–

Charge Pump 1

Charge Pump 2

0°

Oscillator

C

2+

180°

C

2

2–

Control

Circuit With

Thermal and

Overload

V

OUT

EN

Protection

+

_

Reference

GND

Terminal Functions

TERMINAL

NAME NO.

I/O

DESCRIPTION

C

7

5

8

3

2

4

6

Positive terminal of the flying capacitor C

1

1+

1–

2+

2–

C

Negative terminal of the flying capacitor C

1

Positive terminal of the flying capacitor C

2

Negative terminal of the flying capacitor C

Enable terminal, active high

Ground

2

EN

I

GND

V

IN

I

Supply voltage input TPS60241: 2.7 V to 5.5 V, TPS60240/2/3: 1.8 V to 5.5 V. Bypass V to GND with a 1-µF external

capacitor (C ).

I

IN

V

OUT

1

O

Regulated power output. Bypass V

output, TPS60240: regulated 3.3-V output, TPS60242: regulated 2.7-V output, TPS60243: regulated 3-V output

to GND with a 1-µF external filter capacitor (C ). TPS60241: regulated 5-V

OUT

O

3

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

detailed description

operating principle

The TPS6024x charge pump is a fixed-frequency, dual-phase charge pump that provides 25 mA of continuous

supply current for low-noise applications such as VCOs used in cell phones and wireless appliances.

Low-noise operation results from using a proprietary dual-phase charge pump topology that relies on an

operational amplifier in the feedback loop to reduce ripple. During the first phase, C is charged to the supply

1

voltage. Terminal C is connected to V , and C isconnectedtoGND. Inthesecondphase, C isconnected

1+

IN

1–

1+

1–

to the output of the operational amplifier, and C is connected to V

. The operational amplifier then adjusts

OUT

its output until the output V

delivers the correct voltage to make the resistor divided feedback point equal

OUT

to the reference voltage. During this second phase, C is charged to supply voltage. Terminal C is connected

to GND, and C is connected to V . Phase one is then repeated with C , now acting to provide charge to the

2

2–

2+

IN

2

output in place of C , which is connected to the supply. The dual-phase operation lowers the output ripple

1

voltage significantly compared to a standard single-phase charge pump. In addition, the linear feedback of the

operational amplifier eliminates the ripple during discharge of the output capacitor (C ).

O

shutdown

Driving EN low disables the converter. This disables the internal circuits and reduces input current to typically

0.1 µA. In this mode, the load is disconnected from the supply voltage. The device exits shutdown once EN is

set to a high level.

start-up procedure

The converter is enabled when EN is set from logic low to high. The start-up time to reach 90% of the nominal

output voltage is typically 0.5 ms at load currents lower than 10 mA and with an output capacitor of 1 µF.

Increasing the values of C delays the start-up time.

O

†

absolute maximum ratings over operating free-air temperature (unless otherwise noted)

Supply voltage, V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V

DD

Power dissipation, P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited

Voltage EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 6 V

D

Voltage C , C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V or 5.5 V, whichever is lowest

2– 1–

2+ 1+

I

Voltage C , C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V , V or 5.5 V, whichever is lowest

I O,

Junction temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125°C

Storage temperature, T

Shortcircuit output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 mA maximum

J

stg

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

DISSIPATION RATING TABLE

T

≤ 25°C

DERATING FACTOR

T

= 70°C

T = 85°C

A

PACKAGE

POWER RATING

ABOVE T = 25°C

POWER RATING POWER RATING

A

DGK

376 mW

3.76 mW/°C

207 mW

150 mW

NOTE: The thermal resistance junction to ambient of the DGK package is R

= 150°C/W.

TH–JA

4

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

recommended operating conditions

MIN

1.8

NOM MAX

UNIT

TPS60240, TPS60242, TPS60243

TPS60241

5.5

V

I

Input voltage range

V

2.7

5.5

I

Output current range

Input capacitor

All devices

25

1

mA

µF

°C

O

C

I

C , C

Flying capacitors

1

2

C

Output capacitor

1

O

T

Operating temperature range

–40

85

A

electrical characteristics for TPS6024X at T = 25°C, C = C =1 µF, C = C = 1 µF (unless otherwise

A

I

O

1

2

noted), limits apply over the specified temperature range, –40°C to 85°C

PARAMETER

TPS60240 Assured start-up

TEST CONDITIONS

≤ 5 mA, R = 600 Ω

MIN

1.8

TYP

MAX

5.5

UNIT

I

O

I

O

I

O

I

O

L

TPS60241 Assured start-up

TPS60242 Assured start-up

TPS60243 Assured start-up

≤ 12 mA, R = 417 Ω

2.7

1.8

5.5

L

V

Input voltage

Output voltage

Output current

V

I

≤ 12 mA, R = 225 Ω

L

≤ 10 mA, R = 300 Ω

L

1.8 V ≤ V ≤ 5.5 V, 0 mA ≤ I ≤ 5 mA

I

O

TPS60240

TPS60241

TPS60242

3.2175

4.875

3.3 3.3825

2.4 V ≤ V ≤ 5.5 V, 0 mA ≤ I ≤ 25 mA

I

O

2.7 V ≤ V ≤ 5.5 V, 0 mA ≤ I ≤ 12 mA

I

O

5

5.125

3 V ≤ V ≤ 5.5 V, 0 mA ≤ I ≤ 25 mA

I

O

V

O

V

1.8 V ≤ V ≤ 5.5 V, 0 mA ≤ I ≤ 12 mA

I

O

2.6325

2.7 2.7675

2.3 V ≤ V ≤ 5.5 V, 0 mA ≤ I ≤ 25 mA

I

O

1.8 V ≤ V ≤ 5.5 V, 0 mA ≤ I ≤ 10 mA

I

O

TPS60243

Nominal

2.925

12

3

3.075

80

2.3 V ≤ V ≤ 5.5 V, 0 mA ≤ I ≤ 25 mA

I

O

2 V ≤ V ≤ 5.5 V

I

TPS60240/2/3

Short circuit

V = 2 V

I

f

mA

O

Nominal

2.7 V ≤ V ≤ 5.5 V

12

I

TPS60241

Short circuit

V = 3.25 V

I

80

Internal clock source

TPS60240/2/3

100

160

170

220

kHz

OSC

V < 2.5 V, I = 5 mA,

I

O

ESR < 0.1 Ω, measured over

20 Hz to 10 MHz, C = 4.7 µF

O

V

n

Output noise

voltage

µV RMS

V = 2.7 V, I = 5 mA,

I

O

TPS60241

ESR < 0.1 Ω, measured over

20 Hz to 10 MHz, C = 4.7 µF

170

O

V

EN

Logic high input voltage V

OH

1.3

5.5

0.4

V

I(H)

Logic low input voltage V

Logic high input current

Logic low input current

–0.2

I(L)

OL

I

100

nA

I(H)

I(L)

I

V

> 90% of V

O

(NOM)

t

EN

Start-up time

0.5

ms

(EN)

0.1 mA ≤ I ≤ 10 mA, C = 1 µF

O

TPS60240

TPS60241

TPS60242

TPS60243

I

O

I

O

I

O

I

O

= 5 mA, V = 1.8 V

89.6%

90.8%

73%

I

= 10 mA, V = 2.7 V

I

η

Efficiency

= 10 mA, V = 1.8 V

I

= 10 mA, V = 1.8 V

81%

I

5

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

electrical characteristics for TPS6024X at T = 25°C, C = C =1 µF, C = C = 1 µF (unless otherwise

A

I

O

1

2

noted), limits apply over the specified temperature range, –40°C to 85°C (continued)

PARAMETER

TEST CONDITIONS

= 0 mA, V = 3 V

MIN

TYP

250

MAX

325

UNIT

I

O

Quiescent

current

I

Q

µA

In shutdown mode

0.1

160

140

1

Temperature activated

Temperature deactivated

Thermal

shutdown

_

C

TYPICAL CHARACTERISTICS

Table of Graphs

FIGURE

1–4

5–8

9–12

13–16

17

vs Input voltage

Efficiency

vs Output current

vs Input voltage

vs Output current

vs Free-air temperature

vs Input voltage

V

Output voltage

Quiescent current

O

18

vs Free-air temperature

vs Output current

vs Input voltage

19

I

Shutdown current

20

L(sd)

V

n

Output noise voltage

Maximum output current

Load transient response

Start-up timing

21

22–25

26

27

Line transient response

Noise voltage spectrum

Output voltage ripple

28

29

vs Time

30

6

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

TYPICAL CHARACTERISTICS

TPS60240

EFFICIENCY

vs

TPS60241

EFFICIENCY

vs

INPUT VOLTAGE

100

90

100

90

I

O

= 10 mA

80

70

60

50

40

30

I

= 25 mA

70

O

I

O

= 10 mA

60

50

40

30

I

O

= 1 mA

I

O

= 1 mA

20

10

0

20

10

0

1.5

2

2.5

3

3.5

4

4.5

5

5.5

2.5

3

3.5

4

4.5

5

5.5

V – Input Voltage – V

I

V – Input Voltage – V

I

Figure 1

Figure 2

TPS60242

EFFICIENCY

vs

TPS60243

EFFICIENCY

vs

INPUT VOLTAGE

100

90

80

70

60

50

40

30

20

100

90

80

70

60

50

40

30

20

I

O

= 10 mA

I

O

= 10 mA

I

O

= 25 mA

I

= 25 mA

O

I

O

= 1 mA

I

O

= 1 mA

10

0

10

0

1.5

2

2.5

3

3.5

4

4.5

5

5.5

1.5

2

2.5

3

3.5

4

4.5

5

5.5

V – Input Voltage – V

I

V – Input Voltage – V

I

Figure 3

Figure 4

7

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

TYPICAL CHARACTERISTICS

TPS60241

EFFICIENCY

vs

TPS60240

EFFICIENCY

vs

OUTPUT CURRENT

100

90

100

T

= 25°C

V = 2.7 V

I

A

V = 1.8 V

I

90

80

70

60

50

40

30

20

10

0

V = 2 V

I

80

V = 3.3 V

I

70

V = 2.5 V

I

60

50

40

30

20

10

0

5

10

15

20

25

30

0

5

10

15

20

25

30

I

– Output Current – mA

O

I

O

– Output Current – mA

Figure 5

Figure 6

TPS60243

EFFICIENCY

vs

TPS60242

EFFICIENCY

vs

OUTPUT CURRENT

100

90

80

70

60

50

40

30

20

10

0

100

90

80

70

60

50

40

30

20

10

0

V = 1.8 V

I

V = 1.8 V

I

V = 2 V

I

V = 2 V

I

V = 2.5 V

I

V = 2.5 V

I

0

5

10

15

20

25

30

0

5

10

15

20

25

30

I

O

– Output Current – mA

I

O

– Output Current – mA

Figure 7

Figure 8

8

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

TYPICAL CHARACTERISTICS

TPS60240

OUTPUT VOLTAGE

vs

TPS60241

OUTPUT VOLTAGE

vs

INPUT VOLTAGE

3.31

3.305

3.3

5.010

5.005

I

= 0 mA

O

I

= 0 mA

O

5

4.995

4.990

I

= 10 mA

= 25 mA

O

I

= 10 mA

= 25 mA

O

3.295

O

3.29

4.985

4.980

3.285

3.28

1.5

2

2.5

3

3.5

4

4.5

5

5.5

2.5

3

3.5

4

4.5

5

5.5

6

V – Input Voltage – V

I

V – Input Voltage – V

I

Figure 9

Figure 10

TPS60243

OUTPUT VOLTAGE

vs

TPS60242

OUTPUT VOLTAGE

vs

INPUT VOLTAGE

3.01

3.005

3

2.71

2.705

2.7

I

= 0 mA

I

= 0 mA

O

I

= 10 mA

= 25 mA

I

= 10 mA

= 25 mA

O

2.995

2.99

2.695

2.69

O

2.985

2.98

2.685

2.68

1.5

2

2.5

3

3.5

4

4.5

5

5.5

1.5

2

2.5

3

3.5

4

4.5

5

5.5

V – Input Voltage – V

I

V – Input Voltage – V

I

Figure 11

Figure 12

9

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

TYPICAL CHARACTERISTICS

TPS60241

OUTPUT VOLTAGE

vs

TPS60240

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

5.02

3.40

3.35

3.30

3.25

T

A

= 25°C

5

4.98

4.96

4.94

4.92

4.9

V = 3.3 V

I

V = 2.5 V

I

V = 2.7 V

I

V = 2 V

I

V = 1.8 V

I

3.20

3.15

3.10

0

5

10

15

20

25

30

0

5

10

15

20

25

30

I

O

– Output Current – mA

I

O

– Output Current – mA

Figure 13

Figure 14

TPS60242

OUTPUT VOLTAGE

vs

TPS60243

OUTPUT VOLTAGE

vs

OUTPUT CURRENT

3.10

3.05

3

2.80

2.75

2.70

2.65

2.60

V = 2.5 V

I

V = 2 V

I

V = 2 V

I

2.95

2.90

V = 1.8 V

I

V = 1.8 V

I

2.55

2.50

2.85

2.80

10

15

20

25

30

0

5

0

5

10

15

20

25

30

I

O

– Output Current – mA

I

O

– Output Current – mA

Figure 15

Figure 16

10

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

TYPICAL CHARACTERISTICS

TPS60241

OUTPUT VOLTAGE

vs

TPS60241

QUIESCENT CURRENT

vs

FREE-AIR TEMPERATURE

INPUT VOLTAGE

4.988

4.986

4.984

4.982

4.98

275

270

265

260

255

250

245

V = 2.7 V, I = 0.1 mA

I

O

T

A

= 25°C

V = 5 V, I = 0 mA

I

O

V = 5 V,

I

O

I

= 5 mA

4.978

4.976

4.974

4.972

4.97

V = 2.7 V, I = 0 mA

I

O

V = 3 V, I = 5 mA

I

O

4.968

4.966

V = 5 V, I = 12 mA

I

O

4.964

4.962

4.96

V = 3 V, I = 12 mA

I

O

240

235

–60 –40 –20

0

20 40 60 80 100 120

2.5

3

3.5

4

4.5

5

5.5

T

A

– Free-Air Temperature – °C

V – Input Voltage – V

I

Figure 18

Figure 17

TPS60241

QUIESCENT CURRENT

vs

TPS60241

SHUTDOWN CURRENT

vs

FREE-AIR TEMPERATURE

0.1

300

280

260

240

220

200

180

160

140

0.08

0.06

0.04

0.02

V = 3 V

I

V = 3 V

I

0

–0.02

–0.04

–0.06

–0.08

–0.1

120

100

–60 –40 –20

0

20 40

60 80 100 120

–60 –40 –20

0

20 40

60 80 100 120

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 19

Figure 20

11

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

TYPICAL CHARACTERISTICS

TPS60240

MAXIMUM OUTPUT CURRENT

vs

TPS60241

OUTPUT NOISE VOLTAGE

vs

INPUT VOLTAGE

OUTPUT CURRENT

60

50

40

30

20

10

0

240

220

200

180

160

140

C = C = 4.7 µF

Bandwidth = 20 Hz to 10 MHz

I

O

T

= 85°C

= 25°C

A

V = 5 V

I

T

A

V = 3.3 V

I

T

A

= –40°C

V = 2.7 V

I

120

100

0

5

10

15

20

25

30

1.5

2

2.5

3

3.5

4

4.5

5

5.5

V – Input Voltage – V

I

O

– Output Current – mA

Figure 21

Figure 22

TPS60242

MAXIMUM OUTPUT CURRENT

vs

TPS60241

MAXIMUM OUTPUT CURRENT

vs

INPUT VOLTAGE

60

50

40

30

20

10

0

60

T

= 85°C

= 25°C

A

T

= 85°C

= 25°C

A

50

40

T

A

T

A

T

A

= –40°C

T

A

= –40°C

30

20

10

0

1.5

2

2.5

3

3.5

4

4.5

5

5.5

2.5

3

3.5

4

4.5

5

5.5

V – Input Voltage – V

I

V – Input Voltage – V

I

Figure 23

Figure 24

12

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

TYPICAL CHARACTERISTICS

TPS60243

MAXIMUM OUTPUT CURRENT

vs

LOAD TRANSIENT RESPONSE

INPUT VOLTAGE

60

50

40

30

20

Output Voltage = 5 mV/div

25 µs/div

T

= 85°C

= 25°C

A

T

A

T

A

= –40°C

V = 3.3 V

I

A

T

= 25°C

10

0

Load Current = 0 mA – 10 mA @ 5 mA/div

1.5

2

2.5

3

3.5

4

4.5

5

5.5

V – Input Voltage – V

I

Figure 25

Figure 26

START-UP TIMING

LINE TRANSIENT RESPONSE

Enable = 0 V – 2 V @ 2 V/div

Output Voltage = 10 mV/div

C = C = C1 = C2 = 1 µF

I

L

O

R

= 500 Ω

R

= 500 Ω

L

V = 3.3 V

I

V = 3.3 V

I

A

Input Voltage = 3 V – 4 V

– 3 V @ 0.5 V/div

I

T

= 10 mA

= 25°C

O

A

T

= 25°C

Output Voltage = 2 V/div

250 µs/div

100 µs/div

Figure 27

Figure 28

13

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

TYPICAL CHARACTERISTICS

TPS60241

NOISE VOLTAGE SPECTRUM

10 mVrms

Ǹ

Hz

C = C = 4.7 µF

I

O

C1 = C2 = 1 µF

= 500 Ω

R

O

V = 3.3 V

I

A

T

= 25°C

100 nVrms

Ǹ

Hz

10 Hz

100 Hz

1 kHz

10 kHz

100 kHz

Figure 29

TPS60241

OUTPUT VOLTAGE RIPPLE

vs

TIME

C = C = 1 µF

I

O

R

= 500 Ω

L

V = 3.3 V

I

A

T

= 25°C

C = C = 4.7 µF

I

O

2.5 µs/div

NOTE: Scope triggered by voltage at flying capacitors, noise removed by averaging function and bandwidth limit 20 MHz.

Figure 30

14

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

APPLICATION INFORMATION

5 V

V

C

V

3.3 V

IN

OUT

CC

TPS60241

C

1+

2+

C

1 µF

C

1 µF

C

1 µF

C

2

1 µF

O

I

1

VCO

C

1–

2–

GND

EN

Figure 31. 5-V Low-Noise VCO Supply From 3.3-V Input

3.3 V

V

C

V

O

2 V

IN

OUT

TPS60240

C

1+

2+

C

O

1 µF

C

1 µF

C

1 µF

1

2

C

1 µF

I

C

1–

2–

GND

EN

Figure 32. 2-V to 3.3-V Low-Noise Converter

output voltage ripple

The output voltage ripple depends on the capacitors used. Table 1 illustrates the dependence between output

voltage ripple and capacitor selection.

Table 1. Output Voltage Ripple and Capacitor Selection

OUTPUT VOLTAGE RIPPLE

C

2

I

O

1

[µVrms]

1 µF

2.2 µF

4.7 µF

1 µF

2.2 µF

4.7 µF

1 µF

288

212

183

272

4.7 µF

185

NOTE: V = 3.3 V,

V

= 5 V,

R

= 500 Ω,

T = 25°C

A

I

O

L

15

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

APPLICATION INFORMATION

components

For the best output ripple performance, low-ESR ceramic capacitors are recommended (see Table 2).

Table 2. Recommended Capacitors

DIELECTRIC

MATERIAL

RATED

VOLTAGE

PART

MANUFACTURER

PART NUMBER

VALUE

TOLERANCE

PACKAGE

Taiyo Yuden

TDK

LMK212BJ105KG–T

C2012X5R0J475K

LMK212BJ105KG–T

C2012X5R0J475K

LMK212BJ105KG–T

1 µF

4.7 µF

1 µF

10%

X7R

X5R

X7R

X5R

X7R

0805

10

6.3

10

C

I

Taiyo Yuden

TDK

O

4.7 µF

1 µF

6.3

10

C , C

Taiyo Yuden

1

2

C

1 µF

10

F

layout consideration

In order to get optimal noise behavior, keep the power lines to the capacitors and load as short as possible. Use

of power planes is recommended.

V

O

V

C

V

OUT

V

I

IN

TPS6024X

C

1+

2+

C

O

C

1

2

Load

C

I

1–

2–

GND

EN

GND

Figure 33. Layout Diagram

16

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TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

APPLICATION INFORMATION

Figure 34. Top Silkscreen

Figure 35. Top Layer

device family products

PART NUMBER

DESCRIPTION

REG710

REG711

30-mA switched cap dc/dc converter

50-mA switched cap dc/dc converter

TPS60110

TPS60111

Regulated 5-V, 300-mA low-noise charge pump dc/dc converter

Regulated 5-V, 150-mA low-noise charge pump dc/dc converter

17

www.ti.com

TPS60240, TPS60241

TPS60242, TPS60243

SLVS372B – JUNE 2001 – REVISED JANUARY 2002

MECHANICAL DATA

DGK (R-PDSO-G8)

PLASTIC SMALL-OUTLINE PACKAGE

0,38

0,25

M

0,65

0,25

8

5

0,15 NOM

3,05

2,95

4,98

4,78

Gage Plane

0,25

0°–ā6°

1

4

0,69

3,05

2,95

0,41

Seating Plane

0,10

0,15

0,05

1,07 MAX

4073329/B 04/98

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.

C. Body dimensions do not include mold flash or protrusion.

D. Falls within JEDEC MO-187

18

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PACKAGE OPTION ADDENDUM

www.ti.com

12-Sep-2005

PACKAGING INFORMATION

Orderable Device

Status ⁽¹⁾

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

DGK

TPS60240DGK

TPS60240DGKR

TPS60240DGKT

TPS60241DGKR

TPS60241DGKT

TPS60242DGK

TPS60242DGKR

TPS60242DGKT

TPS60243DGK

TPS60243DGKR

TPS60243DGKT

ACTIVE

MSOP

8

TBD

Call TI

2500

250

CU NIPDAU Level-2-240C-1 YEAR

2500

250

Call TI

2500

250

CU NIPDAU Level-3-235C-168 HR

CU NIPDAU Level-2-240C-1 YEAR

Call TI

2500

250

CU NIPDAU Level-2-240C-1 YEAR

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan

-

The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS

&

no Sb/Br)

-

please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is

provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the

accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take

reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on

incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited

information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

to Customer on an annual basis.

Addendum-Page 1

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,

enhancements, improvements, and other changes to its products and services at any time and to discontinue

any product or service without notice. Customers should obtain the latest relevant information before placing

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TI warrants performance of its hardware products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI

deems necessary to support this warranty. Except where mandated by government requirements, testing of all

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TI assumes no liability for applications assistance or customer product design. Customers are responsible for

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Following are URLs where you can obtain information on other Texas Instruments products and application

solutions:

Products

Applications

Audio

Amplifiers

amplifier.ti.com

www.ti.com/audio

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dataconverter.ti.com

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www.ti.com/automotive

DSP

dsp.ti.com

Broadband

Digital Control

Military

www.ti.com/broadband

www.ti.com/digitalcontrol

www.ti.com/military

Interface

Logic

interface.ti.com

logic.ti.com

Power Mgmt

Microcontrollers

power.ti.com

Optical Networking

Security

www.ti.com/opticalnetwork

www.ti.com/security

www.ti.com/telephony

www.ti.com/video

microcontroller.ti.com

Telephony

Video & Imaging

Wireless

www.ti.com/wireless

Mailing Address:

Texas Instruments

Post Office Box 655303 Dallas, Texas 75265


型号：	TPS60240DGKR
厂家：	TEXAS INSTRUMENTS
描述：	170-uVrms ZERO-RIPPLE SWITCHED CAP BUCK-BOOST CONVERTER FOR VCO SUPPLY 170 uVrms零纹波开关电容降压 - 升压转换器， VCO电源转换器开关升压转换器
文件：	总20页 (文件大小：375K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TPS60240DGKR [TI]

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