RC1117MT [FAIRCHILD]

1A Adjustable/Fixed Low Dropout Linear Regulator; 1A可调式/固定式低压降线性稳压器


型号：	RC1117MT
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	1A Adjustable/Fixed Low Dropout Linear Regulator 1A可调式/固定式低压降线性稳压器稳压器
文件：	总9页 (文件大小：50K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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RC1 1 1 7

1 A Ad ju s t a b le /Fix e d Lo w Dro p o u t Lin e a r Re g u la t o r

Features

Description

• Low dropout voltage

• Load regulation: 0.05% typical

• Trimmed current limit

• On-chip thermal limiting

• Standard SOT-223, TO-263, and TO-252 packages

• Three-terminal adjustable or ﬁxed 2.5V, 2.85V, 3.3V, 5V

The RC1117 and RC1117-2.5, -2.85, -3.3 and -5 are low

dropout three-terminal regulators with 1A output current

capability. These devices have been optimized for low voltage

where transient response and minimum input voltage are

critical. The 2.85V version is designed speciﬁcally to be

used in Active Terminators for SCSI bus.

Current limit is trimmed to ensure speciﬁed output current

and controlled short-circuit current. On-chip thermal limiting

provides protection against any combination of overload and

ambient temperatures that would create excessive junction

temperatures.

Applications

• Active SCSI terminators

• High efﬁciency linear regulators

• Post regulators for switching supplies

• Battery chargers

• 5V to 3.3V linear regulators

• Motherboard clock supplies

Unlike PNP type regulators where up to 10% of the output

current is wasted as quiescent current, the quiescent current

of the RC1117 ﬂows into the load, increasing efﬁciency.

The RC1117 series regulators are available in the industry-

standard SOT-223, TO-263 (D2PAK), and TO-252 (DPAK)

power packages.

Typical Applications

RC1117

V_IN= 3.3V

V_IN

V_OUT

1.5V at 1A

10µF

22µF

124Ω

ADJ

24.9Ω

V_OUT= V_REF(1+R2/R1) + I_Adj• R2

RC1117-2.85

V_OUT

V_IN= 5V

V_IN

2.85V at 1A

10µF

22µF

GND

REV. 1.3.2 10/16/03

PRODUCT SPECIFICATION

RC1117

Pin Assignments

Tab is

V_OUT

Tab is

V_OUT

Front View

Tab is

V_OUT

OUT

ADJ/GND

4-Lead Plastic SOT-223

Θ_JC= 15°C/W*

ADJ/

GND

ADJ/ OUT

GND

3-Lead Plastic TO-252

3-Lead Plastic TO-263

Θ_JC= 3°C/W*

*With package soldered to 0.5 square inch copper area over backside ground plane or internal power plane., Θ_JAcan vary from

30°C/W to more than 50°C/W. Other mounting techniques may provide better thermal resistance than 30°C/W.

Absolute Maximum Ratings

Parameter

Min.

Max.

7.5

Unit

V_IN

Operating Junction Temperature Range

Storage Temperature Range

Lead Temperature (Soldering, 10 sec.)

125

150

300

°C

-65

REV. 1.3.2 10/16/03

RC1117

PRODUCT SPECIFICATION

Electrical Characteristics

Operating Conditions: V_IN≤ 7V, T_J= 25°C unless otherwise speciﬁed.

The • denotes speciﬁcations which apply over the speciﬁed operating temperature range.

Parameter

Conditions

Min.

Typ.

Max. Units

Reference Voltage, V_REF

1.5V ≤ (V_IN- V_OUT) ≤ 5.75V,

10mA ≤ I_OUT≤ 1A

•

1.225

(-2%)

1.250

1.275

(+2%)

Output Voltage

10mA ≤ I_OUT≤ 1A

RC1117-2.5, 4V ≤ V_IN≤ 7V

RC1117-2.85, 4.35V ≤ V_IN≤ 7V

RC1117-3.3, 4.8V ≤ V_IN≤ 7V

RC1117-5, 6.5V ≤ V_IN≤ 7V

•

2.450

2.793

3.234

4.900

2.5

2.85

3.3

2.550

2.907

3.366

5.100

5.0

Line Regulation^1,2

Load Regulation^1,2

Dropout Voltage

Current Limit

(V_OUT+ 1.5V) ≤ V_IN≤ 7V, I_OUT= 10mA

(V_IN– V_OUT) = 2V, 10mA ≤ I_OUT≤ 1A

∆V_REF= 1%, I_OUT= 1A

•

0.005

0.05

1.100

1.5

0.2

0.5

1.200

(V_IN– V_OUT) = 2V

1.1

Adjust Pin Current, I_Adj

Adjust Pin Current Change³

120

µA

1.5V ≤ (V_IN– V_OUT) ≤ 5.75,

10mA ≤ I_OUT≤ 1A

0.2

Minimum Load Current

Quiescent Current

Ripple Rejection

1.5V ≤ (V_IN– V_OUT) ≤ 5.75

•

V_IN= V_OUT+ 1.25V

f = 120Hz, C_OUT= 22µF Tantalum,

(V_IN– V_OUT) = 3V, I_OUT= 1A

Thermal Regulation

Temperature Stability

Long-Term Stability

RMS Output Noise

T_A= 25°C, 30ms pulse

0.004

0.5

0.02

1.0

%/W

•

T_A= 125°C, 1000hrs.

0.03

0.003

T_A= 25°C, 10Hz ≤ f ≤ 10kHz

(% of V_OUT

)

Thermal Resistance, Junction SOT-223

to Case

°C/W

°C

TO-252, TO-263

Thermal Shutdown

Junction Temperature

155

Thermal Shutdown

Hysteresis

°C

Notes:

1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are

measured at a constant junction temperature by low duty cycle pulse testing.

2. Line and load regulation are guaranteed up to the maximum power dissipation (18W). Power dissipation is determined by

input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/

output voltage range.

3. RC1117 only.

REV. 1.3.2 10/16/03

PRODUCT SPECIFICATION

RC1117

Typical Performance Characteristics

1.5

1.4

0.10

0.05

∆I = 1A

1.3

1.2

1.1

T = 0°C

1.0

0.9

0.8

0.7

0.6

0.5

-0.05

-0.10

T = 25°C

T = 125°C

-0.15

-0.20

0.2

0.4

0.6

0.8

1.0

-75 -50 -25

25 50 75 100 125150 175

OUTPUT CURRENT (A)

JUNCTION TEMPERATURE (°C)

Figure 1. Dropout Voltage vs. Output Current

Figure 2. Load Regulation vs. Temperature

1.250

1.245

1.240

1.235

1.230

1.225

1.220

1.215

1.210

1.205

1.200

3.70

V_OUTSET WITH 1% RESISTORS

3.65

V_OUT= 3.6V¹

3.60

3.55

3.50

3.45

3.40

3.35

V_OUT= 3.3V

3.30

3.25

3.20

Note:

1. RC1117 Only

-75 -50 -25

25 50 75 100 125150 175

-75 -50 -25

25 50 75 100 125150 175

JUNCTION TEMPERATURE (°C)

Figure 3. Reference Voltage vs. Temperature

Figure 4. Output Voltage vs. Temperature

100

Note:

1. RC1117 Only

-75 -50 -25

25 50 75 100 125150 175

-75 -50 -25

25 50 75 100 125150 175

JUNCTION TEMPERATURE (°C)

Figure 5. Minimum Load Current vs. Temperature

Figure 6. Adjust Pin Current vs. Temperature

REV. 1.3.2 10/16/03

RC1117

PRODUCT SPECIFICATION

Typical Performance Characteristics (continued)

2.0

1.75

1.5

1.25

(V_IN- V_OUT) = 3V

0.5 < V_RIPPLE< 2V

_OUT= 1A

1.0

-75 -50 -25

25 50 75 100 125150 175

100

10K

100K

JUNCTION TEMPERATURE (°C)

FREQUENCY (Hz)

Figure 7. Short-Circuit Current vs. Temperature

Figure 8. Ripple Rejection vs. Frequency

7.5

TO-252 & TO-263

SOT-223

2.5

105

125

CASE TEMPERATURE (°C)

Figure 9. Maximum Power Dissipation

REV. 1.3.2 10/16/03

PRODUCT SPECIFICATION

RC1117

Mechanical Dimensions

4-Lead SOT-223 Package

Inches

Millimeters

Symbol

Notes

Min.

Max.

Min.

Max.

—

.071

.181

.033

.090

.264

.148

.124

.041

.287

—

1.80

4.80

.840

2.29

6.71

3.71

3.15

1.04

7.29

—

.025

—

.640

—

.248

.130

.115

.033

.264

.012

—

6.30

3.30

2.95

.840

6.71

.310

—

10°

16°

10°

16°

.0008

10°

.0040

16°

.0203

10°

.1018

16°

.010

.014

.250

.360

REV. 1.3.2 10/16/03

RC1117

PRODUCT SPECIFICATION

Mechanical Dimensions

3-Lead TO-252 Package

6.73

6.35

6.00 MIN

5.46

5.21

6.50 MIN

6.25

1.02

0.84

3.00 MIN

1.14

0.78

2.30

1.40 MIN

(0.59)

0.89

4.80

2.29

0.54

4.57

0.25

LAND PATTERN RECOMMENDATION

2.38

2.18

SEE

NOTE D

0.58

0.48

10.41

9.40

SEE

DETAIL A

0.10

NOTES: UNLESS OTHERWISE SPECIFIED

0.51

GAGE PLANE

A) ALL DIMENSIONS ARE IN MILLIMETERS.

B) THIS PACKAGE CONFORMS TO JEDEC, TO-252,

ISSUE C. VARIATION AA & AB, DATED NOV. 1999.

0.61

0.48

(1.54)

C) DIMENSIONING AND TOLERANCING PER

10°

0°

ASME Y14.5–1994.

D) HEAT SINK TOP EDGE COULD BE IN CHAMFERED

CORNERS OR EDGE PROTRUSION.

1.78

1.40

E) DIMENSIONS L3, D, E1 & D1 TABLE:

0.127 MAX

SEATING PLANE

OPTION AA OPTION AB

L3 0.89 – 1.27 1.52 – 2.03

2.90

5.97 – 6.22 5.33 – 5.59

DETAIL A

E1 4.32 MIN

D1 5.21 MIN

3.81 MIN

4.57 MIN

(ROTATED –90°

SCALE 12X

REV. 1.3.2 10/16/03

PRODUCT SPECIFICATION

RC1117

Mechanical Dimensions

3-Lead TO-263 Package

Notes:

Inches

Millimeters

1. Dimensions are exclusive of mold flash and metal burrs.

Symbol

Notes

2. Standoff-height is measured from lead tip with ref. to Datum -B-.

3. Foot length is measured with ref. to Datum -A- with lead surface

(at inner R).

4. Dimensiuon exclusive of dambar protrusion or intrusion.

5. Formed leads to be planar with respect to one another at seating

place -C-.

Min.

Max.

Min.

Max.

.160

.020

.049

.045

.340

.380

.190

.036

.051

.055

.380

.405

4.06

0.51

1.25

1.14

8.64

9.65

4.83

0.91

1.30

1.40

9.65

10.29

.100 BSC

2.54 BSC

.575

.090

—

.017

0°

.625

14.61

2.29

—

0.43

0°

15.88

2.79

1.40

0.78

8°

.110

.055

.019

8°

@PKG/

@HEATSINK

E-PIN

R (2 PLCS)

-B- -A-

-C-

REV. 1.3.2 10/16/03

PRODUCT SPECIFICATION

RC1117

Ordering Information

Product Number

RC1117DT

Output

Package

Adjustable

2.5 volt

2.85 volt

3.3 volt

5 volt

TO-252 in tape and reel

TO-263

RC1117M

RC1117MT

TO-263 in tape and reel

SOT-223 in tape and reel

TO-252 in tape and reel

TO-263

RC1117ST

RC1117D25T

RC1117M25

RC1117M25T

RC1117S25T

RC1117M285

RC1117M285T

RC1117S285T

RC1117D33T

RC1117M33

RC1117M33T

RC1117S33T

RC1117D5T

RC1117M5

TO-263 in tape and reel

SOT-223 in tape and reel

TO-263

TO-263 in tape and reel

SOT-223 in tape and reel

TO-252 in tape and reel

TO-263

TO-263 in tape and reel

SOT-223 in tape and reel

TO-252 in tape and reel

TO-263

5 volt

RC1117M5T

RC1117S5T

5 volt

TO-263 in tape and reel

SOT-223 in tape and reel

5 volt

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO

ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME

ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;

NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES

OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR

CORPORATION. As used herein:

1. Life support devices or systems are devices or systems

which, (a) are intended for surgical implant into the body,

or (b) support or sustain life, and (c) whose failure to

perform when properly used in accordance with

instructions for use provided in the labeling, can be

reasonably expected to result in a significant injury of the

user.

2. A critical component in any component of a life support

device or system whose failure to perform can be

reasonably expected to cause the failure of the life support

device or system, or to affect its safety or effectiveness.

www.fairchildsemi.com

10/16/03 0.0m 005

Stock#DS30001117

2001 Fairchild Semiconductor Corporation

RC1117MT [FAIRCHILD]

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