LM2954L-AD-D08-K [UTC]

300mA LOW-DROPOUT VOLTAGE REGULATOR;


型号：	LM2954L-AD-D08-K
厂家：	Unisonic Technologies
描述：	300mA LOW-DROPOUT VOLTAGE REGULATOR
文件：	总7页 (文件大小：271K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

LM2954

LINEAR INTEGRATED CIRCUIT

300mA LOW-DROPOUT

VOLTAGE REGULATOR



DESCRIPTION

The UTC LM2954 is a monolithic integrated voltage regulator

with low dropout voltage, and low quiescent current. It includes

many features that suitable for different applications with TO-92,

DIP-8, SOP-8 and SOT-223 packages.



FEATURES

*High Accuracy Fixed Output.

*Output Voltage Programmable and Logic Controlled Shutdown

And Error Flag Available for DIP and SOP Package.

*Extremely Low Quiescent Current And Dropout Voltage.

*Extremely Tight Load And Line Regulation.

*Current and Thermal Limiting.

*Very low Temperature Coefficient.



ORDERING INFORMATION

Ordering Number

Lead Free

Pin assignment

Package

Packing

Halogen Free

LM2954L-xx-AA3-R

LM2954L-xx-AA3-A-R

LM2954L-xx-D08-T

LM2954L-xx-S08-R

LM2954L-xx-T92-B

LM2954L-xx-T92-K

LM2954G-xx-AA3-R

LM2954G-xx-AA3-A-R

LM2954G-xx-D08-T

LM2954G-xx-S08-R

LM2954G-xx-T92-B

LM2954G-xx-T92-K

SOT-223

DIP-8

Tape Reel

Tube

refer to Pin

Configurations

SOP-8

TO-92

Tape Reel

Tape Box

Bulk

TO-92

Note: Pin assignment: I: V_INO: V_OUT

G: GND

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LM2954

LINEAR INTEGRATED CIRCUIT



MARKING INFORMATION

PACKAGE

VOLTAGE CODE

MARKING

33:3.3V

50:5.0V

SOT-223

UTC

3.3:3.3V

5.0:5.0V

L: Lead Free

G: Halogen Free

LM2954

TO-92

Voltage Code

Data Code

DIP-8

3.3:3.3V

5.0:5.0V

AD: ADJ

SOP-8

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LM2954

LINEAR INTEGRATED CIRCUIT



PIN CONFIGURATIONS

UTC LM2954

OUTPUT

INPUT

GND

TO-92 Plastic Package Bottom View

UTC LM2954

INPUT

GND

OUTPUT

SOT-223 Package

OUTPUT

SENSE

INPUT

FEEDBACK

5V TAP

UTC LM2954

SHUTDOWN

GND

ERROR

SOP-8 or DIP-8 Package

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LM2954

LINEAR INTEGRATED CIRCUIT



BLOCK DIAGRAM

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LM2954

LINEAR INTEGRATED CIRCUIT



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

V_CC

VALUE

-0.3 ~ 28

-1.5 ~ 28

-0.3 ~ 28

+125

UNIT

Supply Voltage

Feedback Voltage

V_FB

Shutdown Voltage

V_SHDN

V_OUT

T_J

Comparator Output Voltage

Junction Temperature

Operating Temperature

Storage temperature

°C

T_OPR

T_STG

-40 ~ +85

-40 ~ +150

Notes: 1.Absolute maximum ratings are those values beyond which the device which the device could be

permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is

not implied.

2.The device is guaranteed to meet performance specification within 0°C~+70°C operating temperature range

and assured by design from -20°C~+85°C, characteristic and correlation with static process control.



ELECTRICAL CHARACTERISTICS(T_J=25°C, V_IN=6V, I_L=100μA, C_L=1μF, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN. TYP. MAX. UNIT

LM2954-3.3

LM2954-5.0

3.23

4.90

3.3

5.0

3.37

5.10

Output Voltage

V_OUTT_J=25°C

Output Voltage Temperature Coefficient

Line Regulation

T_CV_O

100 ppm/°C

△V_OUT6V≦V_IN≦28V

0.1

0.2

Load Regulation

△V_OUT100μA≦I_L≦300mA

0.5

I_L=100mA

V_D

400

600

Dropout Voltage

Ground Current

I_L=200mA (Note 2)

380

300

450

IL=100μA

IGND

0.12 0.23

IL=200μA

Dropout Ground Current

Current Limit

I_D

V_IN=4.5V, I_L=100μA

V_OUT=0

560

650

μA

I_LIMIT

C_L=1μF

430

160

100

Output Noise (10Hz to 100KHz)

e_N

μV

C_L=200μF

C_L=3.3μF

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LM2954

LINEAR INTEGRATED CIRCUIT



ELECTRICAL CHARACTERISTICS(Cont.)

LM2954-ADJ FOR 8-PIN VERSION ONLY

PARAMETER

Reference Voltage

SYMBOL

V_REF

TEST CONDITIONS

V_REFV_OUT(V_IN-1V),

MIN

TYP

MAX UNIT

1.22 1.235 1.25

Reference Voltage

V_REF

2.3VV_IN18V,

100μAI_L100mA, T_JT_JMAX

1.19

1.27

Feedback Pin Bias Current

Reference Voltage Temperature

Coefficient

I_B(FB)

T_CV_REF

ppm/°C

Feedback Bias Current Temperature

Coefficient

T_CI_O

0.1

nA/°C

ERROR COMPARATOR

Output Leakage Current

Output Low Voltage

I_O(LEAK)V_OH=28V

μA

V_OL

V_IN=4.5V, I_OL=400μA

250

Upper Threshold Voltage

Lower Threshold Voltage

Hysteresis

V_THD(UP)(Note 3)

V_THD(LOW)(Note 3)

3.2

2.0

%V_OUT

7.6 %V_OUT

V_HYS

(Note 3)

SHUTDOWN INPUT

Low (Regulator ON)

High (Regulator OFF)

V_SHDN=2.4V

1.3

0.70

Input Logic Voltage

V_I(LOG)

I_I(SHDN)

I_O(SHDN)

μA

Shutdown Pin Input Current

Regulator Output Current Shutdown

V_SHDN=28V

450

600

V_SHDN≧2V,V_IN≦28V, V_OUT=0,

μA

Feedback pin tied to 5V Tap.

Note: 1. Additional conditions for 8-pin versions are feedback tied to 5V Tap an Output tied to Output Sense

(V_OUT=5V) and V_SHDN≦0.8V.

2. Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below

its nominal value measured at 1V differential.

3. Comparator thresholds are expressed in terms of percentage value of voltage output.

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LM2954

LINEAR INTEGRATED CIRCUIT



APPLICATION CIRCUIT (10A Low Dropout Regulator)

For 8 Pins

CURRENT LIMIT

SECTION

+V_IN=VOUT+0.5V

0.05Ω

680Ω

2N3906

UTC

470Ω

D65H0

4.7MΩ

+VIN

+V_OUT10 A

10kΩ

ERROR

UTC LM2954

100μF

4.7μF

220Ω

20kΩ

GND V^OUT

47Ω

0.033μF

VOUT=1.23V*(1+R1/R2)

For 5V output use internal resistors.Wire pin 6 to 7 and wire pin 2 to +V^OUT

For 3 Pins

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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