LM2954

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 5

www.unisonic.com.tw

QW-R102-002.V



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

VALUE

UNIT

Supply Voltage

VCC

-0.3 ~ +30

V

Feedback Voltage

VFB

-1.5 ~ +30

V

Shutdown Voltage

VSHDN

-0.3 ~ +30

V

Comparator Output Voltage

VOUT

-0.3 ~ +30

V

Junction Temperature

TJ

+125

°C

Operating Temperature

TOPR

-40 ~ +85

°C

Storage temperature

TSTG

-40 ~ +150

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



ELECTRICAL CHARACTERISTICS(TJ=25°C, VIN=6V, IL=100μA, CL=1μF, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

Output Voltage

LM2954-3.3

VOUT

TJ=25°C

3.23

3.3

3.37

V

LM2954-5.0

4.90

5.0

5.10

Line Regulation

△

VOUT

≦

6V VIN≦30V

0.1

0.2

%

Load Regulation

△

VOUT

100μ ≦

AIL≦300mA

0.2

0.5

Dropout Voltage

VD

IL=100mA

400

mV

IL=200mA (Note 2)

380

450

600

Ground Current

IGND

IL=100μA

0.12

0.23

mA

IL=200mA

12

14

Dropout Ground Current

ID

VIN=4.5V, IL=100μA

0.85

1.2

mA

Current Limit

ILIMIT

VOUT=0

300

mA

FOR LM2954-ADJ 8-PIN VERSION ONLY

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Reference Voltage

VREF

1.22

1.235

1.25

V

Reference Voltage

VREF

VREFVOUT(VIN-1V),

2.3V

VIN18V,

100μA

IL100mA, TJTJMAX

1.19

1.27

V

Feedback Pin Bias Current

IB(FB)

20

40

nA

ERROR COMPARATOR

Output Leakage Current

IO(LEAK)

VOH=30V

1

μA

Output Low Voltage

VOL

VIN=4.5V, IOL=400μA

250

mV

Upper Threshold Voltage

VTHD(UP) (Note 3)

3.2

%VOUT

Lower Threshold Voltage

VTHD(LOW) (Note 3)

7.6

%VOUT

Hysteresis

VHYS

(Note 3)

15

mV

SHUTDOWN INPUT

Input Logic Voltage

VI(LOG)

Low (Regulator ON)

1.3

0.70

V

High (Regulator OFF)

2.0

Shutdown Pin Input Current

II(SHDN)

VSHDN=2.4V

30

50

μA

VSHDN=30V

450

600

μA

Regulator Output Current Shutdown

IO(SHDN)

VSHDN≧2V,VIN≦30V, VOUT=0,

Feedback pin tied to 5V Tap.

3

10

μA

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

(VOUT=5V) and VSHDN≦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.