LP2951-S08-R datasheet(4/7 Pages) ETL

4 / 7 page

LP2950/2951

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 7

www.unisonic.com.tw

QW-R102-001.L

ELECTRICAL CHARACTERISTICS(Cont.)

For UTC LP2951 8-Pin Version Only

PARAMETER

SYMBOL

TEST CONDITION

MIN

TYP

MAX

UNIT

Reference Voltage

VREF

1.22

1.235

1.25

Reference Voltage

VREF

Over temperature(Note 4)

1.19

1.27

Feedback pin Bias Current

IFB

Reference Voltage Temperature

Coefficient

VREF(TC)

ppm/

°C

Feedback Bias Current

Temperature Coefficient

IFB(TC)

0.1

nA/

°C

Error Comparator

Output Leakage Current

IO(LEAK) VOH=30V

μA

Output Low Voltage

VOL

VIN=4.5V, IOL=400μA

250

Upper

VTHU

(Note 3)

3.2

%VO

Threshold Voltage

Lower

VTHL

(Note 3)

7.6

%VO

Hysteresis

VHYS

(Note 3)

Shutdown Input

Low

VIL

Regulator ON

1.3

0.70

Input Logic Voltage

High

VIH

Regulator OFF

2.0

VSHDN=2.4V

μA

Shutdown Pin Input Current

ISHDN

VSHDN=30V

450

600

μA

Regulator Output Current

Shutdown

IDFF

VSHDN≧2V, VIN≦30V, VOUT=0

Feedback pin tied to 5V Tap.

μA

Note: 1.

Additional conditions for 8-pin versions are FB pin tied to 5VTAP, Output tied to Sense (VOUT=5V) and

VSHDN≤0.8V .

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.

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

VREF≤VOUT≤(VIN-1V), 2.3V≤VIN≤30V, 100μA≤IL≤100mA, TJ≤TJ(MAX)

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