L1127/A/E

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

5 of 7

www.unisonic.com.tw

QW-R502-742.e



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

VIN, SHDN , ERROR to GND

-0.3 ~ +6.5

V

ADJ/SET, OUT to GND

-0.3 ~ (VIN+0.3)

V

Power Dissipation

PD

400

mW

Junction Temperature

TJ

+125

°С

Storage Temperature

TSTG

-65 ~ +150

°С

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.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

RATINGS

UNIT

VIN Supply Voltage

VIN

2.5 ~ 6

V

Output Voltage

VOUT

0.8 ~ 5.5

V

VOUT Output Current

IOUT

0 ~ 300

mA

Operating Temperature

TOPR

-40 ~ +85

°С



ELECTRICAL CHARACTERISTICS

(VIN = VOUT+1V (min VIN=2.5V), IOUT=0~300mA, CIN = 1μF, COUT =1μF, TA = 25°С, unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX

UNIT

Input Voltage

VIN

2.5

6

V

Output Voltage Accuracy(Preset)

VOUT

IOUT=1mA~300mA

-2

+2

%

Maximum Output Current

IOUT_MAX

300

mA

Quiescent Current

IGND

Normal operate, IOUT =10mA

120

200

μA

Shutdown mode.

0.1

5

Line Regulation

REGLINE VOUT+0.5V<VIN<6V, IOUT= 10mA

0.1

%/V

Load Regulation

REGLOAD VIN = VOUT+0.5V, 1mA<IOUT<300mA

0.6

%/A

Dropout Voltage

VD

VOUT =2.5V,IOUT = 300mA

230

360

mV

Soft-Start Time

TSS

50

uS

Thermal Shutdown Temperature

TSHDN

165

°С

Thermal Shutdown Hysteresis

DTSHDN

30

°С

SHUTDOWN INPUT

Shutdown Threshold

VIH

1.8

V

VIL

0.4

V

SHDN Pull Down Resistance

RSHDN

2

MΩ

ADJ/SET Mode(L1127A)

ADJ Voltage

VADJ

IOUT=1mA~300mA

0.784

0.8

0.816

V

SET Input Threshold for ADJ/Preset

100

mV

ERROR FLAG COMPARATOR (L1127E)

Threshold (VOUT/nominal VOUT)

VTHE

90

%

Output Voltage

VOLE

Sinking 100uA

0.04

0.1

V

Output High Leakage

VERROR =6V

1

uA