Revision 12/30/2011

Preliminary and all contents are subject to change without prior notice.

© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 3

Electrical Characteristic

TA = 25

℃, V

IN

=5V unless otherwise noted

Parameter

Symbol

Test Condition

Min

Typ

Max

Units

Input Voltage Range

VIN

Note

6

V

Output Voltage

VO

IO=1mA

-2

2

%

Dropout Voltage

VDROP

OUT

IO=300mA

2.0V<VO(NOM)<=2.

8V

400

mV

VO=VONO

M -2.0%

2.8V<VO(NOM)<3.8

V

300

Output Current

IO

VO>1.2V

300

mA

Current Limit

ILIM

VO>1.2V

550

mA

Quiescent Current

IQ

IO=0mA

35

50

uA

Line Regulation

REGlIN

IO=5mA ; VIN=VO+1 to 5.5V

0.1

%/V

Load Regulation

REGLO

IO=1mA to 300mA

0.2

%

Over TemeratureShutdown

OTS

150

℃

Over Temerature Hysterisis

OTH

30

℃

VO Temperature

TC

30

ppm/

℃

Power Supply Rejection

PSRR

IO=100mA

f=100Hz

60

dB

f=1kHz

35

Output Voltage Noise

eN

f=10Hz to

100kHz

Co=2.2mF

30

uVrms

ADJ Input Bias Current

IADJ

30

nA

ADJ Reference Voltage

VREF

-2%

1.21

+2%

V

EN Input Threshold

VEH

VIN=2.7V to 6V

2.0

Vin

V

VEL

VIN=2.7V to 6V

0

0.4

V

EN Input Bias Current

IEN

VEN=VIN, VIN=2.7V to 6V

0.1

mA

Shutdown Supply Current

ISD

VIN=5V, VO=0V, VEN<VEL

0.5

1

uA

Shutdown Output Voltage

VO,SD

IO=35mA,VEN<VEL

0

0.1

V

Output Under Voltage

VUV

85

%VO(N

Output Over Voltage

VOV

115

%VO(N

PG Leakage Current

ILC

VPG=5.5V

1

mA

PG Voltage Rating

VPG

VO in regulation

5.5

V

PG Voltage Low

VOL

ISINK=0.4mA

0.4

V

Note1:Vin(min)=Vout+Vdropout