US1205

2-2

Rev. 1.4

9/25/00

ABSOLUTE MAXIMUM RATINGS

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Vin)

............................................................. 10V

Enable Input Voltage ...........................................................

10V

Storage Temperature Range ................................

-65°C TO 150°C

Operating Junction Temperature Range ...................... 0°C TO 150°C

PACKAGE INFORMATION

PACKAGE INFORMATION

5 PIN SOT23 ( L ) Adjustable

5 PIN SOT23 ( L ) Fixed

ELECTRICAL SPECIFICATIONS

ELECTRICAL SPECIFICATIONS

Unless otherwise specified ,these specifications apply over ,Cin=Co=22uF, Io=100uA, Vinmin=2.5V(Adjustable

devices) Vin=Vo+1V(for fixed voltage devices), Vout=Vfb (for adjustable version only), Cbyp=470pF(for fixed output

versions only), Venb=2V and Ta=25

°C. Typical values refer to Ta=25 °C.Low duty cycle pulse testing are used

which keeps junction and case temperatures equal to the ambient temperature.

PARAMETER

SYM

TEST CONDITION

MIN

TYP

MAX

UNITS

Reference Voltage

Vo

-1

1

%

See Table 1 for typical values

(Note 4)

-2

2

Line Regulation

dVi

Vo+1V<Vin<10

0.005

%/V

Load Regulation (note 1)

dVL

1mA<Io<100mA

0.8

%

100mA<Io<300mA

0.1

%

Dropout Voltage (note 2)

dVio

Io=100uA

10

50

mV

Io=100uA (Note 4)

13

70

mV

Io=50mA

85

110

mV

Io=50mA (Note 4)

100

140

mV

Io=150mA

170

220

mV

Io=150mA (Note 4)

204

260

mV

Io=300mA

270

350

mV

Io=300mA (Note 4)

324

400

mV

Ground Current (Note 3)

Iq

Ven=2V, Io=100uA

120

160

uA

Io=100uA (Note 4)

240

uA

Io=50mA

420

600

uA

Io=50mA (Note 4)

540

uA

Io=150mA

2200

2900

uA

Io=150mA (Note 4)

2900

uA

Io=300mA

7200

9500

uA

Io=300mA (Note 4)

9300

uA

Ground Current-S.D Activated

Iqsd

S.D pin<0.1V

0.1

uA

S.D pin=0.8V

8

Current Limit

Icl

Vo=0V

320

420

mA

Thermal Regulation

dVp

Vin=10V, Io=150mA,10 mS PULSE

0.05

%/W

Adjust Pin Current

Iadj

Vin=2.5V,Vo=Vadj

0.1

uA

Enable pin input LO voltage

Venl

Regulator OFF

0.8

V

Enable pin input HI voltage

Venh

Regulator ON

2

V

Enable pin input LO current

Venl=0V to 0.8V

0.01

uA

Enable pin input HI current

Venh=2V to Vin

20

uA

En

3

2

1

4

5

Adj

Gnd Vin

Vout

AT00

En

3

2

1

4

5

Byp

Gnd Vin

Vout

ATxx