2-2

Rev. 1.1

6/26/00

US1206/1207/1208/1209

Unless otherwise specified ,these specifications apply over ,Cin=Cout=10uF,Vin=Vo+1V, Vout=Vfb (for adjustable

version only), 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

Io=10mA

-1

1

%

See Table 1 for typical values

(Note 4)

-2

2

Line Regulation

dVi

Vo+1V<Vin<12

0.06

%/V

Load Regulation (note 1)

dVL

10mA<Io<1A

0.7

%

1mA<Io<150mA

0.5

%

Output voltage Temp Coef.

dVoT

20

100

ppm/

°C

Dropout Voltage (note 2)

dVio

Io=100mA (Note 4)

100

200

mV

Io=500mA (Note 4)

300

400

mV

Io=1000mA (Note 4)

500

650

mV

Ground Current (Note 3)

Iq

Vin=Vo +1

Io=100mA (Note 4)

3

mA

Io=500mA (Note 4)

15

mA

Io=1000mA (Note 4)

50

mA

Current Limit

Icl

Vo=0V

1.1

A

Minimum Input Voltage

Vinmin

2.1

2.3

V

US1208,1209

Adjust Pin Current

Iadj

Vin=2.5V,Vo=Vadj (Note 4)

0.1

uA

Minimum Load Current

Iomin

1

mA

ABSOLUTE MAXIMUM RATINGS

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Vin)

............................................................. 12V

Enable Input Voltage ........................................................... 12V

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

-65°C TO 150°C

Operating Junction Temperature Range ...................... 0°C TO 135°C

PACKAGE INFORMATION

PACKAGE INFORMATION

ELECTRICAL SPECIFICATIONS

ELECTRICAL SPECIFICATIONS

5 PIN PLASTIC TO263 ( M ) or 5 PIN POWER FLEX (P)

3 PIN PLASTIC TO263 ( M )

US1207

US1208

US1209

US1206-XX

FRONT VIEW

1

2

3

Vin

Gnd

Vout

FRONT VIEW

1

2

3

4

5

Enable

Vin

Gnd

Vout

Flag

8 PIN PLASTIC POWER SOIC ( S )

US1207

US1208

US1209

4

3

2

1

5

6

7

8

TOP VIEW

Gnd

Flag

Vout

Vin

Enable

Gnd

Gnd

Gnd

3 PIN PLASTIC TO252 ( D )

3 PIN PLASTIC SOT223 ( Y )

US1206

US1206

1

4

3

FRONT VIEW

Vin

Vout

Tab is

Gnd

0.5" Sq pad

0.4" Sq pad

3

1

2

TOP VIEW

Vin

Gnd

Vout

Tab is

Gnd

FRONT VIEW

1

2

3

4

5

Flag

Vin

Gnd

Vout

Adj

FRONT VIEW

1

2

3

4

5

Enable

Vin

Gnd

Vout

Adj

4

3

2

1

5

6

7

8

TOP VIEW

Gnd

Adj

Vout

Vin

Flag

Gnd

Gnd

Gnd

4

3

2

1

5

6

7

8

TOP VIEW

Gnd

Adj

Vout

Vin

Enable

Gnd

Gnd

Gnd