US1075

2-34

Rev. 1.0

9/14/99

Note 1 : Low duty cycle pulse testing with Kelvin con-

nections are required in order to maintain accurate data.

Note 2 : Drop-out voltage is defined as the minimum

differential voltage between Vin and Vout required to main-

tain regulation at Vout. It is measured when the output

voltage drops 1% below its nominal value.

Note 3 : Minimum load current is defined as the mini-

mum current required at the output in order for the out-

put voltage to maintain regulation. Typically the resistor

dividers are selected such that it automatically main-

tains this current.

ABSOLUTE MAXIMUM RATINGS

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Vin)

..................................................................

7V

Power Dissipation ............................................

Internally Limited

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

-65

Operating Junction Temperature Range .................. 0

PACKAGE INFORMATION

PACKAGE INFORMATION

3 PIN PLASTIC TO220 ( T )

3 PIN PLASTIC TO263 ( M )

3 PIN PLASTIC POWER FLEX ( P )

ELECTRICAL SPECIFICATIONS

ELECTRICAL SPECIFICATIONS

Unless otherwise specified ,these specifications apply over ,Cin=1uF,Cout=10uF,and Tj=0 to 150

values refer to Tj=25

PARAMETER

SYM

TEST CONDITION

MIN

TYP

MAX

UNITS

Reference Voltage

Io=10mA,Tj=25

V

Io=10mA, (Vin-Vo)=1.5V

1.225

1.250

1.275

Line Regulation

Io=10mA,1.3V<(Vin-Vo)<7V

0.2

%

Load Regulation (note 1)

Vin=3.3V,Vadj=0,10mA<Io<7.5A

0.4

%

Dropout Voltage

Io=7.5A

1.0

1.2

V

(note 2)

Io=4A

0.92

1.1

Current Limit

Vin=3.3V,dVo=100mV

7.6

9

A

Minimum Load Current

Vin=3.3V,Vadj=0V

5

10

mA

(note 3)

Thermal Regulation

30 mS PULSE,Vin-Vo=3V,Io=7.5A

0.02

%/W

Ripple Rejection

f=120HZ ,Co=25uF Tan

Io=7.5A,Vin-Vo=3V

60

70

dB

Adjust Pin Current

Io=10mA,Vin-Vo=1.5V,Tj=25

Io=10mA,Vin-Vo=1.5V

55

120

uA

Adjust Pin Current Change

Io=10mA,Vin-Vo=1.5V,Tj=25

0.2

5

uA

Temperature Stability

Vin=3.3V,Vadj=0V,Io=10mA

0.5

%

Long Term Stability

Tj=125

0.3

%

RMS Output Noise

Tj=25

0.003

%Vo

1

2

3

FRONT VIEW

Adj

Tab is

Vout

Vin

Vout

1

2

3

FRONT VIEW

Adj

Vout

Vin

Tab is

Vout

FRONT VIEW

1

3

2

Adj

Vout

Vin

Tab is

Vout