Package Pin Description

PACKAGE PIN #

PIN SYMBOL

FUNCTION

3

Block Diagram

V

POWER

V

CONTROL

BIAS

and

TSD

V

REF

EA

IA

V

OUT

V

SENSE

Adjust

-

+

-

+

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

0.1

1

mA

Output Current

Note 1:

The minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor

divider used to set the output voltage is selected to meet the minimum load current requirement.

Note 2:

The control pin current is the drive current required for the output transistor. This current will track output current with

roughly a 1:100 ratio. The minimum value is equal to the quiescent current of the device.

Note 3:

This parameter is guaranteed by design and is not 100% production tested.

Note 4:

ferential required to maintain 1.5% regulation at a particular load.

Note 5:

This parameter is guaranteed by design, but not parametrically tested in production. However, a 100% thermal shutdown

functional test is performed on each part.

5L TO-220

This Kelvin sense pin allows for remote sensing of the output voltage at the load

for improved regulation. It is internally connected to the positive input of the

voltage sensing error amplifier.

2

Adjust

This pin is connected to the low side of the internally trimmed 1.5% bandgap refer-

ence voltage and carries a bias current of about 50µA. A resistor divider from Adj

can be improved by adding a small bypass capacitor from this pin to ground.

This pin is connected to the emitter of the power pass transistor and provides a

regulated voltage capable of sourcing 10A of current.

This is the supply voltage for the regulator control circuitry. For the device to

regulate, this voltage should be between 1V and 1.4V (depending on the output

current) greater than the output voltage. The control pin current will be about 1%

of the power pin output current .

This is the power input voltage. This pin is physically connected to the collector of

the power pass transistor. For the device to regulate, this voltage should be

between 0.1V and .8V greater than the output voltage depending on output cur-

rent. The output load current of 10A is supplied through this pin.