CS5253-1GDPR5 datasheet(3/9 Pages) CHERRY

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Package Pin Description

PACKAGE PIN #

PIN SYMBOL

FUNCTION

Block Diagram

CONTROL

BIAS

and

TSD

REF

OUT

SENSE

Adjust

POWER

5Lead D2 PAK

1VSENSE

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.

Adjust

This pin is connected to the low side of the internally trimmed

1% bandgap reference voltage and carries a bias current of

about 50µA. A resistor divider from Adj to VOUT and from Adj

to ground sets the output voltage. Also, transient response can

be improved by adding a small bypass capacitor from this pin

to ground.

3VOUT

This pin is connected to the emitter of the power pass transistor

and provides a regulated voltage capable of sourcing 3A of

current.

4VCONTROL

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

the device to regulate, this voltage should be between 0.9V and

1.3V (depending on the output current) greater than the

output voltage. The control pin current will be about 1% of the

output current.

5VPOWER

This is the power input voltage. The 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 0.6V greater

than the output voltage, depending on output current. The out-

put load current of 3A is supplied through this pin.

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