CS5253-1 查看數據表（PDF） - Cherry semiconductor

零件编号

产品描述 (功能)

比赛名单

CS5253-1

3A LDO 5-Pin Adjustable Linear Regulator

Cherry semiconductor 

PACKAGE PIN #

5Lead D2 PAK

1

2

3

4

5

Package Pin Description

PIN SYMBOL

FUNCTION

VSENSE

Adjust

VOUT

VCONTROL

VPOWER

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.

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.

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

and provides a regulated voltage capable of sourcing 3A of

current.

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.

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.

VPOWER

VCONTROL

Block Diagram

BIAS

and

TSD

VREF

- EA

+

IA

+

-

VOUT

VSENSE

Adjust

3

Share Link: