ML4902CT datasheet(2/12 Pages) MICRO-LINEAR

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ML4902

PIN CONFIGURATION

NAME

FUNCTION

LSB input to the DAC which sets the

output voltage

Input to the DAC which sets the

output voltage

Input to the DAC which sets the

output voltage

MSB input to the DAC which sets the

output voltage

RANGE

Range selection bit for the 2 chord 4-

bit DAC. Logic 1 sets the range at

2.1V to 3.5V with an LSB of 100mV.

Logic 0 sets the range at 1.8V to

2.05V with an LSB of 50mV

SHDN

Grounding this pin shuts down the

regulator

PWR GOOD This open drain output goes low

whenever SHDN goes low or when

the output is not within +10% of its

nominal value

NAME

FUNCTION

9VREF

Bypass connection for the internal

3.5V reference

GND

Analog signal ground

VFB

Output voltage feedback pin

ISENSE

Current sense input

COMP

Connection for the compensation and

optional soft-start delay network

PWR GND

Power ground

N DRV L

Synchronous rectifier driver output

N DRV H

Buck switch driver output

VCC

Connection point for monitoring the

5V supply to determine the proper

condition of PWR GOOD

VDD

12V power supply input

PROTECT

Connection for the integrating current

limit network

PIN DESCRIPTION

TOP VIEW

ML4902

20-Pin TSSOP (T20)

RANGE

SHDN

PWR GOOD

VREF

GND

PROTECT

VDD

VCC

N DRV H

N DRV L

PWR GND

COMP

ISENSE

VFB

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