ML4900CS datasheet(2/8 Pages) MICRO-LINEAR

2 / 8 page

ML4900

PIN CONFIGURATION

PIN DESCRIPTION (Pin Number in Parentheses is for TSSOP Version)

NAME

FUNCTION

1 (1)

LSB input to the DAC which sets

the output voltage

2 (2)

Input to the DAC which sets the

output voltage

3 (3)

Input to the DAC which sets the

output voltage

4 (4)

MSB input to the DAC which sets

the output voltage

5 (6)

SHDN

Grounding this pin shuts down the

regulator

6 (8)

PWR GOOD

This open collector output goes

low whenever SHDN goes low or

when the output is not within

+10% of its nominal value

7 (9)

VREF

Bypass connection for the internal

3.5V reference

NAME

FUNCTION

8 (10)

GND

Analog signal ground

9 (11)

VFB

Output voltage feedback pin

10 (12) ISENSE

Current sense input

11 (13) COMP

Connection for the compensation

and optional soft-start delay

network

12 (15) PWR GND

Power ground

13 (16) N DRV L

Synchronous rectifier driver output

14 (17) N DRV H

Buck switch driver output

15 (19) VDD

12V power supply input

16 (20) PROTECT

Connection for the integrating

current limit network and the

UVLO monitor for the 5V supply

SHDN

PWR GOOD

VREF

GND

PROTECT

VDD

N DRV H

N DRV L

PWR GND

COMP

ISENSE

VFB

TOP VIEW

ML4900

16-Pin Narrow SOIC (S16N)

SHDN

PWR GOOD

VREF

GND

PROTECT

VDD

N DRV H

N DRV L

PWR GND

COMP

ISENSE

VFB

TOP VIEW

ML4900

20-Pin TSSOP (T20)

ML4900CS 数据表(PDF) 2 Page - Micro Linear Corporation

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