A3950DS

A3950

DMOS Full-Bridge Motor Driver

Designed for PWM (pulse width modulated) control of dc motors, the

A3950 is capable of peak output currents to ±2.8 A and operating volt-

ages to 36 V.

PHASE and ENABLE input terminals are provided for use in control-

ling the speed and direction of a dc motor with externally applied PWM

control signals. Internal synchronous rectification control circuitry is

provided to lower power dissipation during PWM operation.

Internal circuit protection includes motor lead short-to-supply / short-to-

ground, thermal shutdown with hysteresis, undervoltage monitoring of

The A3950 is supplied in a thin profile (<1.2 mm overall height) 16-pin

TSSOP package with exposed thermal pad (package LP). It is lead (Pb)

free with 100% matte tin leadframe plating.

Use the following complete part numbers when ordering:

ABSOLUTE MAXIMUM RATINGS

VBB to OUTx .................................................... 36 V

OUTx to SENSE ................................................ 36 V

Operating Temperature Range

FEATURES

Approximate Scale 1:1

Package LP, 16-pin TSSOP

with Exposed Thermal Pad

Part Number

Packing

A3950SLP-T

96 pieces / tube

A3950SLPTR-T

13-in. reel, 4000 pieces / reel

7

8

6

5

9

10

1

2

3

4

14

13

16

15

12

11

OUTB

VBB

SLEEP

ENABL

OUTA

SENSE

NFAULT

MODE

PHASE

GND

VCP

GND

CP2

CP1

VREG

NC

Control

Logic

Charge

Pump

Fault

Overcurrent protection

Motor lead short-to-supply protection

Short-to-ground protection

Sleep function

Synchronous rectification

Diagnostic output

Internal UVLO

Crossover-current protection

Preliminary Data Sheet

Subject to Change without Notice

November 4, 2005