A3950

更新时间： 2024-11-08 22:26:39

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
9页	318K
描述
DMOS Full-Bridge Motor Driver

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数据手册

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A3950 数据手册

Preliminary Data Sheet

Subject to Change without Notice

November 4, 2005

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.

Package LP, 16-pin TSSOP

with Exposed Thermal Pad

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.

Fault

NFAULT

MODE

PHASE

GND

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

ground, thermal shutdown with hysteresis, undervoltage monitoring of

V_BBand V_CP, and crossover-current protection.

VREG

VCP

GND

CP2

Control

Logic

SLEEP

ENABL

OUTA

Charge

Pump

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.

CP1

OUTB

VBB

SENSE

FEATURES

Approximate Scale 1:1

Low R_DS(on)outputs

Overcurrent protection

Motor lead short-to-supply protection

Short-to-ground protection

Sleep function

Synchronous rectification

Diagnostic output

Internal UVLO

Crossover-current protection

ABSOLUTE MAXIMUM RATINGS

Load Supply Voltage, V_{BB.............................................}36 V

Output Current, I_{OUT.......................................................}2.8 A

Sense Voltage, V_SENSE.................................±500 mV

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

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

Logic Input Voltage, V_IN..........................–0.3 to 7 V

Operating Temperature Range

Ambient, T_A, Range S .................... –20°C to 85°C

Junction Temperature, T_J(MAX)............................ 150°C

Storage Temperature, T_S................. –40°C to 125°C

Use the following complete part numbers when ordering:

Part Number

A3950SLP-T

Packing

96 pieces/tube

A3950SLPTR-T

13-in. reel, 4000 pieces/reel

A3950DS

12 3 4 5 6 7...9

中文翻译

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