参数资料
型号: APEK4954ELP-01-T-DK
厂商: Allegro Microsystems Inc
文件页数: 1/9页
文件大小: 0K
描述: BOARD EVAL MOTOR CONTROL A4954
标准包装: 1
主要目的: 电源管理,电机控制
嵌入式:
已用 IC / 零件: A4954
已供物品:
相关产品: 620-1384-1-ND - IC PWM MOTOR DVR DUAL 16-ETSSOP
620-1384-6-ND - IC PWM MOTOR DVR DUAL 16-ETSSOP
620-1384-2-ND - IC PWM MOTOR DVR DUAL 16-ETSSOP
其它名称: 620-1427
A4954
Dual Full-Bridge
DMOS PWM Motor Driver
Features and Benefits
? Low R DS(on) outputs
? Overcurrent protection (OCP)
? Motor short protection
? Motor lead short to ground protection
? Motor lead short to battery protection
? Low Power Standby mode
? Adjustable PWM current limit
? Synchronous rectification
? Internal undervoltage lockout (UVLO)
? Crossover-current protection
Package: 16-pin TSSOP with exposed
thermal pad (suffix LP)
Description
Designed for pulse width modulated (PWM) control of two
DC motors, the A4954 is capable of peak output currents to
±2 A and operating voltages to 40 V.
Input terminals are provided for use in controlling 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 overcurrent protection,
motor lead short to ground or supply, thermal shutdown with
hysteresis, undervoltage monitoring of V BB , and crossover-
current protection.
The A4954 is provided in a low-profile 16-pin TSSOP package
with exposed thermal pad (suffix LP) that is lead (Pb) free,
with 100% matte tin leadframe plating.
Not to scale
Functional Block Diagram
Load Supply
IN1
IN2
Control
Logic
Disable
OSC
Charge
Pump
TSD
UVLO
VBB
OUT1
OUT2
7V
GND
LSS12
VREF12
÷ 10
(Optional)
IN3
IN4
Control
Logic
Disable
OSC
Charge
Pump
TSD
UVLO
VBB
OUT3
OUT4
7V
GND
LSS34
A4954-DS, Rev. 4
VREF34
÷ 10
(Optional)
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