电机驱动芯片-A3909GLNTR-T-规格书-ALLEGRO电机驱动芯片规格书
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2023-10-14
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DESCRIPTION
The A3909 is a dual full bridge motor driver, designed for
12 V medium power applications. The outputs are rated for
operation through a power supply range of 4 to 18 V, and
capable of up to 1 A per phase.
Paralleling the outputs is possible for higher amperage single
DC motor applications.
The four inputs (IN1 to IN4) can control DC motors in forward,
reverse, brake, and coast modes, or a bipolar stepper motor in
full- and half-step modes.
The A3909 is supplied in a 10-pin MSOP package with exposed
thermal pad (suffix LY) and a 10-pin SSOP (suffix LN) for
wave solder applications. Both packages are lead (Pb) free
with 100% matte-tin leadframe plating.
A3909-DS, Rev. 3
MCO-0000529
FEATURES AND BENEFITS
• Low R
DS(on)
outputs
• Drives two DC motors or single stepper motor
• Low power standby (Sleep) mode with zero current drain
• Thermal shutdown protection
• Parallel operation option for 1.8 A, single DC motor
• Overcurrent protection:
▫Outputtosupplyshort
▫OutputtoGNDshort
▫Outputloadshort
Dual Full Bridge Motor Driver
PACKAGES:
Functional Block Diagram
Not to scale
A3909
Control
Logic
GND
OUT1
OUT2
VBB
VBB
VBB
IN1
IN2
Load Supply Load Supply
Configuration
for driving
2 DC motors
TSD
Disable
UVLO
OCP
Control
Logic
GND
OUT3
OUT4
VBB
IN3
IN
PAD
LY package
4
TSD
Disable
UVLO
OCP
OUT1
OUT2
VBB
Configuration
for parallel operation
at 1.8 A
OUT3
OUT4
GND
10-pin MSOP
with exposed thermal pad
(LY package)
10-pin SSOP
(LN package)
January 20, 2021
A3909是一款双全桥电机驱动器，专为12 V中功率应用而
设计。输出额定通过4至18v的电源范围运行，每相可达1a
。
并联输出可以用于更高安培的单直流电机应用。
四个输入(IN1到IN4)可以控制直流电机在前进，倒车，制动
和海岸模式，或双极步进电机在全步和半步模式。
A3909采用10引脚MSOP封装，带有外露热垫(后缀LY)和10
引脚SSOP(后缀LN)，用于波焊应用。两个封装都是无铅(Pb
)与100%哑锡引线框架电镀。
A3909-DS, Rev. 3
MCO-0000529
特点和优点
•驱动两个直流电机或单个步进电机•低功耗待机(睡眠)模
式，零电流损耗•热关机保护•1.8 A并联操作选项，单直
流电机•过流保护:
•驱动两个直流电机或单个步进电机•低功耗待机(睡眠)模
式，零电流损耗•热关机保护•1.8 A并联操作选项，单直
流电机•过流保护:
受限制的产出供不应求
受限制的输出到地短
受限制的输出负载不足
双全桥电机驱动器
功能框图
不成比例
控制逻
辑
负载供应 负载供应
配置驱动2个
直流电机
UVLO
(OCP
控制逻
辑
LY方案
UVLO
(OCP
1.8 A并联运行配置
10-pin MSOP
带外露热垫(LY封装)
10针SSOP (L
N封装)
2021年1月20日
翻译仅供参考，如需更准确的信息，请参考英文版
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