- 您现在的位置：买卖IC网 > PDF目录1772 > A3901SEJTR-T (Allegro Microsystems Inc)IC MOTOR DRVR STEPPER DUAL 10MLP PDF资料下载
参数资料
| 型号： | A3901SEJTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRVR STEPPER DUAL 10MLP |
| 标准包装： | 1 |
| 应用： | 直流电机驱动器，步进电机驱动器 |
| 输出数： | 2/1 |
| 电流 - 输出： | 300mA |
| 电压 - 负载： | 2.5 V ~ 5.5 V |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN/MLP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | 620-1159-6 |
A3901
Dual Full Bridge Low Voltage Motor Driver
Functional Description
Device Operation. The A3901 is a dual full-bridge
low voltage motor driver capable of operating one
stepper motor or up to two DC motors. MOSFET
output stages substantially reduce the voltage drop
and the power dissipation of the outputs of the A3901
compared to typical drivers with bipolar transistors.
Internal circuit protection includes thermal shutdown
with hysteresis, clamp diodes, and crossover current
protection.
The A3901 is designed for portable applications with a
power-off (Sleep mode) current of 50 nA typical, and
an operating voltage of 2.5 to 5.5 V. The A3901 logic
inputs are 3 to 5 V logic compatible.
Output current can be regulated by pulse width modu-
lating (PWM) the inputs. The full-bridge outputs
can be paralleled for higher-current applications (see
figure 6).
In conditions where the logic supply voltage drops
below 2.5 V, both the sink and the source R DS(on) will
increase beyond the specified values. In extreme cases,
no power will be delivered to the motor(s). However,
the device will not be damaged.
In stepping operation, the device can drive in either
full- or half-step mode. The stepping mode is set by
the signal pattern on the IN x terminals, as shown in
the stepping timing diagrams.
External PWM. Pulse width modulating the inputs
allows the output current to be regulated. Slow decay
mode is achieved by holding one input high while
PWMing the other input. Holding one input low and
PWMing the other input results in fast decay. See the
External PWM diagram.
Sleep Mode. Pulling all inputs to 0.5 V or less, sends
the A3901 into Sleep mode, during which it draws
50 nA typical.
Thermal Shutdown. The A3901 will disable the
outputs if the junction temperature reaches 165°C.
When thermal shutdown is entered, after the junction
temperature drops 15°C, the outputs will be re-en-
abled.
Brake Mode. When driving DC motors, the A3901
will go into Brake mode (turn on both sink drivers)
when all inputs, IN x , are logic 1. There is no protec-
tion during braking, so care must be taken to ensure
that the peak current during braking does not exceed
the absolute maximum current.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
7
相关PDF资料 |
PDF描述 |
|---|---|
| A3903EEETR-T | IC MOTOR DRIVER DC LV 8-DFN |
| A3904ECGTR | IC VOICE COIL MOTOR DVR 6-WLCSP |
| A3906SES-T | IC DVR DC/STEPPER MOTOR DUAL |
| A3908EEETR-T | IC MOTOR DRIVER DC LV 500MA 8DFN |
| A3918SESTR-T | IC MOTOR DRIVER DC 16QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A3901SEJTR-T | 制造商:Allegro MicroSystems 功能描述:Motor Driver IC |
| A3903 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Low Voltage DC Motor Driver |
| A3903EEETR-T | 功能描述:IC MOTOR DRIVER DC LV 8-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:步进电机驱动器，1-2 相，2 相 评估套件:- 输出数:1 电流 - 输出:800mA 电压 - 负载:10 V ~ 28 V 电源电压:4.75 V ~ 5.25 V 工作温度:-20°C ~ 90°C 安装类型:表面贴装 封装/外壳:28-SOP + 2 翼片裸露焊盘 供应商设备封装:28-HSOPHC（15.2x7.9） 包装:剪切带 (CT) 其它名称:869-1268-1 |
| A3903EEETR-T-CUT | 制造商:Allegro MicroSystems LLC 功能描述: |
| A3904 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Low Voltage Voice Coil Motor Driver |
发布紧急采购，3分钟左右您将得到回复。