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| 型号： | A3985SLDTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC MOSFET DRVR PROG DUAL 38TSSOP |
| 标准包装： | 1 |
| 配置： | 半桥 |
| 输入类型： | 非反相 |
| 延迟时间： | 120ns |
| 配置数： | 2 |
| 输出数： | 8 |
| 电源电压： | 12 V ~ 50 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-TFSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 38-TSSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 1141 (CN2011-ZH PDF) |
| 其它名称： | 620-1180-6 |
A3985
Digitally Programmable
Dual Full-Bridge MOSFET Driver
Features and Benefits
Description
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Serial interface for full digital control
Dual full-bridge gate drive for N-channel MOSFETs
Dual 6-bit DAC current reference
Operation over 12 to 50 V supply voltage range
Synchronous rectification
Cross-conduction protection
Adjustable mixed decay
Fixed off-time PWM current control
Low-current idle mode
The A3985 is a flexible dual full-bridge gate driver suitable
for driving a wide range of higher power industrial bipolar 2-
phase stepper motors or 2-phase brushless dc motors. It can
also be used to drive two individual torque motors or solenoid
actuators. Motor power is provided by external N-channel power
MOSFETs at supply voltages from 12 to 50 V.
Full digital control is provided by two serially-accessible
registers that allow programming of off-time, blank-time,
dead-time, mixed decay ratios, synchronous rectification,
master clock source selection, and division ratio and idle
mode. All internal timings are derived from a master clock
that can be generated on-chip or provided by an external
clock such as the system clock of the master controller. A
programmable divider allows for a wide range of external
Package: 38 pin TSSOP (suffix LD)
system clock frequencies.
The internal fixed off-time PWM current-control timing is
programmed via the serial interface to operate in slow, fast,
and mixed current-decay modes. The desired load-current level
and direction is set via the serial port with a direction bit and
two 6-bit linear DACs in conjunction with a reference voltage.
The seven bits of control allow maximum flexibility in torque
Continued on the next page…
Approximate size
Typical Application
3985-DS, Rev. 4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3986 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Dual Full-Bridge MOSFET Driver with Microstepping Translator |
| A3986_12 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Dual Full-Bridge MOSFET Driver with Microstepping Translator |
| A3986SLD-T | 制造商:Allegro MicroSystems 功能描述:DUAL FULL-BRIDGE MOSFET DRIVER WITH MICROSTEPPING TRANSLATOR 制造商:Allegro MicroSystems 功能描述:IC MOTOR DRIVER |
| A3986SLDTR-T | 功能描述:IC DRIVER MICROSTEPPING 38-TSSOP 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 |
| A3987 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:DMOS Microstepping Driver with Translator |
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