- 您现在的位置：买卖IC网 > PDF目录1772 > A1448EEWLT-P (Allegro Microsystems Inc)IC MOTOR DVR BLDC FULLBRDG MLP PDF资料下载
参数资料
| 型号： | A1448EEWLT-P |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 5/9页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DVR BLDC FULLBRDG MLP |
| 产品变化通告： | Pre-EOL Notice 07/Feb/2012 |
| 标准包装： | 1 |
| 应用： | DC 电机驱动器，无刷（BLDC） |
| 输出数： | 1 |
| 电流 - 输出： | ±200mA |
| 电源电压： | 1.8 V ~ 4.2 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-XFDFN 裸露焊盘 |
| 供应商设备封装： | 6-MLP/DFN 裸露焊盘（1.5x2） |
| 包装： | 标准包装 |
| 产品目录页面： | 1140 (CN2011-ZH PDF) |
| 其它名称： | 620-1274-6 |
Low-Voltage, Full-Bridge Brushless DC Motor Driver with
A1448
Integrated Hall Sensor IC, PWM Speed Control, Soft-Switching,
and Reverse Battery and Short Circuit Protection
Functional Description
Soft Switching
The A1448 device includes a soft-switching algorithm that
controls the output switching slew rate for both output pins. As a
result, the A1448 device is ideal for use in applications requiring
low audible switching noise and low EMI. The resistance of the
output transistors is controlled to ensure the smooth switching of
the outputs, as illustrated in figure 1.
CONTROL Pin Functionality: PWM, Braking, and Sleep
Mode Input
The CONTROL input pin accepts an external signal that can
control the speed of the output bridge, initiate active braking,
and put the device into sleep mode. Signals higher than the V INHI
threshold will turn on the output bridge according to the applied
magnetic field. Applying a PWM signal to the CONTROL pin
will turn the bridge on and off according to the PWM duty cycle.
When the CONTROL pin is pulled to GND, the device initiates
its internal active braking algorithm to stop the motor. After
braking, the device enters micro-power sleep mode. The device
becomes active again when the CONTROL pin is pulled higher
than V INHI .
Antistall Algorithm
If a stall condition occurs, the device will execute an antistall
algorithm to re-start the motor.
V OUT2
V OUT1
t SW
Figure 1. A1448 output soft switching with a 30 Ω resistive load
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
相关PDF资料 |
PDF描述 |
|---|---|
| A2550KLPTR-T | IC RELAY DRVR AUTO W/REG 16TSSOP |
| A3901SEJTR-T | IC MOTOR DRVR STEPPER DUAL 10MLP |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A144F060C0 | 制造商:Schurter Electronic Components 功能描述:CBE TA45-A144F060C0 - Bulk |
| A144F100C0 | 制造商:Schurter Electronic Components 功能描述:CBE TA45-A144F100C0 - Bulk |
| A144F150C0 | 制造商:Schurter Electronic Components 功能描述:CBE TA45-A144F150C0 - Bulk |
| A144F160C0 | 制造商:Schurter Electronic Components 功能描述:CBE TA45-A144F160C0 - Bulk |
| A144H050C0 | 制造商:Schurter Electronic Components 功能描述:CBE TA45-A144H050C0 - Bulk |
发布紧急采购，3分钟左右您将得到回复。