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| 型号： | A4941GLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRIVER 3PH 16-TSSOP |
| 标准包装： | 1 |
| 系列： | * |
| 应用： | * |
| 输出数： | * |
| 电流 - 输出： | * |
| 电压 - 负载： | * |
| 电源电压： | * |
| 工作温度： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 16-TSSOP-EP |
| 包装： | 标准包装 |
| 其它名称： | 620-1357-6 |
A4941
Three-Phase Sensorless Fan Driver
Features and Benefits
? Sensorless (no Hall sensors required)
? Soft switching for reduced audible noise
? Minimal external components
? PWM speed input
? FG speed output
? Low power standby mode
? Lock detection
? Optional overcurrent protection
? Variant A automotive qualified to AEC-Q100 Grade 2
Package: 16-pin TSSOP with exposed
thermal pad (suffix LP)
Description
The A4941 three-phase motor driver incorporates BEMF
sensing to eliminate the requirement for Hall sensors in fan
applications.
A pulse wave modulated (PWM) input is provided to control
motor speed, allowing system cost savings by eliminating
external variable power supply. PWM input can also be used
as an on/off switch to disable motor operation and place the
IC into a low power standby mode.
The A4941 is provided in a 16-pin TSSOP package (suffix LP)
with an exposed thermal pad. It is lead (Pb) free, with 100%
matte tin leadframe plating.
Not to scale
Functional Block Diagram
12 V
0.1 μ F
10 μ F
VBB
+V INT
VCP
0.1 μ F
CP1
Charge
Pump
CP2
SLEW
PWM
Soft
Switch
Control
Logic
3-Phase
Half Bridges
OUTA
OUTB
OUTC
M
25 kHz
V BB
OSC
Timers
OCP
SENSE
0.167 Ω
O/C
10 k Ω
FC
TEST
FG
Startup
OSC
CDCOM
Adaptive
Commutation
Delay
FCOM
Sequencer
(Direction)
OUTA
OUTB
GND
CTAP
A4941-DS, Rev. 4
BEMF Comparator
OUTC
GND
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相关代理商/技术参数 |
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| A4942GESTR-T | 功能描述:IC MOTOR FAN DRIVER 3PHASE QFN 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:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| A4944GLPTR-T | 制造商:Allegro MicroSystems LLC 功能描述:IC FAN DVR BLDC HALL 16TSSOP |
| A4945GLJTR-T | 制造商:ALLEGRO 功能描述:Sensorless Sinusoidal Bldc Fan Driver w/Analog Speed Ctrl |
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| A4945KLJTR-T | 功能描述:IC FAN DRIVER BLDC 8SOIC 制造商:allegro microsystems, llc 系列:* 零件状态:有效 标准包装:3,000 |
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