AH293
Low Voltage Hall-Effect Smart Fan Motor Controller Features
- On chip Hall sensor - Rotor-locked shutdown - Auto...
AH293
Low Voltage Hall-Effect Smart Fan Motor Controller Features
- On chip Hall sensor - Rotor-locked shutdown - Automatically restart - Rotor-state detection (RD) output - Buil t-in Zener protection for output driver - Operating voltage: 1.8V~5.75 V - Output current: IO( AVE ) = 400 mA - Package: SIP-5L, SOT23-5L, SOT89-5L
General Description
AH293 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-collector
transistors for motor’s coil driving, automatic lock current shutdown, and recovery protections. Besides, rotor-state detection (RD) output is for speed detection. To avoid coil burning, rotor-lock shutdown detection circuit shut down the output driver if the rotor is blocked and then the automatic recovery circuit will try to restart the motor. These protecting actions are repeated and periodic during the blocked period. Until the blocking is removed, the motor recovers running normally.
Pin Configuration
RD 5 DOB 4
293
( Front View )
1 : RD 2 : VCC 3 : DO 4 : DOB 5 : GND
VCC 1
293
5 RD AH293 7 4 DOB SOT89-5L
GND 2
3
1
2
DO 3
1 2 3 4 5
SIP-5L
VCC GND DO SOT23-5
Pin Descriptions
Symbol RD VCC DO DOB GND Description Rotor-state detection Input power Output pin Output pin Ground
Ordering Information
AH293 X - X X X
Wafer Body Blank or A~Z : if necessary to specify
Package P: SIP-5L W: SOT23-5L Y: SOT89-5L
Lead L : Lead Free Blank: Normal
Packing Blank : Tube or Bulk A : Tape & Reel
This data...