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:
I
O( 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
Vdd
5
DOB
4
Vdd 1
5 RD
AH293
7 DOB
4
SOT89-5L
293
( Front View )
1 : RD
2 : Vdd
3 : DO
4 : DOB
5 : GND
293
GND 2
1
RD
2
3
DO 3
1 2 3 4 5
SIP-5L
GND DO
SOT23-5
Pin Descriptions
Symbol
RD
Vdd
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
Packing
Blank : Bulk
A : Tape & Reel
(for SOT Packages Only)
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 1.1 Oct 5, 2005
1/9
ICT [ INTEGRATED CIRCUIT TECHNOLOGY CORP. ]
