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AH293 Datasheet Preview

AH293 Datasheet

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER

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AH293 pdf
Low Voltage Hall-Effect Smart Fan Motor Controller
AH293
„ 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
„ Pin Configuration
„ 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.
293 ( Front View )
1 : RD
2 : VCC
3 : DO
4 : DOB
5 : GND
123 45
SIP-5L
„ Pin Descriptions
RD DOB
54
293
123
VCC GND DO
SOT23-5
VCC 1
5 RD
GND 2 AH293
DO 3
74 DOB
SOT89-5L
Symbol
RD
VCC
DO
DOB
GND
„ Ordering Information
Description
Rotor-state detection
Input power
Output pin
Output pin
Ground
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 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. 0.5 Jun 18, 2004
1/9



Anachip
Anachip

AH293 Datasheet Preview

AH293 Datasheet

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER

No Preview Available !

AH293 pdf
Low Voltage Hall-Effect Smart Fan Motor Controller
„ Block Diagram (SIP5)
VCC
2
Regulator
Lock shutdown
and
Automatic recovery
Hall
Plate
Amp.
Control Logic
AH293
3 DO
4 DOB
5
GND
1
RD
„ Typical Application Circuit
Vcc
(1.8V/5.75V)
R pu
RD
(alarm)
D1
293
Coil2
1 2345
GND
+
C1
10uF
Coil1
1.8V/5.75V DC Brush-less Fan with RD output function
Anachip Corp.
www.anachip.com.tw
Rev 0.5 Jun 18, 2004
2/9


Part Number AH293
Description LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
Maker Anachip
Total Page 9 Pages
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