BCDSEMI AH9281Z5-G1

Product Brief
Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD
Description
Parametric Table
The AH9281/82 is a one-chip solution for driving
two-coil brushless DC motors and fans.
Supply Voltage (V)
Based on the advanced CDMOS process, the IC
contains a Hall-effect sensor, dynamic offset
correction and powerful output drivers with
1200mA peak output current capability.
Specially designed for driving large fans, the
device is optimized for low start-up voltage.
Frequency Generator or Rotation Detection is
available. The open drain output makes easier the
connectivity with any external interface such as
hardware monitoring or Super I/O IC.
The AH9281/82 is available in TO-95 and
SOT-89-5 packages.
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2.5 to 24
Output Saturation Voltage
(VCC=12V, IOUT=350mA) (V)
0.6
FG/RD Output Low Voltage
(VCC=12V, IFG=5mA) (V)
0.1
Supply Current (mA)
4
Output ON Time (S)
0.8
Output OFF Time (S)
5
Operating Point (Gauss)
20
Releasing Point (Gauss)
-20
Hysteresis (Gauss)
40
Benefits
Features
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AH9281/82
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High Sensitivity Integrated Hall Sensor
Low Start-up Voltage
5V, 12V and 24V Operation
Peak Output Current up to 1200mA
Power Efficient CMOS and Power MOSFETs
Built-in Output Protection Clamping Diode
Locked Rotor Shutdown and Auto-restart
Integrated Tachometer (AH9281) or Alarm
(AH9282) Signal Output
ESD Rating: 6000V (Human Body Model)
400V (Machine Model)
Minimum External Components
Low Startup Voltage
Locked Protection and Auto-restart
With FG or RD Output
Wide Operation Voltage Range
Excellent Temperature Performance
High Sensitivity for Switching Symmetry
High ESD and Power Efficient
Additional Available Materials
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Applications
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5V/12V/24V DC Brushless Motor/Fan
PC, Server, Laptop Cooling Fan
Power Supply Cooling Fan
Large or Small Fans
Mar. 2010
Samples
Preliminary Datasheet
Reliability Report
ESD Report
BCD Semiconductor Manufacturing Limited
1
Product Brief
Two Phase Dual-coil High Voltage Smart Fan Motor Driver with FG/RD
AH9281/82
Pin Configuration
Z5 Package
(TO-95)
R Package
(SOT-89-5)
GND
DOB
DO
FG/RD
VCC
5
4
3
2
1
DOB
DO
5
4
1
2
VCC
(Front View)
3
GND FG/RD
(Top View)
Ordering Information Example
Package
Temperature
Range
TO-95
Output
Signal
Part Number
Marking ID
Packing Type
FG
AH9281Z5-G1
9281Z5-G1
Bulk
RD
AH9282Z5-G1
9282Z5-G1
Bulk
FG
AH9281RTR-G1
G41C
Tape & Reel
RD
AH9282RTR-G1
G41D
Tape & Reel
-40 to 125°C
SOT-89-5
Detailed information please refer to the relevant datasheet.
Sales Office:
Shanghai
No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based
Industrial Park, 200241, China
Tel : 86-21-24162266
Fax : 86-21-24162277
USA
30920 Huntwood Ave. Hayward, CA 94544,
USA
Tel : +1-510-324-2988
Fax : +1-510-324-2788
Taiwan
4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei,
Taiwan
Tel : 886-2-2656-2808
Fax : 886-2-2656-2806
Shenzhen
Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S.,
Nanshan District, Shenzhen, China
Tel : 86-755-8826 7951
Fax : 86-755-8826 7865
Mar. 2010
BCD Semiconductor Manufacturing Limited
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