BCDSEMI AM4951MP-G1

Product Brief
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Description
Parametric Table
The AM4951/R/2 series is a single-phase BTL
output fan motor driver designed by bipolar
process. This IC features high efficiency, silent
operation and includes lock shutdown and
automatic restart functions. When the motor is
under lock condition, the lock shutdown function
turns off the output current. When the
lock condition is removed, the IC will
restart automatically and allow DC fan to run. It is
applied for high reliability and low noise
application, such as personal computers, notebook,
car audio, CPU cooling systems and power
supplies in consumer electronics systems.
(VCC=12V, TA=25oC, unless otherwise noted.)
The AM4951/R series is available in MSOP-8
(12V application only) or PSOP-8 (24V
application only) package. The AM4952 is
available in MSOP-10 package.
Supply Current 1 (mA) (VCT=L)
6
Supply Current 2 (mA) (VCT=H)
5
Out Low Saturation Voltage (V)
0.25
Out High Saturation Voltage (V)
0.95
Hall Input Sensitivity (mV)
7
FG Low Level Voltage (V)
(For AM4951/2)
0.15
RD Low Level Voltage (V)
(For AM4951R/2)
0.15
HB Voltage (V)
(For AM4952)
1.5
Features
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Benefits
BTL
Output
Single-phase
Full-wave
Linear Drive (Gain Resistor=1k to 360kΩ,
Gain=51dB)
Support Low-voltage Drive and Feature a
Wide Usable Voltage Range (2.2V to 24V)
Low Saturation Output (High Side and Low
Side Saturation Voltage): VSAT_TOTAL=1.2V
(typical, IOUT=250mA)
Built-in Lock Protection and Automatic
Restart Circuits
Built-in FG/RD Output
Built-in Hall Sensor Bias (AM4952 Only,
VHB=1.5V)
Thermal Protection Circuit
Small-sized, High Thermal Capacity Package
FG Output (AM4951),
RD Output
(AM4951R), FG and RD Output (AM4952)
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Wide Operation Voltage Range
Soft-switching for Low Noise
Over Temperature Protection
High ESD and Reliability Process
Additional Available Materials
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Samples
Data Sheet
Reliability Report
ESD Report
Applications
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Notebook, Personal Computers
Power Supplies in Consumer Electronics, Car
Audio and Office Peripherals
CPU Cooling Systems
Jun. 2010
BCD Semiconductor Manufacturing Limited
1
Product Brief
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Pin Configuration
MM Package
(MSOP-8)
MP Package
(PSOP-8)
For AM4951/R 12V Application
For AM4951/R 24V Application
MM Package
(MSOP-10)
For AM4952
Jun. 2010
BCD Semiconductor Manufacturing Limited
2
Product Brief
BTL Drive Single-phase Full-wave Fan Motor Driver
AM4951/R/2
Ordering Information Example
Package
Temperature
Range
Output
Signal
FG
MSOP-8
RD
-40 to 105°C
FG
PSOP-8
RD
MSOP-10
FG & RD
Part Number
Marking ID
Packing
Type
AM4951MM-G1
4951MM-G1
Tube
AM4951MMTR-G1
4951MM-G1
Tape & Reel
AM4951RMM-G1
4951RMM-G1
Tube
AM4951RMMTR-G1
4951RMM-G1
Tape & Reel
AM4951MP-G1
4951MP-G1
Tube
AM4951MPTR-G1
4951MP-G1
Tape & Reel
AM4951RMP-G1
4951RMP-G1
Tube
AM4951RMPTR-G1
4951RMP-G1
Tape & Reel
AM4952MM-G1
4952MM-G1
Tube
AM4952MMTR-G1
4952MM-G1
Tape & Reel
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
Jun. 2010
BCD Semiconductor Manufacturing Limited
3