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 • • • • • • • • • 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) • • • • Wide Operation Voltage Range Soft-switching for Low Noise Over Temperature Protection High ESD and Reliability Process Additional Available Materials • • • • Samples Data Sheet Reliability Report ESD Report Applications • • • 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