Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver General Description Features The AM4953 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. • • • • • • • • The AM4953 is available in MSOP-10, SSOP-10, MSOP-8, SOIC-8 and PSOP-8 packages. 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 16V) Low Saturation Output (High Side and Low Side Saturation Voltage): VSAT_TOTAL=1.2V (typical, IOUT=300mA) Built-in Lock Protection and Automatic Restart Circuits Built-in FG/RD Output Built-in Hall Sensor Bias (VHB=1.45V) Thermal Protection Circuit Small-sized, High Thermal Capacity Package Applications • • • MSOP-10 AM4953 Notebook, Personal Computers Power Supplies in Consumer Electronics, Car Audio CPU Cooling Systems SSOP-10 SOIC-8 MSOP-8 PSOP-8 Figure 1. Package Types of AM4953 Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 1 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Pin Configuration MM Package M8 Package (MSOP-10) (MSOP-8) IN+ 1 10 RD HB 2 9 FG IN- 3 8 VCC CT 4 7 OUT2 OUT1 5 6 GND IN+ 1 8 RD IN- 2 7 VCC CT 3 6 OUT2 OUT1 4 5 GND GS Package (SSOP-10) IN+ 1 10 RD HB 2 9 FG IN- 3 8 VCC CT 4 7 OUT2 OUT1 5 6 GND M Package MP Package (SOIC-8) (PSOP-8) IN+ 1 8 FG/RD IN+ 1 8 FG IN- 2 7 VCC IN- 2 7 VCC CT 3 6 OUT2 CT 3 6 OUT2 OUT1 4 5 GND OUT1 4 5 GND Figure 2. Pin Configuration of AM4953 (Top View) Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 2 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Functional Block Diagram Figure 3. Functional Block Diagram of AM4953 Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 3 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Ordering Information AM4953 - Circuit Type G1: Green Output Signal: Blank: FG&RD/RD F: FG TR: Tape & Reel Blank: Tube Package: MM: MSOP-10 GS : SSOP-10 M8: MSOP-8 M: SOIC-8 MP: PSOP-8 Package Temperature Range Output Signal MSOP-10 FG & RD SSOP-10 FG & RD MSOP-8 RD -40 to 105ºC RD SOIC-8 FG PSOP-8 FG Part Number Marking ID Packing Type AM4953MM-G1 4953MM-G1 Tube AM4953MMTR-G1 4953MM-G1 Tape & Reel AM4953GS-G1 4953GS-G1 Tube AM4953GSTR-G1 4953GS-G1 Tape & Reel AM4953M8-G1 4953M8-G1 Tube AM4953M8TR-G1 4953M8-G1 Tape & Reel AM4953M-G1 4953M-G1 Tube AM4953MTR-G1 4953M-G1 Tape & Reel AM4953FM-G1 4953FM-G1 Tube AM4953FMTR-G1 4953FM-G1 Tape & Reel AM4953FMP-G1 4953FMP-G1 Tube AM4953FMPTR-G1 4953FMP-G1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 4 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Absolute Maximum Ratings (Note 1, TA=25ºC) Symbol Value Unit Supply Voltage VCC 20 V Peak Output Current IOUT 800 mA FG/RD Pull-up Voltage VFG/VRD 15 V FG/RD Output Current IFG/IRD 10 mA Parameter Thermal Resistance (Junction to Ambient) Thermal Resistance (Junction to Case) θJA θJC MSOP-10 195 MSOP-8 205 SSOP-10 155 SOIC-8 160 PSOP-8 110 MSOP-10 46 MSOP-8 48 SSOP-10 39 SOIC-8 40 PSOP-8 36 MSOP-10 PD °C/W 585 MSOP-8 Power Dissipation °C/W SSOP-10 800 SOIC-8 780 PSOP-8 960 mW Operating Temperature TOP -40 to 125 ºC Storage Temperature TSTG -55 to 150 ºC ESD (Human Body Model) ESD 4000 V ESD (Machine Model) ESD 200 V Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Max Unit Supply Voltage VCC 2.2 16 V Hall Input Voltage VICM 0 VCC-1.5 V TA -40 105 ºC Operating Ambient Temperature Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 5 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Electrical Characteristics VCC=12V, TA=25oC, unless otherwise specified. Parameter Supply Current Symbol Conditions Min Typ Max Unit ICC1 VCT=L 6 8 9.6 mA ICC2 VCT=H 2 4 6 mA CT Charge Current ICHG 1 1.7 2.5 µA CT Discharge Current IDHG 0.15 0.27 0.36 µA CT Charge/Discharge Current Ratio RCT 5 7 10 CT Clamp Voltage VCL 1.25 1.45 1.65 V CT Comparator Voltage VCP 0.25 0.45 0.65 V ICHG / IDHG OUT Low Saturation Voltage VSAT_L IOUT=300mA 0.25 0.45 V OUT High Saturation Voltage VSAT_H IOUT=300mA 0.95 1.3 V 8 20 mV Hall Input Sensitivity VHN FG Low Level Voltage VFG IFG=5mA 0.15 0.3 V FG Leakage Current IFGL VFG=15V 1 10 µA RD Low Level Voltage VRD IRD=5mA 0.15 0.3 V RD Leakage Current IRDL VRD=15V 1 10 µA HB Voltage VHB IHB=5mA 1.45 1.6 V Apr. 2012 Rev. 1. 5 1.3 BCD Semiconductor Manufacturing Limited 6 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Typical Performance Characteristics 14 10 12 VCC=12V 8 ICC1 (VCT=L) 10 ICC (mA) ICC (mA) 6 4 o TA=25 C ICC2 (VCT=H) 8 6 4 ICC1 (VCT=L) 2 2 ICC2 (VCT=H) 0 0 0 5 10 15 -40 20 -25 0 25 75 100 125 o Figure 4. ICC vs. VCC Figure 5. ICC vs. TA 800 2.0 o VCC=12V,TA=25 C 700 VSATH 1.6 Package: MSOP-10/MSOP-8 600 PD (mW) VSATL VSAT (V) 50 TA ( C) VCC (V) 1.2 0.8 500 400 300 200 0.4 100 0 0.0 0 200 400 600 -40 800 0 25 50 75 100 125 150 o Figure 6. VSAT vs. IOUT Apr. 2012 -25 TA ( C) IOUT (mA) Figure 7. PD vs.TA Rev. 1. 5 BCD Semiconductor Manufacturing Limited 7 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Typical Performance Characteristics (Continued) 1000 900 Power Dissipation (mW) 800 PD (mW) Package: SOIC-8 Package: SSOP-10 600 400 200 750 600 450 300 150 0 0 -25 0 25 50 75 100 125 -50 150 -25 0 25 50 75 100 125 150 O Ambient Temperature ( C) o TA ( C) Figure 8. PD vs.TA Figure 9. PD vs.TA 1200 1050 Power Dissipation (mW) Package: PSOP-8 900 750 600 450 300 150 0 -50 -25 0 25 50 75 100 125 150 O Ambient Temperature ( C) Figure 10. PD vs.TA Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 8 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Truth Table Items IN- IN+ 1 H L 2 L H 3 Apr. 2012 CT L H OUT1 OUT2 FG H L L L H H Off OFF Rev. 1. 5 RD Mode L Purring Rotation H Lock Protection BCD Semiconductor Manufacturing Limited 9 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Typical Application VRD VFG R1 HB R2 (Note 4) RD IN+ FG HALL D1 VCC IN- AM4953 CT OUT2 C2 C1 (Note 2) GND OUT1 L VRD VFG D1 R1 R3 C1 VCC (Note 4) RD HB FG IN- OUT1 AM4953 (Note 5) AH921 IN+ OUT2 CT GND R2 (Note 4) L C2 Note 2: Adding D1 can protect the IC from destruction by reverse connection. If D1 is used, it is necessary to insert a capacitor C1 to provide a regenerative current route. Similarly, if there is no nearby capacitor on the fan power supply line, C1 will also be necessary to improve reliability. Its capacity should be larger than 2.2µF. Note 3: If the line between Hall sensor output and Hall sensor input of IC is long, the noise may occur in this line. But it can be eliminated by adding a capacitor C3. Note 4: Each of R1 and R2 is recommended to be 51kΩ typical. R3 is recommended to be 2k and must be added when VCC is larger than 20V. Note 5: The package of AH921 is SOT-23-3. If it is packaged in TO-92S-3，please exchange IN- with IN+. Figure 11. Typical Application of AM4953 Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 10 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Mechanical Dimensions MSOP-10 Apr. 2012 Rev. 1. 5 Unit: mm(inch) BCD Semiconductor Manufacturing Limited 11 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Mechanical Dimensions (Continued) SSOP-10 1.350(0.053) 1.550(0.061) 3.800(0.150) 4.000(0.157) 0.300(0.012) 0.450(0.018) Unit: mm(inch) 4.700(0.185) 5.100(0.201) 1.000(0.039) BSC 0.100(0.004) 0.250(0.010) 5.800(0.228) 6.200(0.244) 1.350(0.053) 1.750(0.069) 0.400(0.016) 1.270(0.050) 0 8 0.170(0.007) 0.250(0.010) Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 12 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Mechanical Dimensions (Continued) MSOP-8 Apr. 2012 Rev. 1. 5 Unit: mm(inch) BCD Semiconductor Manufacturing Limited 13 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Mechanical Dimensions (Continued) SOIC-8 4.700(0.185) 5.100(0.201) 7° Unit: mm(inch) 0.320(0.013) 1.350(0.053) 1.750(0.069) 8° 8° 7° 0.675(0.027) 0.725(0.029) D 5.800(0.228) 1.270(0.050) 6.200(0.244) TYP D 20:1 0.800(0.031) 0.300(0.012) R0.150(0.006) 0.100(0.004) 0.200(0.008) 0° 8° 1.000(0.039) 3.800(0.150) 4.000(0.157) 0.330(0.013) 0.190(0.007) 0.250(0.010) 1° 5° 0.510(0.020) 0.900(0.035) R0.150(0.006) 0.450(0.017) 0.800(0.031) Note: Eject hole, oriented hole and mold mark is optional. Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 14 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Mechanical Dimensions (Continued) Unit: mm(inch) 3.202(0.126) 3.402(0.134) PSOP-8 Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 15 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any IMPORTANT NOTICE IMPORTANT NOTICE particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. 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