Microsoft Word - AM4951_R_2 D1.4 120417
Document overview
- Manufacturer or author: fyang
- PDF pages: 14
Technical content
Features
- BTL Output Single-phase Full-wave Linear Drive (Gain Resistor=1k to 360k, 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=200mA)
- 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)
Applications
- Notebook, Personal Computers
- Power Supplies in Consumer Electronics, Car Audio and Office Peripherals
- CPU Cooling Systems
Figure 1. Package Types of AM4951/R/2
Figure 2. Pin Configuration of AM4951/R/2 (Top View)
Figure 3. Functional Block Diagram of AM4951/R/2
Apr. 2012 Rev. 1. 4 BCD Semiconductor Manufacturing Limited OBSOLETE – PART DISCONTINUED Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4951/R/2
Ordering Information
1: AM4951 1R: AM4951R 2: AM4952 G1: Green TR: Tape & Reel Blank: Tube Package MM: MSOP-8 MSOP-10 MP: PSOP-8 Package Temperature Range Output Signal Part Number Marking ID Packing Type MSOP-8 -40 to 105C FG AM4951MM-G1 4951MM-G1 Tube AM4951MMTR-G1 4951MM-G1 Tape & Reel RD AM4951RMM-G1 4951RMM-G1 Tube AM4951RMMTR-G1 4951RMM-G1 Tape & Reel PSOP-8 FG AM4951MP-G1 4951MP-G1 Tube AM4951MPTR-G1 4951MP-G1 Tape & Reel RD AM4951RMP-G1 4951RMP-G1 Tube AM4951RMPTR-G1 4951RMP-G1 Tape & Reel MSOP-10 FG & RD AM4952MM-G1 4952MM-G1 Tube AM4952MMTR-G1 4952MM-G1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. AM495 -
Apr. 2012 Rev. 1. 4 BCD Semiconductor Manufacturing Limited OBSOLETE – PART DISCONTINUED Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4951/R/2 Absolute Maximum Ratings (Note 1, TA=25ºC) Parameter Symbol Value Unit Supply Voltage VCC 28 V Peak Output Current IOUT 500 mA FG/RD Pull-up Voltage VFG/VRD 28 V FG/RD Output Current IFG/IRD 10 mA Thermal Resistance (Junction to Ambient) JA MSOP-8 205 °C/W PSOP-8 110 MSOP-10 195 Thermal Resistance (Junction to Case) JC MSOP-8 48 °C/W PSOP-8 36 MSOP-10 46 Power Dissipation PD MSOP-8 585 mW PSOP-8 960 mW MSOP-10 585 mW Operating Temperature TOP -40 to 125 ºC Storage Temperature TSTG -55 to 150 ºC 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 24 V Hall Input Voltage VICM 0 VCC-1.5 V Operating Ambient Temperature TA -40 105 ºC
Apr. 2012 Rev. 1. 4 BCD Semiconductor Manufacturing Limited OBSOLETE – PART DISCONTINUED Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4951/R/2
Electrical Characteristics
VCC=12V, TA=25oC, unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit Supply Current ICC1 VCT=L 3 6 9 mA ICC2 VCT=H 2.5 5 7.5 mA CT Charge Current ICHG 0.9 1.3 1.5 A CT Discharge Current IDHG 0.1 0.15 0.25 A CT Charge/Discharge Current Ratio RCT ICHG / IDHG 6 8 10 CT Clamp Voltage VCL 1.3 1.5 1.7 V CT Comparator Voltage VCP 0.3 0.5 0.7 V OUT Low Saturation Voltage VSAT_L IOUT=200mA 0.25 0.45 V OUT High Saturation Voltage VSAT_H IOUT=200mA 0.95 1.2 V Hall Input Sensitivity VHN 7 15 mV FG Low Level Voltage (For AM4951/2) VFG IFG=5mA 0.15 0.3 V FG Leakage Current (For AM4951/2) IFGL VFG=15V 1 30 A RD Low Level Voltage (For AM4951R/2) VRD IRD=5mA 0.15 0.3 V RD Leakage Current (For AM4951R/2) IRDL VRD=15V 1 30 A HB Voltage (For AM4952) VHB IHB=1mA 1.35 1.5 1.65 V
Figure 8. Power Dissipation vs. Ambient Temperature
power supply line, C1 will also be necessary to improve reliability. Its capacity should be larger than 2.2F. the value of R1 and R2 may achieve better startup characteristics and efficiency, even quiet operation. Note 4: This pin must be left open if unused. Note 5: 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. to be 2k and must be added when VCC is larger than 20V. Note 7: The package of AH920 is SOT-23-3. If it is packaged in TO-92S-3，please exchange IN- with IN+. Figure 9. Typical Application of AM4951/R
Figure 10. Typical Application of AM4952
Apr. 2012 Rev. 1. 4 BCD Semiconductor Manufacturing Limited OBSOLETE – PART DISCONTINUED Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4951/R/2 Mechanical Dimensions MSOP-8 Unit: mm(inch)
Apr. 2012 Rev. 1. 4 BCD Semiconductor Manufacturing Limited OBSOLETE – PART DISCONTINUED Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4951/R/2 Mechanical Dimensions (Continued) PSOP-8 Unit: mm(inch) 3.202(0.126) 3.402(0.134)
Apr. 2012 Rev. 1. 4 BCD Semiconductor Manufacturing Limited OBSOLETE – PART DISCONTINUED 6° 0.750(0.030) 0.950(0.037) 0.820(0.032) 1.100(0.043) Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4951/R/2 Mechanical Dimensions (Continued) MSOP-10 Unit: mm(inch) Note: Eject hole, oriented hole and mold mark is optional. 0.180(0.007) 0.280(0.011) 0.500(0.020) TYP 2.900(0.114) 3.100(0.122) 4.750(0.187) 5.050(0.199) 0.020(0.001) 0.150(0.006) 0.400(0.016) 0.800(0.031) 2.900(0.114) 3.100(0.122)
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