BCD Semiconductor Manufacturing Limited AM4961
The AM4961 is a full wave driver IC with PWM control function. It is used for single phase motor and is capable of speed control by changing output duty cycle. AM4961 Features · · · · · · · · Built-in Hall Bias Circuit Built-in PWM Speed Control Circuit Built-in Minimal Speed Setup Circuit Rotation Speed Indication (FG) Rotation or Lock State Indication (RD) Built-in Thermal Shutdown Circuit Lock Protection Output Current Limit The AM4961 is available in...GENERAL DESCRIPTION
AM4961FEATURES
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● Built-in Hall Bias Circuit Built-in PWM Speed Control Circuit Built-in Minimal Speed Setup Circuit Rotation Speed Indication (FG) Rotation or Lock State Indication (RD) Built-in Thermal Shutdown Circuit Lock Protection Output Current Limit The AM4961 is available in TSSOP-20(EDP) and HTSSOP-14 packages. Application
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● CPU Cooler Fan in PC Brushless DC Motor Driver TSSOP-20(EDP) HTSSOP-14 Figure 1. Package Types of AM4961 Jun. 2008 Rev. 2. 2 1 BCD Semiconductor Manufacturing Limited Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER Pin Configuration G Package (TSSOP-20(EDP)) AM4961 PGND PGND PGND OUT2 VCC VMIN VPWM COSC FG RD 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 PGND PGND PGND OUT1 GND CT VREF HINHB HIN+ Jun. 2008 Rev. 2. 2 2 BCD Semiconductor Manufacturing Limited Data Sheet SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER Pin Configuration (Continued) AM4961 GH Package (HTSSOP-14) PGND PGND OUT2 VCC VMIN VPWM COSC FG RD 1 2 3 4 5 6 7 14 13 12 11 10 9 8 OUT1 GND CT VREF HINHB HIN+ Figure 2.