CC6421
Features
- Built-in high sensitive hall sensor
- High efficiency,
- Zero Current Switch (ZCS) and Zero magnet Switch (ZBS)
- Low noise
- PWM speed control with minimal speed setting
- High output current, up to 800m A
- Wide operating voltage, 3.5V to 18V
- Rotation Detect (RD) and Frequency Generator (FG) are optional
- Protection: Thermal Protection, LRP (Lock Rotation Protection),
Current Limit Protection
- AGC control
- Intelligent Soft Start
- The rotational speed curve is configurable
- ESD (HBM) 6000V
Application
- Single Coil Brushless DC Motor
- Single Coil Brushless DC Fan
Block Diagram
VREF MINSP
2.5V
Bandgap Reference
10K ADC
Buffer
High Sensitivity Hall Plate pre Amplifer
Offset Cancelation
FG/RD
Current Limit
5V Regulator
Internal Oscillator
Power-On Reset
Signal Condition
PWM detection
MINSP Detection
Modulated PWM Duty...
