SA276
DESCRIPTION
SA276 mainly designed for electronic mutation of brush-less DC fan. This IC internally includes the Hall Plate, Regulator, Pre-Amplifier, parator, and a pair of plementary open-collector Outputs (DO, DOB).
SA276 internally includes power-reverse protecting diode, the protecting diode only protects chips but not for coils. If necessary, add one external diode to block the reverse current from coils.
- 94
FEATURES
- On-chip hall sensor
- Wide operating voltage: 3.5V to 20V
- 400m A (avg) output sink current
- Build-in power-reverse protecting diode only for reverse power connecting
ORDERING INFORMATION
Device SA276
Package TO-94
APPLICATIONS
- Dual coils brush-less DC fan
- Dual coils brush-less DC motor
- Revolution counting
- Speed measurement
BLOCK DIAGRAM
VCC 1
Hall
PRE AMP
2 DO 4 GND 3 DOB
ABSOLUTE MAXIMUM RATINGS (Tamb=25°C)
Characteristics Supply Voltage Reverse Vcc Polarity...
