Functional Block Diagram (Note 3)
AH5795
SINGLE PHASE HALL EFFECT LATCH SMART
FAN MOTOR CONTROLLER
Vdd
Power
Lock Detect,
FG
Shutdown and
Frequency
Automatic Re-Start
Generator
PWM
Hall
Sensor
AMP
Vss
O1
Logic
Block
Soft
Switching
Control
Full Bridge
Driver
O2
Notes:
3. The AH5795 has an open-drain tachometer FG output that follows the magnetic change frequency. Typically a pull-up resistor of 10KΩ is
recommended from FG pin to the supply voltage.
AH5795
Document number: DS35277 Rev. 1 - 2
3 of 13
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