Description
Fig.1 Block diagram
PIN No Pin Name
Function
1
RMI Minimum Speed setting terminal
2
VL Hi duty slope setting terminal
3
VH Low duty slope setting terminal
4
VREF Reference voltage output terminal
5
PWM PWM signal input terminal
6
Signal 1 Signal output terminal
7
GND Ground terminal
Features
- s
1) Slope adjust mode for VH and VL pin control. 2) Soft switched drive. 3) PWM speed control. 4) Rotating speed pulse signal (FG) output. 5) Incorporating lock protection and automatic
restart circuit. 6) Power Tr incorporated. 7) Hall Bias voltage built-in. 8) Soft start function built-in for reducing power
up acoustic noise.
- Absolute Maximum Ratings (Ta = 25℃)
Parameter
Symbol
Limits
Unit
Supply voltage FG single output current FG single output voltage Vref output current HB ou.
AM5138 Datasheet
