MB3785A_03 Datasheet, PDF (18/30 Pages) Fujitsu Component Limited. – Switching Regulator Controller (4 Channels plus High-Precision, High-Frequency Capabilities)

MB3785A
s TREATMENT WHEN NOT USING SCP
When you do not use the timer/latch-actuated short-circuiting protection circuit, connect the SCP terminal (pin
23) to GND with the shortest distance possible. Also, connect the comparator’s input terminal for each channel
to the VCC1 terminal (pin 18).
Figure 6. Treatment When Not Using SCP
18
VCC1
8 –IN1 (C)
13 –IN2 (C)
24 –IN3 (C)
29 –IN4 (C)
23
s OSCILLATOR FREQUENCY SETTING
The oscillator frequency can be set by connecting a timing capacitor (CT) to the CT terminal (pin 17) and a timing
resistor (RT) to the RT terminal (pin 16).
Oscillator frequency: fosc
fosc (kHz)
930000
CT(pF) RT(kΩ)
18