U3525 Description
The UTC U3525 is a pulse width modulator IC and designed for switching power supplies application to improve performance and reduce external parts usage. A shutdown terminal controls both the soft-start circuitry and the output stages, providing instantaneous turn off through the PWM latch with pulsed shutdown, as well as soft-start recycle with longer shutdown mands.
U3525 Key Features
- FEATURES
- Input Voltage: 8~35V
- On-chip +5.1V reference is trimmed to ±1%
- 100HZ ~ 400KHZ oscillator range
- Separate oscillator sync terminal
- Adjustable dead time control
- Internal soft-start
- Pulse-by-pulse shutdown
- Input under-voltage lockout with hysteresis
- Latching PWM to prevent multiple pulses