description

The accuracy of the chip +5.1V reference voltage is 1. Because the reference voltage is within the input common-mode range of the error amplifier, there is no need for an external resistor. 3525 can work in master-slave mode and can also be synchronized with external clock. The dead time can be adjusted by the resistance between CT and discharge terminal. Other functional circuits inside the chip also include: soft start circuit, turn-off circuit and under-voltage circuit.

3525 The output stage of the control chip is a high-power totem-pole output, and its source current and sink current exceed 150mA, which gives a logic level of NOR and a low level when it is in the off state. trait

? The working voltage range is 8~35V;

? 5.1V reference voltage with accuracy of 1;

? The oscillation frequency range is 100Hz~500KHz;

? The oscillator synchronization signal input end;

? Dead time is adjustable;

? Built-in soft start circuit;

? Step-by-step pulse shutdown;

? Input undervoltage locking with hysteresis voltage;

? PWM locking function, prohibiting multi-pulse;