PWM/VFM Step-Down DC/DC Controller

The PT1101 Series are CMOS-based PWM Step-down DC/DC Controllers with low supply current. A low ripple, high efficiency Step-down DC/DC converter CAN be easily composed of with additional several external components such as a power-transistor, an inductor, a Diode and capacitors. Output voltage is fixed or CAN be adjusted with external resisters. (PWM/VFM alternative circuit is disabled in adjustable types) The PT1101 Series consist of a PWM control circuit, a high precision band-gap voltage reference, a soft-start circuit, a protection circuit, a PWM/VFM alternative circuit, an Oscillator an error Amplifier with internal compensation network and input/output voltage detection circuits. By China Resources Powtech (Shanghai) Co., Ltd
PT1101 's PackagesPT1101 's pdf datasheet

PT1101 Pinout will be updated soon..., now you can download the pdf datasheet to check the pinouts !
PT1101 Application circuits
PT1101 circuits
This is one application circuit of PT1101,If you need more circuits,please download PT1101's pdf datasheet.

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