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PT1101 - PWM/VFM Step-down DC-DC Controller

General Description

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.

Key Features

  • S.
  • Wide Range Of Input Voltage: High Efficiency: Typ. 90% Oscillation Frequency: 500kHz 2.3V~18V Built-in Soft-start and Protection Function.

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Datasheet Details

Part number PT1101
Manufacturer PowTech
File Size 408.44 KB
Description PWM/VFM Step-down DC-DC Controller
Datasheet download datasheet PT1101 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PT1101 PWM/VFM Step-down DC-DC Controller ƒ GENERAL DESCRIPTION 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.