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P1888 - PWM CONTROL 3A STEP-DOWN CONVERTER

General Description

UTC P1888 consists of 3A step-down switching regulator control which includes a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc with PWM.

Key Features

  • S.
  • Soft-start, Current Limit, Enable function.
  • Thermal Shutdown function.
  • Built-in internal SW P-channel MOS.
  • Input voltage: 4V~23V.
  • Output voltage: 1.23V~VCC.
  • Duty ratio: 0% to 100% PWM control.
  • Oscillation frequency: 300KHz typ.

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Full PDF Text Transcription for P1888 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for P1888. For precise diagrams, and layout, please refer to the original PDF.

UNISONIC TECHNOLOGIES CO., LTD P1888 Preliminary PWM CONTROL 3A STEP-DOWN CONVERTER CMOS IC  DESCRIPTION UTC P1888 consists of 3A step-down switching regulator control w...

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PTION UTC P1888 consists of 3A step-down switching regulator control which includes a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc with PWM. UTC P1888 can provide low-ripple power, high efficiency, and excellent transient characteristics and an enable function, an over current protect function and a short circuit protect function are built inside, so the operation frequency will be reduced from 300KHz to 30KHz when OCP or SCP happens. And the PWM control circuit can vary the duty ratio linearly from 100 down to 0%. This converter also includes an error amplifier circuit as well as a

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