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HT7991 - 1MHz Asynchronous Step-up PWM Converter

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General Description

The HT7991 is a current mode asynchronous stepup DC-DC converter.

The fully integrated power MOSFET transistor, with its 0.2Ω drain source resistance, ensures a high level of device power efficiency.

A fixed 1MHz switching frequency has been chosen to permit smaller inductors to be used in the application circuit.

Overview

HT7991 2.5A Peak Current, 1MHz Asynchronous Step-up PWM Converter.

Key Features

  • Input Voltage from 2.6V to 5.5V.
  • Adjustable Output Voltage Up to 12V.
  • Internal 0.2Ω Low Power Switch.
  • Fixed PWM Switching Frequency: 1MHz.
  • Precision Feedback Reference Voltage: 0.6V (±2%).
  • Ultra Low Shutdown Current: 0.1μA.
  • Embedded Loop Frequency Compensation.
  • Programmable OCP Threshold via External Resistor, ROC.
  • Complete Protections: Soft Start , UVLO, OCP, OTP and OVP.
  • Package Type: SOT23-6.

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