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HT7991

Holtek Semiconductor
Part Number HT7991
Manufacturer Holtek Semiconductor
Description 1MHz Asynchronous Step-up PWM Converter
Published May 12, 2018
Detailed Description HT7991 2.5A Peak Current, 1MHz Asynchronous Step-up PWM Converter Features • Input Voltage from 2.6V to 5.5V • Adjust...
Datasheet PDF File HT7991 PDF File

HT7991
HT7991

Overview
HT7991 2.
5A Peak Current, 1MHz Asynchronous Step-up PWM Converter 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 Applications • All Single Cell Li or Dual Cell Battery Application • Portable Equipment/Handheld Devices 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.
The error amplifier noninverting ...


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