Holtek Semiconductor HT7991
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. The error amplifier noninverting| Part No. | HT7991 |
|---|---|
| Datasheet | HT7991 Download |
| Manufacturer |  Holtek Semiconductor |
| Description | 1MHz Asynchronous Step-up PWM Converter |
| Buy | Stock & Price |
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
A fixed 1MHz switching frequency has been chosen to permit smaller inductors to be used in the application circuit. The error amplifier noninverting
