HT77S11 Overview
Block Diagram Note: * The FB pin is connected to an external resistive divider, OUT or GND pins to set the output voltage. Pin Assignment Pin No. Pin Name Feedback Input Pin. This pin is used to select the required output voltage. It can be connected to an external resistor divider for a user selected voltage or to either the OUT or GND pins for a fixed voltage. GND: 5V output OUT: 3.3V output Resistor Divider: 1.8V~5.5V range output Low-Battery parator Input Pin. This pin is connected to the internal low battery voltage parator. If the voltage on this pin is less than the REF voltage - nominally 1.3V - then the LBO output will be low. Open-Drain Low Battery parator Output. This pin is used to indicate a low battery condition and is connected to the low battery voltage parator output. Note that the pin will be in a high impedence
HT77S11 Key Features
- Low start-up voltage: 0.7V (Typ.)
- High efficiency: HT77S10: 91% (Typ.)
- Low ripple and low noise
- Ultra low supply current: 20mA (Typ.)
- Low shutdown current: 1mA (Max.)
- Built-in voltage detector
- 8-pin MSOP/SOP packages
- High output voltage accuracy: ±4%
- Output voltage: 3.3V, 5.0V or Adjustable
HT77S11 Applications
- The FB pin is connected to an external resistive divider, OUT or GND pins to set the output voltage