HT77xxFA
Low Power 200mA Synchronous Step-up Converter
General Information
The HT77xxFA series is a set of synchronous step-up DC-DC converters with high efficiency. With a low start-up voltage, the devices are suitable for 1-cell alkaline battery applications. CMOS technology ensures ultra low supply current to extend power endurance for portable products. The devices require only three external components to provide a fixed output voltage of 2.7V, 3.0V, 3.3V, 3.7V or 5.0V.
In order to save PCB layout area, these devices use synchronous topology integrated schottky diode, and also use 3-pin SOT89, 3-pin SOT23 and 5-pin SOT23 packages. For the 5-pin SOT23 package, it also includes a chip enable function to reduce power consumption during the shutdown mode.
Feature Details
| Attribute | Value |
|---|---|
| Ultra low supply current | 4μA |
| Low ripple and low noise | Available |
| High efficiency up to 95% | Available |
| Fixed output voltage | 2.7V, 3.0V, 3.3V, 3.7V, 5.0V |
| High output voltage accuracy | ±2% |
| Output current | Up to 200mA @ 0.6×VOUT≤VIN≤VOUT |
| Low shutdown current | 0.1μA (Typ.) |
| Package types | 3-pin SOT89, 3-pin SOT23 and 5-pin SOT23 |
Resources
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