The ADI Chinese version datasheet is a translation of the English version datasheet, introducing the features and characteristics of ADI's ADP1621 constant frequency current mode boost DC/DC controller.
The document describes the ADP1621, a fixed-frequency pulse-width modulation (PWM) and current-mode boost converter controller designed to drive an external N-channel MOSFET. It can also be used with flyback, SEPIC, and forward converter topologies. The device features lossless current sensing for switch node voltages below 30 V and offers programmable switching frequencies between 100 kHz and 1.5 MHz via a single resistor. This manual is written in Chinese.
| Efficiency (without sense resistor) | 92% |
|---|---|
| Initial accuracy | ±1.0% |
| IC supply voltage range | 2.9 V to 5.5 V |
| Power input voltage (minimum) | 1.0 V |
| Shutdown current | 10 µA |
| Soft-start time | 2048 clock cycles |
| Switching frequency range | 100 kHz to 1.5 MHz |
The switching frequency can be set between 100 kHz and 1.5 MHz using a single external resistor.
Yes, it provides lossless current detection when the switch node voltage is less than 30 V.
The shutdown static current is lower than 10 µA.