The SC46208 is a high-efficiency, synchronous step-down DC-DC converter chip with a wide input voltage range, up to 600mA output current capability, peak current mode PWM control loop and compensation network internal integration, so that the SC46208 does not need external compensation components to provide stable output voltage in a wide load range, It is very suitable for applications such as portable devices powered by a single lithium battery.
The SC46208 is a miniature, flat‑pack synchronous buck converter designed for portable devices powered by a single Li‑ion cell. It operates from 2.5 V to 5.5 V input, provides a fixed‑frequency 1.25 MHz switching, and integrates the PMOS switch, NMOS synchronous rectifier, reference, and protection circuits, eliminating the need for external Schottky diodes.
Typical applications include cellular phones, PDAs, wireless communication modules, MP3 players, digital cameras and other battery‑operated instruments. The datasheet provides pin‑out details, electrical characteristics, recommended external components, and example schematics for both adjustable‑output and fixed‑output versions. This manual is written in Chinese.
| Input voltage range | 2.5 V – 5.5 V |
|---|---|
| Maximum output current | 600 mA |
| Switching frequency | 1.25 MHz |
| Efficiency | up to 95 % |
| Static current (light‑load power‑save mode) | 20 µA |
| Shutdown current | < 1 µA |
| Operating temperature range | -40 °C to +85 °C |
| Package | SOT‑23‑5 |
The device can deliver up to 600 mA of output current.
In light‑load power‑save mode the static current is only 20 µA.
The converter operates at a fixed 1.25 MHz switching frequency.
It accepts an input voltage from 2.5 V to 5.5 V.