The MCP1256/7/8/9 is a low-power, low-dropout 3.3V boost charge pump with sleep/bypass modes that can provide up to 100 mA of output current. The device features automatic 1.5x and 2x boost mode switching for high conversion efficiency. Additionally, in light load conditions, the MCP1256/7 can be set to sleep mode to further reduce the device's static current while maintaining a stable output. The MCP1258/9, on the other hand, provides a bypass mode that can connect the input voltage directly to the output. Thus, the MCP1258 or MPC1259 can provide bias voltage to real-time clocks, microcontrollers, or other system devices while consuming virtually no current.
The MCP1256/7/8/9 family are inductor‑less charge‑pump DC/DC converters that step 1.8 V‑3.6 V inputs up to a regulated 3.3 V output. They offer high voltage accuracy, low‑power sleep, bypass and shutdown modes, and protection against overheating and short circuits.
Typical applications include pagers, portable test equipment and home‑automation devices. The devices are available in 10‑pin DFN (3 mm × 3 mm) and 10‑pin MSOP packages and operate from –40 °C to +125 °C. This manual is written in Chinese.
| Output voltage | 3.3 V |
|---|---|
| Maximum output current | 100 mA |
| Switching frequency | 650 kHz |
| Input voltage range | 1.8 V to 3.6 V |
| Operating temperature range | -40 °C to +125 °C |
The device provides a regulated 3.3 V output.
It can deliver up to 100 mA of output current.
The converter operates with an input voltage from 1.8 V to 3.6 V.
It is rated for temperatures from –40 °C to +125 °C.