REG711 is a Schneider Electric 50mA switched capacitor DC/DC converter with a wide input range, automatic step-up/step-down operation, low input current ripple, low output voltage ripple, minimum external components (no inductors), and “shutdown” mode. It provides five output voltages: 5.0V, 3.3V, 3.0V, 2.7V, and 2.5V. It is used in smart card readers, phones, SIM card supplies, portable communication devices, personal digital assistants, modems, notebook and palm-top computers, electronic games, handheld meters, PCMCIA cards, card buses, and LCD displays.
The REG711 switched‑capacitor charge pump provides regulated output voltages from 2.5 V to 5.0 V while accepting a broad input range of 1.8 V to 5.5 V. It operates in automatic step‑up or step‑down mode, requires no inductors, and includes thermal shutdown and current‑limit protection.
The datasheet lists detailed specifications, pin configuration, typical performance curves, capacitor selection guidelines, and recommended PCB layout. Package information for the MSOP‑8 version and ordering details are also provided.
| Input voltage range | 1.8 V to 5.5 V |
|---|---|
| Nominal output current | 50 mA |
| Oscillator frequency | 1.0 MHz |
| Thermal shutdown temperature | 160 °C |
The REG711 operates with an input voltage from 1.8 V up to 5.5 V.
Efficiency can reach about 90 % at a 50 mA load with a 2.7 V output.
The device shuts down when the junction temperature reaches approximately 160 °C.