The MCP1825/MCP1825S is a 500mA low dropout (LDO) linear regulator that provides high current and low output voltages. The MCP1825 comes in a fixed or adjustable output voltage version, with an output voltage range of 0.8V to 5.0V. The 500mA output current capability, combined with the low output voltage capability, make the MCP1825 a good choice for new sub-1.8V output voltage LDO applications that have high current demands. The MCP1825S provides a fixed output voltage and low dropout voltage, making it suitable for applications requiring low current and low output voltage.
The MCP1825/MCP1825S series provides a 500 mA low‑dropout (LDO) linear regulator suitable for portable and high‑current applications. It offers an input voltage range of 2.1 V to 6.0 V, with fixed output versions at 0.8 V, 1.2 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V, and an adjustable version covering 0.8 V to 5.0 V. The device features low quiescent current (120 µA typical) and a shutdown pin that reduces supply current to less than 0.1 µA.
Key features include a fixed 110 µs power‑good delay, over‑temperature and short‑circuit protection, and compatibility with small ceramic output capacitors (1 µF). Typical applications are networking backplane cards, notebook computers, network interface cards, and other low‑voltage high‑current designs. The regulator is offered in TO‑263‑5 (DDPAK‑5), TO‑220‑5, SOT‑223‑5 for the MCP1825 and TO‑263‑3, TO‑220‑3, SOT‑223‑3 for the MCP1825S.
| Maximum Output Current | 500 mA |
|---|---|
| Input Operating Voltage Range | 2.1 V to 6.0 V |
| Adjustable Output Voltage Range | 0.8 V to 5.0 V |
| Low Dropout Voltage (at 500 mA) | 210 mV typical |
| Power‑Good Output Delay | 110 µs typ |
The regulator can deliver up to 500 mA of output current.
The typical dropout voltage is 210 mV when delivering 500 mA.
MCP1825 is offered in TO‑263‑5 (DDPAK‑5), TO‑220‑5, and SOT‑223‑5; MCP1825S is offered in TO‑263‑3 (DDPAK‑3), TO‑220‑3, and SOT‑223‑3.