The MCP1827/MCP1827S is a 1.5A Low Dropout (LDO) linear regulator that provides high current and low output voltages. The MCP1827 comes in a fixed or adjustable output voltage version, with an output voltage range of 0.8V to 5.0V. The 1.5A output current capability, combined with the low output voltage capability, make the MCP1827 a good choice for new sub-1.8V output voltage LDO applications that have high current demands. The MCP1827S is a 3-pin fixed output voltage version, with an output voltage range of 0.8V to 5.0V.
The MCP1827/MCP1827S is a 1.5 A LDO linear regulator offered in fixed‑output and adjustable‑output versions. It supports input voltages from 2.3 V to 6.0 V and provides output voltages from 0.8 V to 5.0 V, making it suitable for portable computing, networking cards, and notebook power supplies.
Key electrical characteristics include a typical dropout voltage of 330 mV at full load, quiescent current of about 120 µA, and a shutdown current below 0.1 µA. The device features over‑temperature and short‑circuit protection, a power‑good output with a 200 µs delay, and is available in 5‑lead DDPAK/TO‑220 and 3‑lead DDPAK/TO‑220 packages.
| Maximum Output Current | 1.5 A |
|---|---|
| Input Operating Voltage Range | 2.3 V to 6.0 V |
| Adjustable Output Voltage Range | 0.8 V to 5.0 V |
| Fixed Output Voltage Options | 0.8 V, 1.2 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 5.0 V |
| Typical Dropout Voltage (1.5 A) | 330 mV |
| Quiescent Current (Normal Operation) | 120 µA typ |
| Shutdown Supply Current | 0.1 µA typ |
| Output Voltage Tolerance | ±0.5 % |
| PSRR (100 Hz) | 60 dB |
| Thermal Shutdown Temperature | 150 °C |
The regulator can deliver up to 1.5 A of output current.
Typical dropout voltage is 330 mV when delivering 1.5 A.
Yes, it has a SHDN pin; the shutdown quiescent current is less than 0.1 µA.
Fixed output voltages are 0.8 V, 1.2 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V.