BETAMCP1700-3302250 mA low-quiescent-current LDO
A 3.3 V rail with microamp standby consumption.
MCP1700-3302 is the fixed 3.3 V member of Microchip’s CMOS low-dropout regulator family. It supplies up to 250 mA within its voltage and thermal limits while drawing only 1.6 µA typical quiescent current at no load. A ceramic output capacitor makes it convenient for small low-power supplies. The selected through-hole MCP1700-3302E/TO and surface-mount MCP1700T-3302E/TT have different pin orders. TO-92 uses GND1/VIN2/VOUT3; SOT-23 uses GND1/VOUT2/VIN3. The package switch updates the pinout, PCB footprint and silver-lead package views together. Use a 2.3–6.0 V input range with additional headroom above the 3.3 V output. The example uses 5 V, local 1 µF ceramic input and output capacitors, and a 330 Ω load. Package heating, capacitor DC-bias derating and the actual device tolerance matter more than the headline current alone.
