5.5V, 500mA LDO Linear Regulator with Low-Power Mode

The ADPL40505A is a 5.5V, P-Channel Metal-Oxide Semiconductor (PMOS) Low Drop-Out (LDO) linear regulator that delivers up to 500mA load current. The ADPL40505A features a low-power mode of operation that consumes very low quiescent current from the supply.

The regulator is fully protected from damage by internal circuitry that provides programmable inrush current limiting, output overcurrent limiting, reverse current limiting, and thermal overload protection. The ADPL40505A has an 800Ω active discharge feature to quickly discharge output capacitors.

The ADPL40505A provides enhanced flexibility with an adjustable output voltage in the range of 0.8V to 5.0V by using two external feedback resistors.

The ADPL40505A is available in an 8-pin, 2mm x 2mm Thin Dual Flat No-Lead (TDFN) package.

* 1.7V to 5.5V Input Supply Range

* 0.8V to 5.0V Output Voltage Range

* 500mA Maximum Output Current

* 120mV Maximum Dropout at 500mA Load (3.6VIN)

* 20μA No-Load Supply Current in Low-Power Mode

* 350μA Supply Current in Normal Mode

* <1μA Shutdown Supply Current

* 45μVRMS Output Noise, 10Hz to 100kHz

* 60dB PSRR at 10kHz, 250mA Load Current, and 300mV Input and Output Voltage Separation