ADPL40505A

RECOMMENDED FOR NEW DESIGNS

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

Analog Devices ADPL40505A Product Info

10 February 2026 5

Features

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 (3.6V_IN)
20μA No-Load Supply Current in Low-Power Mode
350μA Supply Current in Normal Mode
<1μA Shutdown Supply Current
45μV_RMS Output Noise, 10Hz to 100kHz
60dB PSRR at 10kHz, 250mA Load Current, and 300mV Input and Output Voltage Separation

±2% DC Accuracy Over Load, Line, and Temperature Variations
Active Discharge of 800Ω at OUT
Stable with 2μF (Minimum Effective) Output Capacitance
Programmable Soft-Start Rate
Overcurrent and Overtemperature Protection
Reverse-Current Protection
Power-OK Output
2mm x 2mm, 8-Pin TDFN Package
-40°C to +125°C Operating Temperature

Part details & applications

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.

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