ADP1755

Key Features

Type: CMOS Low Dropout Linear Regulator

Input Voltage Range: 1.6 V to 3.6 V

Output Voltage Range: Adjustable from 0.75 V to 3.3 V (set via external resistors)

Output Current: Up to 1.2 A

Dropout Voltage: 105 mV typical at 1.2 A load

Accuracy: ±1% over line, load, and temperature

Power Supply Rejection Ratio (PSRR): 70 dB at 10 kHz

Quiescent Current: 2.5 mA typical

Noise Performance: 75 μVrms (10 Hz to 100 kHz)

Protection Features:

Overcurrent protection

Thermal shutdown

Soft-start for controlled startup

Enable Pin: Logic-controlled shutdown to reduce power consumption

Package Type: 16-lead LFCSP (4 mm × 4 mm)

Operating Temperature Range: –40 °C to +125 °C (industrial)

ESD Rating: 2 kV (HBM)

RoHS / REACH: Compliant, Pb-free

Performance Highlights

Fast transient response ideal for high-speed digital loads

Stable operation with small ceramic capacitors (4.7 μF input/output)

Excellent PSRR and low noise for RF and analog circuits

Adjustable output version (ADP1755) allows fine voltage tuning

Drop-in compatible with ADP1754 (fixed output version)

Applications

Power supply for FPGAs, DSPs, and processors

Post-regulation of DC-DC converters

Sensitive analog and mixed-signal circuits

RF and communication systems

Portable, battery-powered, or industrial devices