The document describes the ADP1740/ADP1741 low dropout linear regulators, which have a maximum output current of 2A, an input voltage range of 1.6V to 3.6V, a low shutdown current of 2μA, a low dropout voltage of 160mV @ 2A load, an initial accuracy of ±1%, and an accuracy over line, load, and temperature of ±2%. It offers 7 fixed output voltage options with soft start (ADP1740) and adjustable output voltage options with soft start (ADP1741). The regulators have high PSRR, stability, and excellent load and line transient response. They also feature current-limit and thermal overload protection, power-good indicator, logic-controlled enable, and reverse current protection. The ADP1740/ADP1741 are suitable for applications such as server computers, memory components, telecommunications equipment, network equipment, and DSP/FPGA/microprocessor supplies.
The ADP1740/ADP1741 are low‑Vin/low‑Vout LDO regulators that operate from 1.6 V to 3.6 V and provide up to 2 A of output current. They are suited for server computers, memory components, telecommunications, DSP/FPGA supplies and instrumentation equipment.
Key features include a low shutdown current (2 pA), dropout voltage as low as 160 mV at 2 A load, high power‑supply rejection ratio (65 dB at 1 kHz), soft‑start control, power‑good indicator, reverse‑current protection and a compact 16‑lead LFCSP package (4 mm × 4 mm).
| Maximum output current | 2 A |
|---|---|
| Input voltage range | 1.6 V to 3.6 V |
| Shutdown current | 2 pA |
| Dropout voltage (2 A load) | 160 mV |
| Power‑supply rejection ratio (1 kHz, 0.75 V output) | 65 dB |
| Output noise (0.75 V output) | 23 pV rms |
| Package | 16‑lead LFCSP, 4 mm × 4 mm |
| Thermal shutdown threshold | 150 °C |
Both devices can deliver up to 2 A of output current.
They operate from 1.6 V to 3.6 V.
The ADP1740 is offered in seven fixed output voltage options.
They are supplied in a 16‑lead LFCSP package measuring 4 mm × 4 mm.