The ADP1740/ADP1741 is a high-performance, high-reliability 2A low-dropout linear regulator with ultra-low input bias current and high output current capability. This device features low dropout voltage, wide input voltage range, high output current, high accuracy, high PSRR, low start-up current and small package, making it ideal for a variety of applications such as server computers, memory components, telecommunications equipment, network equipment, DSP/FP and so on.
The ADP1740 and ADP1741 are low‑dropout (LDO) CMOS linear regulators that operate from 1.6 V to 3.6 V and deliver up to 2 A of output current. They offer high PSRR, low noise, soft‑start capability, power‑good monitoring and protection features such as current‑limit, thermal shutdown and reverse‑current protection.
Both devices are offered in a 16‑lead 4 mm × 4 mm LFCSP package with an exposed pad for thermal performance. The datasheet includes pin‑out diagrams, recommended capacitor selections, thermal data, absolute maximum ratings and typical application circuits for server, telecom and embedded designs.
| Maximum output current | 2 A |
|---|---|
| Input voltage range | 1.6 V to 3.6 V |
| Low dropout voltage (2 A load) | 160 mV |
| Shutdown current | 2 pA |
| Power‑supply rejection ratio (1 kHz) | 65 dB |
| Output noise (0.75 V output) | 23 µV rms |
| Package | 16‑lead LFCSP, 4 mm × 4 mm |
| Thermal shutdown threshold | 150 °C |
| Minimum input and output capacitance | > 3.3 µF |
The regulators can supply up to 2 A of output current.
They operate from 1.6 V to 3.6 V.
The output noise is 23 µV rms at a 0.75 V output.
Both devices are supplied in a 16‑lead LFCSP package measuring 4 mm × 4 mm.