0.3-10.0V; GSM power management system. For GSM/DCS/PCS/CDMA handsets The ADP3408ARU-2.5 is a low dropout (LDO) linear regulator manufactured by Analog Devices (AD). Key specifications include:

- **Output Voltage:** 2.5V (fixed)
- **Output Current:** Up to 800mA
- **Dropout Voltage:** 300mV typical at 800mA load
- **Input Voltage Range:** 2.7V to 6.0V
- **Line Regulation:** 0.05% typical
- **Load Regulation:** 0.1% typical
- **Quiescent Current:** 80µA typical
- **Package:** 20-lead TSSOP
- **Operating Temperature Range:** -40°C to +85°C
- **Protection Features:** Overcurrent and thermal shutdown

This regulator is designed for applications requiring a stable and precise 2.5V supply with low noise and high efficiency.