The ADP122AUJZ-3.3-R7 from Analog Devices is a low-quiescent-current CMOS low dropout linear regulator (LDO) featuring a fixed 3.3V output and up to 300mA output current. It operates from an input voltage range of 2.3V to 5.5V, making it well suited for portable electronics, battery-powered equipment, and space-constrained power-management designs.
The ADP122 features a low dropout voltage of approximately 85mV at a 300mA load, helping improve efficiency in low-voltage systems. Quiescent current is approximately 45μA at no load and 170μA at full load, while shutdown current is below 1μA, making the device suitable for power-sensitive applications.
The regulator is designed for stable operation with small 1μF ceramic input and output capacitors. Integrated features include an approximately 350μs soft-start function, short-circuit protection, and thermal overload protection, helping enhance system reliability.
The ADP122AUJZ-3.3-R7 is supplied in a compact 5-lead TSOT package, operates over a temperature range of -40°C to +125°C, and is available in 3,000-piece reel packaging for automated PCB assembly.
Key Features:
- Part Number: ADP122AUJZ-3.3-R7
- Manufacturer: Analog Devices / ADI
- Device Type: Low Dropout Linear Regulator
- Output Type: Fixed
- Output Voltage: 3.3V
- Maximum Output Current: 300mA
- Input Voltage Range: 2.3V to 5.5V
- Dropout Voltage: Approx. 85mV at 300mA
- Quiescent Current: 45μA at No Load
- Shutdown Current: <1μA
- Initial Accuracy: ±1%
- Soft-Start Time: Approx. 350μs
- Protection: Short-Circuit and Thermal Overload
- Package: 5-Lead TSOT / TSOT-23-5
- Operating Temperature: -40°C to +125°C
- Packaging: Reel, 3,000 pcs
- Applications: Portable electronics, battery-powered devices, digital cameras, audio equipment, GPS systems and instrumentation
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