Analog Devices Inc. ADPL40502 Low Noise LDO Linear Regulators
Analog Devices ADPL40502 Low Noise, Low Dropout (LDO) Linear Regulators operate from 2.2V to 5.5V and provide up to 200mA output current. The low 150mV dropout voltage at a 200mA load allows operation over a wide input voltage range and improves efficiency.
Using an innovative circuit topology, the ADPL40502 achieves low noise performance without a bypass capacitor, making the device ideal for RF applications and noise-sensitive analog. The regulators also achieve low noise performance without compromising the power supply rejection ratio (PSRR) or transient load/line performance. The low 290μA operating supply current at a 200mA load makes the ADPL40502 suitable for battery-operated portable equipment.
The ADPL40502 includes an internal pull-down resistor on the EN input. It is specifically designed for stable operation with tiny 1μF, ±30% ceramic output and input capacitors to meet the requirements of high-performance, space-constrained applications. The ADPL40502 can have seven fixed output voltage options, ranging from 1.2V to 3.3V.
Thermal and short-circuit overload protection circuits prevent damage in adverse conditions. The Analog Devices ADPL40502 is available in a tiny 5-lead TSOT or a 6-lead 2mm x 2mm LFCSP package for a small footprint solution to meet various portable power application requirements.
Features
- Low noise of 20μVRMS
- No noise bypass capacitor is required
- Stable with 1μF ceramic input and output capacitors
- 200mA maximum output current
- 2.2V to 5.5V input voltage range
- Low quiescent current
- IGND = 20μA with IOUT = 0μA
- IGND = 290μA with IOUT = 200mA
- Low <1μA shutdown current
- Low 150mV dropout voltage at IOUT
- ±1% initial accuracy
- ±2.5% accuracy over line, load, and temperature
- Seven fixed output voltage options (1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, and 3.3V)
- 70dB PSRR performance at 10kHz
- Current-limit and thermal overload protection
- Logic-controlled enable
- Internal pull-down resistor on EN input
- Package options
- 5-lead, thin, small outline transistor (TSOT) package
- 6-lead, lead frame chip scale (LFCSP) package
Applications
- RF, Voltage-Controlled Oscillator (VCO), and Phase Locked Loop (PLL) power supplies
- Mobile phones
- Digital cameras and audio devices
- Portable and battery-powered equipment
- Post DC-to-DC regulation
- Portable medical devices
Typical Applications
Development Tool
Analog Devices Inc. EVAL-ADPL40502-REDYKIT Evaluation Boards
For prototyping and evaluating each standard fixed output voltage option in the ADPL40502 family.
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