FEATURES
 Low Noise: 20μVRMS
 No Noise Bypass Capacitor Required
 Stable with 1μF Ceramic Input and Output
Capacitors
 Maximum Output Current: 200mA
 Input Voltage Range: 2.2V to 5.5V
 Low Quiescent Current
 IGND = 20μA with IOUT = 0μA
 IGND = 290μA with IOUT = 200mA
 Low Shutdown Current: <1μA
 Low Dropout Voltage: 150mV at IOUT = 200mA
 Initial Accuracy: ±1%
 Accuracy Over Line, Load, and Temperature: ±2.5%
 7 Fixed Output Voltage Options: 1.2V, 1.5V, 1.8V,
2.5V, 2.8V, 3.0V, and 3.3V
 PSRR Performance of 70dB at 10kHz
 Current-Limit and Thermal Overload Protection
 Logic Controlled Enable
 Internal Pull-Down Resistor on EN Input
 5-Lead, Thin Small Outline Transistor Package
 6-Lead, Lead Frame Chip Scale Package

APPLICATIONS
 RF, Voltage-Controlled Oscillator (VCO), and Phase
Locked Loop (PLL) Power Supplies
 Mobile Phones
 Digital Camera and Audio Devices
 Portable and Battery-Powered Equipment
 Post DC-to-DC Regulation
 Portable Medical Devices

GENERAL DESCRIPTION
The ADPL40502 is a low noise, low dropout (LDO) linear
regulator that operates from 2.2V to 5.5V and provides
up to 200mA of output current. The low 150mV dropout
voltage at 200mA load improves efficiency and allows
operation over a wide input voltage range.
Using an innovative circuit topology, the ADPL40502
achieves low noise performance without the necessity
of a bypass capacitor, making the device ideal for noise
sensitive analog and RF applications. The ADPL40502
also achieves low noise performance without
compromising the power supply rejection ratio (PSRR)
or transient line and load performance. The low 290μA
of operating supply current at 200mA load makes the
ADPL40502 suitable for battery-operated portable
equipment.
The ADPL40502 includes an internal pull-down resistor
on the EN input.
The ADPL40502 is specifically designed for stable
operation with tiny 1μF, ±30% ceramic input and output
capacitors to meet the requirements of high
performance, space constrained applications.
The ADPL40502 is capable of 7 fixed output voltage
options, ranging from 1.2V to 3.3V.
Short-circuit and thermal overload protection circuits
prevent damage in adverse conditions. The ADPL40502
is available in tiny 5-Lead, TSOT and 6-Lead, 2mm x
2mm LFCSP for the smallest footprint solution to meet
a variety of portable power application requirements.