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.