STMicroelectronics LD39100PUR

Description
The LD39100xx is a low quiescent current, low noise voltage regulator that provides a maximum output current of 1 A. It operates with an input voltage range of 1.5 V to 5.5 V and has a typical dropout voltage of 200 mV at 1 A load. The device is stable with ceramic capacitors on the input and output, and features very low noise (30 μVAMS at VOUT = 0.8 V) without the need for a bypass capacitor. It has an output voltage tolerance of 2.0% at 25 °C and a wide range of output voltages available on request (0.8 V to 4.5 V in 100 mV steps, adjustable from 0.8 V). The LD39100xx also includes logic-controlled electronic shutdown, internal current and thermal limit protection, and is available in a DFN6 (3 x 3 mm) package.

Features
Input voltage range: 1.5 V to 5.5 V
Ultra low dropout voltage: 200 mV typ. at 1 A load
Very low quiescent current: 20 μA typ. at no load, 200 μA typ. at 1 A load, 1 μA max in off mode
Very low noise with no bypass capacitor: 30 μVAMS at VOUT = 0.8 V
Output voltage tolerance: 2.0% at 25 °C
1 A guaranteed output current
Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 mV step and adjustable from 0.8 V
Logic-controlled electronic shutdown
Stabilized with ceramic capacitors (COUT = 1 μF)
Internal current and thermal limit
DFN6 (3 x 3 mm) package
Temperature range: -40 °C to 125 °C

Applications
Printers
Personal digital assistants (PDAs)
Cordless phones
Consumer applications