Description

The LD56100 high accuracy voltage regulator provides 1 A of current from an input

voltage ranging from 1.8 V to 5.5 V, with a typical dropout voltage of 120 mV.

It is available in DFN8 (1.2 x 1.6 mm) package, allowing the maximum space saving.

The device is stabilized with a ceramic capacitor on the output. The ultra-low drop

voltage, low quiescent current and fast transient response, together with the internal

soft-start circuit, make the LD56100 suitable for low power battery-operated

applications.

An enable logic control function puts the LD56100 in shutdown mode allowing a total

current consumption lower than 0.1 µA. Short-circuit protection with current limit

foldback and thermal protection are also included.

Features

• Input voltage from 1.8 to 5.5 V

• Ultra-low dropout voltage (120 mV typ. at 1 A load and VOUT = 3.3 V)

• Very low quiescent current (100 µA typ. at no-load, 0.03 µA typ. in off mode)

• Output voltage tolerance: ± 1 from -40 °C to +85 °C

• Ultra-low Noise: 13 µV RMS Noise from 10 Hz to 100 kHz at VOUT = 3.0 V

• High PSRR (70 dB@1 kHz)

• Wide range of output voltages available on request: from 1.0 V up to 5.0 V in 50

mV step

• Logic-controlled electronic shutdown

• Internal soft-start

• Optional output voltage discharge feature

• Compatible with ceramic capacitor COUT = 1 µF

• Internal current limit foldback and thermal protections

• Available in DFN8 (1.2 x 1.6 mm)

• Operating temperature range: -40 °C to 125 °C

Applications

• Mobile phones

• Tablets

• Battery-powered systems

• Camera supply