LDFM Datasheet 500 mA very low drop voltage regulator Features Input voltage from 2.5 to 16 V Very low dropout voltage (300 mV max. at 500 mA load) Low quiescent current (200 A typ. 500 mA load) Available in 1 % precision in PPAK and DFN6 packages, 2 % in DPAK PPAK DFN6 (2x2) 500 mA guaranteed output current Wide range of output voltages available on request: adjustable from 0.8 V, fixed up to 12 V in 100 mV steps Logic-controlled electronic shutdown Power Good (PPAK and DFN packages) Fast dynamic response to line and load changes DFN6 (3x3) DPAK Internal current and thermal protection Temperature range: - 40 C to 125 C Applications PCs and laptop computers Battery-powered equipment Industrial and medical equipment Portable equipment Description Maturity status link The LDFM is a fast, very low drop linear regulator which operates from an input LDFM supply voltage in the range of 2.5 V to 16 V. It is available in fixed and adjustable output voltage versions, from 0.8 V to 12 V. The LDFM features high output precision, very low dropout voltage, low noise, and low quiescent current, therefore suitable for low voltage microprocessors and memory applications. Enable logic control pin and Power Good output are featured on PPAK/DFN packages. Current and thermal protection are provided. DS9220 - Rev 6 - May 2021 www.st.com For further information contact your local STMicroelectronics sales office.LDFM Block diagram 1 Block diagram Figure 1. Block diagram (generic version) DS9220 - Rev 6 page 2/36