LDO40LPURY STMicroelectronics

LDO40L Datasheet 400 mA, 38 V low-dropout regulator, with 45 A quiescent current Features AEC-Q100 qualified Low quiescent current: typ. 45 A at no load Wide input voltage operating range up to 38 V DFN6 (wettable flanks) Low startup voltage: 3.5 V Output current up to 400 mA Output voltage options: Adj from 2.5 V and fixed, 3.0, 3.3, 5.0 and 8.5 V Output voltage accuracy: 1% typ. 25 C 3% (including line, load and temperature variation) Ultra low-dropout: 36 mV 100 mA load current 140 mV 400 mA load current High PSRR: 70 dB 1 kHz Very low noise: 20 V /V RMS OUT Protection features: current limitation, thermal shutdown -40 C to +125 C operating temperature range Package: DFN6 (3x3) (wettable flanks) Applications Maturity status link Automotive applications LDO40L Body control modules Instruments and clusters Automotive LED lighting Description The LDO40L is a 400 mA LDO regulator, designed for being used in severe automotive environments. Low quiescent current makes it suitable for applications permanently connected to battery. This feature is especially critical when electronic modules remain in active mode when ignition is off. The LDO40L embeds protection functions, such as: current limit and thermal shutdown. The extended input voltage range, low drop voltage and low quiescent current features make it suitable also for low power industrial and consumer applications. DS12711 - Rev 3 - February 2020 www.st.com For further information contact your local STMicroelectronics sales office.LDO40L Block diagram 1 Block diagram Figure 1. Block diagram, fixed version V V O U T IN V SENS E Cu rren t B andgap li m i t re f e ren c e The rm a l p ro t ec t io n Dr i ve r EN E nabl e G ND Figure 2. Block diagram, adjustable version V V O U T I N V SE NS E C u rr en t B andgap li m i t r e f e r en c e T he r m a l p r o t e c t i o n A DJ D r i v e r E N E nab l e G ND DS12711 - Rev 3 page 2/25