Features
• AEC-Q100 qualified
• Low quiescent current: typ. 45 μA at no load
• Wide input voltage operating range up to 38 V
• 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 μVRMS/VOUT
• Protection features: current limitation, thermal shutdown
• -40 °C to +125 °C operating temperature range
• Package: DFN6 (3x3) (wettable flanks)

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.

Applications
• Automotive applications
• Body control modules
• Instruments and clusters
• Automotive LED lighting