STMicroelectronics LDH40 200mA Low Dropout LDO

STMicroelectronics LDH40 200mA Low Dropout LDO is developed to be directly connected to a car battery in automotive applications or to a generic battery in industrial applications. The LDH40 offers an extended input voltage of up to 40V to support a load dump transient in automotive systems. The device’s ultra-low quiescent current featured at light load increases the battery operation lifetime in always-on-standby systems.

The STMicro LDH40 is stabilized with a small ceramic capacitor on the input and output. An enable logic control function puts the LDH40 in shutdown mode, permitting a total current consumption lower than 0.3µA. Thermal protection is also included. The device is offered in an automotive grade, tiny footprint DFN package with a wettable flank. The footprint saves maximum space in the printed circuit board (PCB) design and automated optical inspection (AOI).

Features

AEC-Q100 grade 1 qualified
Operating temperature range of -40°C <T_J <+150°C
Input voltage from 3.3V to 40V
Dropout voltage (700mV typ. at 200mA load)
Low ground current (2μA typ. at no load)
ADJ from 1.2V to 22V
Output voltage tolerance of 0.5% at 25°C
200mA guaranteed output current

Power Good
Logic-controlled electronic shutdown
Internal current limit
Thermal shutdown
Output active discharge function
Packages
- DFN 2 x 2 6L WF for automotive grade
- SOT23 5L and DFN 6L for industrial

Applications

EV powertrain
Body control modules
Always-on battery-connected application

Infotainment and instrument cluster
ADAS

STMicroelectronics LDH40 200mA Low Dropout LDO

Features

Applications

Block Diagram

Typical application circuit

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