LDH40 Low-Quiescent Current LDO

Product Highlights > LDH40 Low-Quiescent Current LDO

            LDH40 Low-Quiescent Current LDO
                    STMicroelectronics' voltage regulator is designed to be directly connected to a car battery
    

STMicroelectronics LDH40 Low-Quiescent Current LDO STMicroelectronics' LDH40 is a high-accuracy voltage regulator designed to be directly connected to a car battery in automotive applications or a generic battery connected in industrial applications. Extended input voltage up to 40 V makes the device capable of supporting a load dump transient, typical in automotive systems. Ultra-low quiescent current at light load increases the battery operation lifetime in always-on-standby systems.

The device is stabilized with a small ceramic capacitor on the input and output. An enable logic control function puts the LDH40 in shutdown mode, reducing the total current consumption to lower than 0.3 µA. Thermal protection is also included. The device is available in automotive grade in a very small footprint DFN 6L 2x2 WF package, allowing maximum space saving in the PCB (printed circuit board) design and AOI (automated optical inspection).

Features

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

Logic-controlled electronic shutdown
Internal current limit
Short-circuit protection
Thermal shutdown
Output active discharge function
Package options:
- DFN 6L 2x2 WF for automotive grade
- SOT23-5L and DFN 6L for industrial under qualification

Applications

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

Infotainment and instrument clusters
ADAS