STMicroelectronics L6981 Synchronous Step-down Converters

STMicroelectronics L6981 Synchronous Step-down Converters are easy-to-use synchronous monolithic step-down regulators capable of delivering up to 1.5A DC to the load. The L6981 offers a wide input voltage range that making it suitable for a broad range of applications.

The STM L6981 is offered in low consumption mode (LCM) and low noise mode (LNM) versions. The LCM maximizes the efficiency at light-load with a controlled output voltage ripple, so the device is suitable for battery-powered applications. In comparison, the LNM makes the switching frequency constant and minimizes the output voltage ripple for light load operations, meeting the specification for low noise-sensitive applications.

The L6981 Converters are based on a peak current mode architecture and are available in an SO8 package with internal compensation, minimizing design complexity and size.

Features

3.5V to 38V operating input voltage
Output voltage from 0.85V to V_IN
1.5A DC output current
Internal compensation network
Two different versions: LCM for high efficiency at light-loads and LNM for noise sensitive applications

2μA shutdown current
Internal soft-start
Enable
Overvoltage protection
Output voltage sequencing
Thermal protection
Synchronization to external clock for LNM devices
SO8 package

Applications

Designed for 24V buses industrial power systems
24V battery powered equipment
Decentralized intelligent nodes

Sensors and always-on applications
Low noise applications

STMicroelectronics L6981 Synchronous Step-down Converters

Features

Applications

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