STMicroelectronics L6741 High Current MOSFET Driver Datasheet

L6741 is a high-current dual-driver specifically designed to drive N-channel MOSFETs connected in Synchronous-Rectified Buck topology.

Brand: STMicroelectronics
Category: Other Electronics
Document type: Datasheet
Language: English
Pages: 16
File format: PDF
File size: 305 KB
Published: 10 August, 2012
Updated: 30 September, 2023
Model: L6741
MD5 checksum: E2EC19F28BFA9C109BB60A3E6CD7FE6D
PDF: STMicroelectronics L6741 High Current MOSFET Driver Datasheet PDF

About this manual

The L6741 is a flexible, high-frequency dual-driver specifically designed to drive N-channel MOSFETs connected in a Synchronous-Rectified Buck topology. It is intended for use with ST PWM controllers to implement complete voltage regulator solutions for modern high-current CPUs. The device embeds high-current drivers for both high-side and low-side MOSFETs and accepts a flexible power supply ranging from 5V to 12V.

What's inside

Typical application circuit
Block diagram
Pins description
Thermal data
Absolute maximum ratings
Electrical characteristics
High-impedance management
Preliminary OV protection
Internal BOOT diode
Layout guidelines

Specifications

Supply current (VCC supply)	5 mA
HS Source resistance	2.3 to 2.8 Ohm
HS Sink Resistance	2 to 2.5 Ohm
LS Sink Resistance	1 to 1.5 Ohm
Pre-OV threshold	1.8 V
Maximum junction temperature	150 °C
Package	SO-8

Frequently asked questions

What is the operating voltage range for the VCC pin?

The VCC pin accepts any voltage between 5V and 12V.

Does the L6741 include an external bootstrap diode?

No, the device embeds an internal bootstrap diode to save external components.

What is the purpose of the Preliminary OV protection?

It protects the load from High-Side MOSFET failures during system start-up by latching the Low-Side MOSFET ON if the PHASE voltage exceeds 2V.

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