EVALED7707: 6x 85mA @ 36V Max, 4.5 ~ 36Vin

Summary

The LED7707 consists of a high efficiency monolithic boost converter and six controlled current generators (rows) specifically designed to supply LEDs arrays used in the backlighting of LCD panels. The device can manage an output voltage up to 36 V (i.e. 10 white LEDs per row).

The generators can be externally programmed to sink up to 85 mA and can be dimmed via a PWM signal.

The device allows to detect and manage the open and shorted LED faults and to let unused rows floating. Basic protections (output over-voltage, internal MOSFET over-current and thermal shutdown) are provided.

The switching frequency can be set from 250 kHz-1 MHz.

Specifications

Manufacturer STMicroelectronics
Category Lighting
Sub-Category LED Drivers - DC In
Eval Board Board not Stocked
Voltage In 4.5 ~ 36 V
Topology Step Up
Current Out 85 mA
Voltage Out (Max) 36 V
Outputs and Type 6 Non-Isolated
Efficiency @ Conditions >91%, 24V in, 60 LEDs @ 60 mA (825 kHz)
>88%, 12V in, 60 LEDs @ 60 mA (825 kHz)
Features Dimming Control
Open Circuit Protection
Over Current Protection
Over Voltage Protection
Short Circuit Protection
Shutdown, Enable, Standby
Soft Start
Synchronizable
Thermal Protection
Switching Frequency 825 kHz
Component Count + Extras 25 + 4
Design Author STMicroelectronics
Application / Target Market LCD Backlighting
LCD TV / Monitor
Main I.C. Base Part LED7707
Date Created By Author
Date Added To Library 2017-05

Support Documents & Media

LED7707 - Data Sheet and Eval Board User Guide

Media

EVALED7707_Schematic.JPG EVALED7707_Board.JPG