STEVAL-ILL020V1: 30mA x6 @ 36V Max, 4.5 ~ 36 Vin

Summary

The LED7706 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 30 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 Part Number 497-10043-ND
Eval Board Supplier STMicroelectronics
Eval Board Normally In Stock
Voltage In 4.5 ~ 36 V
Topology Step Up
Current Out 30 mA
Voltage Out (Max) 36 V
Outputs and Type 6 Non-Isolated
Efficiency @ Conditions >93%, 24V in, 60 LEDs @ 20 mA
>87%, 6V in, 60 LEDs @ 20 mA
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 23 + 18
Design Author STMicroelectronics
Application / Target Market LCD Backlighting
LCD TV / Monitor
Main I.C. Base Part LED7706
Date Created By Author
Date Added To Library 2011-03

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Support Documents & Media

LED7706 - Data Sheet and Eval Board User Guide STEVAL-ILL020V1 - Data Brief * STEVAL-ILL020V1 - Bill of Materials STEVAL-ILL020V1 - Schematic

Media

EVALED7706_Schematic.JPG EVALED7706_Board.JPG