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MAX8790A

Maxim Integrated Products
Part Number MAX8790A
Manufacturer Maxim Integrated Products
Description Six-String White LED Driver
Published Oct 19, 2009
Detailed Description 19-0989; Rev 0; 10/07 KIT ATION EVALU E L B A AVAIL Six-String White LED Driver with Active Current Balancing for LCD ...
Datasheet PDF File MAX8790A PDF File

MAX8790A
MAX8790A

Overview
19-0989; Rev 0; 10/07 KIT ATION EVALU E L B A AVAIL Six-String White LED Driver with Active Current Balancing for LCD Panel Applications General Description The MAX8790A is a high-efficiency driver for white lightemitting diodes (LEDs).
It is designed for large liquidcrystal displays (LCDs) that employ an array of LEDs as the light source.
A current-mode step-up controller drives up to six parallel strings of multiple series-connected LEDs.
Each string is terminated with ballast that achieves ±1.
5% current regulation accuracy, ensuring even brightness for all LEDs.
The MAX8790A has a wide input-voltage range from 4.
5V to 26V, and provides a fixed 20mA or adjustable 15mA to 27mA full-scale LED current.
The MAX8790A has two dimming control modes to enable a wide variety of applications.
In direct DPWM mode, the LED current is directly turned on and off by a PWM signal.
In analog dimming mode, an internal phase-locked loop (PLL) circuit translates the PWM signal into an analog signal an...


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