MagnaChip Semiconductor Corporation today announced that it has launched two new step-down LED drivers targeting TV LED backlight and LED lighting applications. The new backlight drivers are designated as MAP3511 (single channel) and MAP3512 (dual channels). The MAP3511 and MAP3512 drivers are new designs which replace the existing step-up power circuit method of LED TV backlighting with a step-down circuit. These solutions enable the optimization of TV backlight power circuits by reducing system cost, such as eliminating the need for additional external MOSFETs for dimming control, and increasing system efficiency.
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The new products have multiple embedded protection circuits preventing functional errors during LED operation. This also enhances TV image quality and performance. In addition, a dimming function adjusts TV brightness and supports both PWM signal and analog dimming control signals, making it usable in a wide range of TV applications from low-end TV backlighting to premium ultra-high-definition (UHD).
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MAP3511 (Single Channel) Features: 8.5V to 18V Input Voltage Range; Average-Mode Current Control; Programmable Constant Off-Time; Up to 3V Analog Dimming Input; Direct PWM Dimming Input; ±1% CS (Current Sense) Voltage Accuracy; Fault Output (MOSFET Drain-Source Short); Short Circuit Protection; and 8 Lead SOIC Package, Halogen-free.
MAP3512 (Dual Channel) Features: 8.5V to 18V Input Voltage Range; Average-Mode Current Control; Programmable Constant Off-time; Up to 3V Analog Dimming Input; Direct PWM Dimming Input; ±1% CS (Current Sense) Voltage Accuracy; Fault Output (MOSFET Drain-Source Short); Short Circuit Protection and Over-Duty Protection; and 16 Lead SOIC Package, Halogen-free.
source: http://www.powerpulse.net/story.php?storyID=31568
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