LX1745 Datasheet Triple Output Boost - Led Driver / Lcd Bias

Manufacturer: Microsemi (now Microchip Technology)

Overview: www.DataSheet4U.com LX1745 I N T E G R A T E D P R O D U C T S Triple Output Boost – LED Driver / LCD Bias P RODUCTION D.

Datasheet Details

Part number	LX1745
Manufacturer	Microsemi (now Microchip Technology)
File Size	465.03 KB
Description	Triple Output Boost - LED Driver / LCD Bias
Datasheet	LX1745_MicrosemiCorporation.pdf

General Description

The LX1745 is a compact high efficiency step-up boost regulator for driving white or color LEDs in LCD lighting applications while supplying the necessary LCD bias voltages with an additional two integrated boost converters.

Designed for maximum efficiency and featuring a psuedo-hysteretic PFM topology (that decreases output voltage ripple), the LX1745 minimizes system cost and condenses layout area making it ideal for PDA, smart-phone, and digital camera applications.

While the LCD Bias generation is implemented using an internal N-Channel MOSFET for LCD Bias generation, the LED driver utilizes an external N-Channel MOSFET in order to maintain maximum efficiency along with flexible power requirements..

Key Features

> 90% Maximum Efficiency.
Low Quiescent Supply Current.
Externally Programmable Peak Inductor Current Limit For Maximum Efficiency.
Logic Controlled Shutdown.
< 1µA Shutdown Current.
Dynamic Output LED Current and Two LCD Bias Voltage Adjustments Via Analog Reference Or Direct PWM Input.
20-Pin TSSOP Package.

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