datasheetbank_Logo    Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site
Part Name  
HOME  >>>  National-Semiconductor  >>> LM3528 PDF

LM3528 Datasheet PDF - National ->Texas Instruments

Part NameDescriptionManufacturer
LM3528 High Efficiency, Multi Display LED Driver with 128 Exponential Dimming Steps and Integrated OLED Power Supply in a 1.2mm × 1.6mm µSMD Package National-Semiconductor
National ->Texas Instruments National-Semiconductor
Other PDF  no available.
LM3528 Datasheet PDF : LM3528 pdf   
LM3528 image

General Description
The LM3528 current mode boost converter offers two separate outputs. The first output (MAIN) is a constant current sink for driving series white LED’s. The second output (SUB/FB) is configurable as a constant current sink for series white LED bias, or as a feedback pin to set a constant output voltage for powering OLED panels.
As a dual output white LED bias supply, the LM3528 adaptively regulates the supply voltage of the LED strings to maximize efficiency and insure the current sinks remain in regulation. The maximum current per output is set via a single external low power resistor. An I2C compatible interface allows for independent adjustment of the LED current in either output from 0 to max current in 128 exponential steps. When configured as a white LED + OLED bias supply the LM3528 can independently and simultaneously drive a string of up to 6 white LED’s and deliver a constant output voltage of up to 21V for OLED panels.
Output over-voltage protection shuts down the device if VOUT rises above 22V allowing for the use of small sized low voltage output capacitors. Other features include a dedicated general purpose I/O (GPIO) and a multi-function pin (HWEN/PGEN/GPIO) which can be configured as a 32 bit pattern generator, a hardware enable input, or as a GPIO. When configured as a pattern generator, an arbitrary pattern is programmed via the I2C compatible interface and output at HWEN/PGEN/GPIO for indicator LED flashing or for external logic control. The LM3528 is offered in a tiny 12-bump µSMD package and operates over the -40°C to +85°C temperature range.

Features
■ 128 Exponential Dimming Steps
■ Programmable Auto-Dimming Function
■ Up to 90% Efficient
■ Low Profile 12 Bump µ-SMD Package (1.2mm x 1.6mm x 0.6mm)
■ Integrated OLED Display Power Supply and LED Driver
■ Programmable Pattern Generator Output for LED Indicator Function
■ Drives up to 12 LED’s at 20mA
■ Drives up to 5 LED’s at 20mA and delivers 18V at 40mA
■ 1% Accurate Current Matching Between Strings
■ Internal Soft-Start Limits Inrush Current
■ True Shutdown Isolation for LED’s
■ Wide 2.5V to 5.5V Input Voltage Range
■ 22V Over-Voltage Protection
■ 1.25MHz Fixed Frequency Operation
■ Dedicated Programmable General Purpose I/O
■ Active Low Hardware Reset

Applications
■ Dual Display LCD Backlighting for Portable Applications
■ Large Format LCD Backlighting
■ OLED Panel Power Supply
■ Display Backlighting with Indicator Light

Page Links : 1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32 
 

Other manufacturer searches related to LM3528

Part NameDescriptionPDFManufacturer
FAN5331 High Efficiency Serial LED Driver and OLED Supply with 20V Integrated Switch FAN5331 View Fairchild Semiconductor
FAN5332A High Efficiency, High Current Serial LED Driver and OLED Supply with 30V Integrated Switch FAN5332A View Fairchild Semiconductor
SM8205 High-Power LED Driver with Integrated PWM Dimming MOSFET Driver SM8205 View Samhop Mircroelectronics
TPS92070 High-Efficiency Integrated Dimming LED Lighting Controller TPS92070 View Texas Instruments
MAX5128 128-Tap, Nonvolatile, Linear-Taper Digital Potentiometer in 2mm x 2mm µDFN Package MAX5128 View Maxim Integrated
SC5010 High Efficiency 8-Channel LED Driver with I2C Interface and Phase-Shifted PWM Dimming SC5010 View Semtech Corporation
SC5014A High Efficiency 2-Channel HB LED Driver with I2C Interface and Direct PWM Dimming SC5014A View Semtech Corporation
SC5010H High Efficiency 8-Channel LED Driver with I2C Interface and Phase-Shifted PWM Dimming SC5010H View Semtech Corporation
SC5014 High Efficiency 4-Channel HB LED Driver with I2C Interface and Phase-Shifted PWM Dimming SC5014 View Semtech Corporation
SC5012 High Efficiency 4-Ch, 150mA/Ch LED Driver with I²C Interface and Phase-Shifted PWM Dimming SC5012 View Semtech Corporation

Share Link : 

한국어 简体中文 日本語 русский español


All Rights Reserved © datasheetbank.com 2014 - 2019  ] [ Privacy Policy ] [ Request Datasheet  ] [ Contact Us ]