Datasheet LM3528TME/NOPB - National Semiconductor

Part Number: LM3528TME/NOPB

Detailed Description

Manufacturer: National Semiconductor

Docket:
LM3528 High Efficiency, Multi Display LED Driver with 128 Exponential Dimming Steps and Integrated OLED Power Supply in micro SMD
August 3, 2008
LM3528 High Efficiency, Multi Display LED Driver with 128 Exponential Dimming Steps and Integrated OLED Power Supply in a 1.2mm Ч 1.6mm µSMD Package
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

Specifications:

Efficiency: 90%
Input Voltage Range: 2.5 V to 5.5 V
MSL: MSL 1 - Unlimited
Number of Outputs: 2
Operating Temperature Range: -40°C to +85°C
Output Current: 30 mA
Output Voltage: 20.6 V
Switching Frequency: 1.27 MHz
Topology: Boost (Step Up)

RoHS: Yes