LM27953 White LED Driver

National Semiconductor

Description

November 2004 www.DataSheet4U.com LM27953 White LED Driver with Four LED Current Sinks and 3/2x Switched Capacitor Boost LM27953 White LED Driver wi.
The LM27953 is a charge-pump-based white-LED driver that is ideal for mobile phone display backlighting.

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Datasheet Specifications

Part number: LM27953
Manufacturer: National Semiconductor
File Size: 706.74 KB
Datasheet: LM27953_NationalSemiconductor.pdf
Description: White LED Driver

Features

* n Drives 4 Individual Common-Anode LEDs with up to 20mA each for a Main Display Backlight n Independent Resistor-Programmable Current Setting n Excellent Current and Brightness Matching n High-Efficiency 3/2x Charge Pump n Extended Li-Ion Input: 2.7V to 5.5V n PWM Brightness Control: 100Hz - 1kHz n

Applications

* n n n n Mobile Phone Display Lighting Mobile Phone Keypad Lighting PDAs General LED Lighting Typical Application Circuit 20128001 © 2004 National Semiconductor Corporation DS201280 www. national. com LM27953 Connection Diagram 18-Bump Thin Micro SMD Package, Large Bump NS Package Number TLA18

LM27953 Distributors

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LM27953 White LED Driver National Semiconductor

National Semiconductor LM27953-like datasheet