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LM27964 System Datasheet PDF

White LED Driver System

White LED Driver System

 

 

 

Part Number LM27964
Description White LED Driver System
Feature LM27964 White LED Driver System with I2C Compatible Brightness Control August 2007 LM27964 White LED Driver System w ith I2C Compatible Brightness Control G eneral Description The LM27964 is a cha rge-pump-based white-LED driver that is ideal for mobile phone display backlig hting.
The LM27964 can drive up to 6 LE Ds in parallel along with multiple keyp ad LEDs, with a total output current up to 180mA.
Regulated internal current s ources deliver excellent current matchi ng in all www.
DataSheet4U.
com LEDs.
The LED driver current sources are split i nto two independently controlled groups .
The primary .
Manufacture National Semiconductor
Datasheet
Download LM27964 Datasheet

LM27964

 

 

 


 

 

 

Part Number LM27964
Description White LED Driver
Feature LM27964 www.
ti.
com SNOSAL6D – MAY 20 05 – REVISED MAY 2013 LM27964 White LED Driver System with I2C Compatible B rightness Control Check for Samples: LM 27964 FEATURES 1
•2 87% Peak LED Dri ve Efficiency
• 0.
2% Current Matching between Current Sinks
• Drives 6 LED s with up to 30mA per LED in Two Distin ct Groups, for Backlighting Two Display s (main LCD and sub LCD)
• Dedicated Keypad LED Driver with up to 80mA of Dr ive Current
• Independent Resistor-Pr ogrammable Current Settings
• I2C Com patible Brightness Control Interface Adaptive 1×- 3/2× Charge Pump
• E xtended Li-Ion Input: 2.
7V to 5.
5V
• .
Manufacture Texas Instruments
Datasheet
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LM27964

 

 

 

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