LP3954 Datasheet, PDF (1/60 Pages) National Semiconductor (TI) – Advanced Lighting Management Unit

LP3954
www.ti.com
SNVS340D – JUNE 2005 – REVISED MARCH 2013
Advanced Lighting Management Unit
Check for Samples: LP3954
FEATURES
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•2 Audio Synchronization for Color/RGB LEDs
• Command Based PWM Controlled RGB LED
Drivers
• High Current Driver for Flash LED With Built-in
Timing
• 4+2 or 6 Low Voltage Constant Current White
LED Drivers With Orogrammable 8-Bit
Adjustment (0…25mA/LED)
• High Efficiency Boost DC-DC Converter
• SPI / I²C Compatible Interface
• Possibility for External PWM Dimming Control
• Possibility for Clock Synchronization for RGB
Timing
• Ambient Light and Temperature Sensing
Possibility
• Small Package – DSBGA, 3.0 x 3.0 x 0.6mm
DESCRIPTION
LP3954 is an advanced lighting management unit for
handheld devices. It drives any phone lights including
display backlights, RGB, keypad and camera flash
LEDs. The boost DC-DC converter drives high
current loads with high efficiency. White LED
backlight drivers are high efficiency low voltage
structures with excellent matching and automatic fade
in/ fade out function. The new stand-alone command
based RGB controller is feature rich and easy to
configure. Built-in audio synchronization feature
allows user to synchronize the color LEDs to audio
input. Integrated high current driver can drive camera
flash LED or motor/vibra. Internal ADC can be used
for ambient light or temperature sensing. The flexible
SPI/I²C interface allows easy control of LP3954.
Small DSBGA package together with minimum
number of external components is a best fit for
handheld devices.
APPLICATIONS
• Cellular Phones
• PDAs, MP3 players
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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