LP3954 Texas instruments

LP3954

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LP3954

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Описание

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.

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

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Number of channels	13
LED current per channel (mA)	25.5
LED configuration	Parallel
Program memory	Yes
Topology	Boost
Programmable ramp control	Yes
Vin (min) (V)	3
Vin (max) (V)	7.2
Iout (max) (A)	0.4
Features	Analog/PWM mixed dimming, Constant current, I2C control
Iq (typ) (mA)	0.4
Shutdown current (ISD) (typ) (µA)	1
Operating temperature range (°C)	-30 to 85
Rating	Catalog