7 Channel Complete Backlight LED Driver

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The complete backlight solution.

The SP7680 is a complete backlight display solution that is designed to independently control LEDs for main and auxiliary displays as well as the keypad. A two line I²C serial interface allows a simple way to adjust each current individually in order to provide ultimate flexibility in driving LEDs. The data is loaded into internal registers upon power up and stored while in shutdown. When the chip is enabled, the stored values set the LED currents. Extra low 33µA LSB allows trickle current through the LEDs for non-reflecting LCD displays. The SP7680 automatically detects 1x or 1.5x operation for optimal efficiency.

 

FEATURES Complete backlight solution Separate control for 4, 2 and 1 channel Built-in 6-bit DAC for precise current setting I2C serial interface Data is stored in shutdown 1x and 1.5x mode operation with automatic switchover Very low dropout at 200mV typ Very low 31µA current (LSB) Small 16-pin 3x3 QFN package 2MHz switching frequency reduces external components Power-saving shutdown mode of 1µA Built-in over-temperature protection

APPLICATIONS Cell phone backlight + keypad PMP backlight MP3 player backlight

 

 

 

Popular Configurations

 

 

 

• 4 – 2 – 1
• 4 Main (2” – 2.2”)
• 2 Sub or 2 Torch @ 31mA x 2
• 1 indicator or 1 keypad

 

 

• 5 – 2
• 5 Main (2.2” – 2.5”)
• 2 Sub or 2 Torch @ 31mA x 2

 

 

 

 

 

 

 

 

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
SP7680EB		Evaluation Board for SP7680
SP7680ER1-L		7 Channel Complete Backlight LED Driver

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