SP7680EB Exar Corporation, SP7680EB Datasheet
SP7680EB
Specifications of SP7680EB
Related parts for SP7680EB
SP7680EB Summary of contents
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Solved Complete Backlight Solution FEATURES Complete Backlight Solution Separate control for 4 main, 2 sub, and keypad LEDs Built-in 6-bit DAC for precise current setting serial interface Data is stored in shutdown 1x and ...
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These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods ...
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PARAMETER Power-up time from Shutdown (Note 3) Soft Start Interval (within 1X mode) (Note 4) Soft Start Interval (transition 1X to 1.5X) (Note 5) Shutdown Supply Current @ 25 °C Shutdown Supply Current @ 85 °C Short LED threshold Thermal ...
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Note 3: Power-up time from Shutdown data input START ADDRESS A STATUS V OUT I OUT Note 4: Soft Start Interval (within 1x Mode data input (Final state) START ADDRESS A STATUS ILED The ...
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Operating Circuit, V =2. Values are at V =3.3V, T =+25 ° PARAMETER SYMBOL Serial Clock Frequency Bus Free Time Between a STOP and a START Hold Time, Repeated START Condition Repeated ...
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PIN # PIN NAME Input voltage for the regulator. Connect a 2.2μF decoupling capacitor between this pin and ground. Connect an LED between each pin and V controlled by the serial interface. The current level through each ...
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The SP7680 is a charge pump regulator designed for converting an input voltage of 2.7V to 5.5V to drive backlight white LEDs used in portable applications. It has a total of 7 LED driver outputs consisting of 4 Main, 2 ...
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V = 3.6V, Typical Application Circuit connected not V . OUT IN Output Efficiency WLEDs IN 100 ILED=15mA,Vf=3.4V ILED=20mA,Vf=3.6V 65 ILED=25mA,Vf=3.8V 60 3.0 3.3 ...
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V = 3.6V, Typical Application Circuit Scope Photo #1 Startup from Shutdown ch4=I Scope Photo #3 Soft start Interval (1X to 1.5X) ch1=V I ch4= OUT Scope Photo #5 Startup in 1.5X Mode 6 LEDs at 20mA V ...
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I C Specifications 2 The I C protocol defines any device that sends data to the bus as a transmitter and any device that reads the data as a receiver. The device that controls the data transfer is known ...
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WZ WP State Shutdown and 0 0 reset registers to 00000000 Shutdown - keep 0 1 register contents Standby - keep register contents – bandgap and other 1 0 analog circuits active, Vin shorted to Vout through internal switch 1 ...
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MAIN, SUB and AUX registers In the MAIN, SUB and AUX registers bits B7, B6, B5, B4, B3 and B2 represent the DAC codes D5-D0 used to set the LED current in the MAIN, SUB and AUX channels. Bits B1 ...
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LED Selection The SP7680 is designed as a driver for backlight white LEDs, but is capable of driving other LED types with forward voltage specifications ranging from 2.0V to 3.8V. LED applications may include main and sub LCD display backlighting, ...
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Ceramic Capacitor Materials Capacitors with large output values are typically composed of X7R, X5R, Z5U, or Y5V dielectric materials, but Z5U and Y5V recommended since they have a large change in value with temperature. X5R capacitors are recommended since they ...
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Sept 13-07 revI SP7680: Complete Backlight Solution PACKAGE: 3x3mm 16 pin QFN Page 15 © 2007 Sipex Corporation ...
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... Part Number Status Temp ºC SP7680ER1-L Active -40 SP7680ER1-L/TR Active -40 SP7680EB Active -40 For further assistance: Email: WWW Support page: Sipex Application Notes: Solved by TM Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein ...