SP6682EU-L Exar Corporation, SP6682EU-L Datasheet
SP6682EU-L
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SP6682EU-L Summary of contents
Page 1
... IC disconnects the output from the input and draws less than 1.5μA current. The SP6682 is offered in a 10-pin MSOP package, and a small 10-Pin DFN Package. TYPICAL APPLICATION DIAGRAM Fig. 1: SP6682 LCD Backlighting Application Diagram Exar Corporation 48720 Kato Road, Fremont CA 94538, USA ...
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... Shutdown Current Oscillator Frequency VFB Reference Voltage Charge Pump Output Resistence V Threshold Voltage MODE Hysteresis for Mode Transition Voltage V Pin Current MODE EN/PWM Logic Low EN/PWM Logic High EN/PWM Pin Current FB Pin Current V Turn-On Time OUT PIN ASSIGNEMENT © 2009 Exar Corporation ...
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... ORDERING INFORMATION Temperature Part Number Range SP6682EU-L -40°C≤T ≤+85°C A SP6682EU-L/TR -40°C≤T ≤+85°C A SP6682ER-L -40°C≤T ≤+85°C A SP6682ER-L/TR -40°C≤T ≤+85°C A “Y” = Year – “WW” = Work Week – “X” = Lot Number © 2009 Exar Corporation ...
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... TYPICAL PERFORMANCE CHARACTERISTICS All data taken 25° 60mA, unless otherwise specified - Schematic and BOM from Application Information A O section of this datasheet. Fig. 3: Output Voltage Turn-on Time Fig Mode Voltage Ripple, V Fig. 7: x1.5 Mode Voltage Ripple, V © 2009 Exar Corporation Fig. 4: Power Efficiency vs Input Voltage =2 ...
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... Fig. 9: Brightness vs. Input Voltage Fig. 11: I vs. V OUT © 2009 Exar Corporation 5/ Fig. 10: Brightness vs. Duty Cycle Rev. 2.0.0 ...
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... MODE mode comparator which sets the logic state of the mode selec-tion outputs to the x2 or x1.5 modes compared to a 1.25V bandgap MODE voltage. For example, if 158KΩ/100KΩ divider, the mode will change at 2. 3.23V. A comparator-based © 2009 Exar Corporation ...
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... In Figure 14, the SP6682 was used to drive a 2-wire white LED module without internal series resistors as a current source. The bias resistor RB is selected to regulate the total current of the white LED module in-stead of the current of single LED as in Figure 12. © 2009 Exar Corporation ...
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... Murata GRM188R60J225KE01D Murata GRM219R60J475KE01D RIGHTNESS ONTROL SING Dimming control can be achieved by applying a PWM control signal to the EN/PWM pin. The brightness of the white LEDs is con-trolled by increasing and decreasing the duty cycle of the PWM signal. While the operating frequency © 2009 Exar Corporation ...
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... Fig. 17: Increasing Brightness Matching P E OWER FFICIENCY The efficiency of driving the white LEDs can be calculated by: × × η η × × × © 2009 Exar Corporation Where V I are the forward voltage and operating F current of White LEDs ...
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... TYPICAL APPLICATION SCHEMATICS LCD B A ACKLIGHT PPLICATION AMERA LASH PPLICATION © 2009 Exar Corporation 10/ Rev. 2.0 ...
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... PACKAGE SPECIFICATION 10- PIN MSOP © 2009 Exar Corporation 11/ Rev. 2.0 ...
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... PIN DFN © 2009 Exar Corporation 12/ Rev. 2.0 ...
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... While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...