SP6686 View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

SP6686

400mA Buck/Boost Charge Pump LED Driver

Exar Corporation 

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SP6686

400mA Buck/Boost Charge Pump LED Driver

Fig. 16: Battery Current vs Supply Voltage

D1=AOT2015HPW-1915 LED, RSENSE=0.3Ω

RSET=106kΩ, CIN=2.2µF, CFC=0.47µF,COUT=1µF

Fig. 17: Battery Current vs Supply Voltage

D1=AOT3228HPW0303B LED, RSENSE=0.3Ω

RSET=140kΩ, CIN=2.2µF, CFC=0.47µF,COUT=1µF

Fig. 18: Startup Torch

VIN=3.6V, VOUT=3.1V, CIN=4.7µF, CFC=0.47µF,COUT=2.2µF

Fig. 19: Startup Flash

VIN=3.6V, VOUT=3.5V, CIN=4.7µF, CFC=0.47µF,COUT=2.2µF

Fig. 20: Torch in 1x to Flash in 1x Mode

VIN=4.2V, CIN=4.7µF, CFC=0.47µF,COUT=2.2µF

Fig. 21: Torch in 1x to Flash in 2x Mode

VIN=3.6V, CIN=4.7µF, CFC=0.47µF,COUT=2.2µF

© 2009 Exar Corporation

7/12

Rev. 2.0.0

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