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FAN5617 Datasheet(PDF) 6 Page - Fairchild Semiconductor

Part No. FAN5617
Description  High-Efficiency, Constant-Current LED Driver with TinyWire Brightness Control
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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FAN5617 Datasheet(HTML) 6 Page - Fairchild Semiconductor

 
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© 2006 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5617 Rev. 1.0.1
Block Diagram
RSET
CAP1
CURRENT LIMITERS
DATA
VIN
LINEAR
REG
OSC
VOLTAGE
SELECT
EN
IREF
VOLTAGE
DETECT
CAP2
VOUT
VOUT
POWER
GOOD
UVLO
PGOOD
PGOOD
REGULATOR
MODE
CHANGE
VIN
CURRENT
SETTING
AND
CONTROL
LOGIC
GND
PGND
CHARGE PUMP
CONTROL AND
SWITCHES
REFERENCE
GENERATOR
Figure 9. IC Block Diagram
VIN
CAP1
GND
C
OUT
VIN
CAP1
GND
CAP2
C
OUT
Figure 10. 2:1 Charge Pump Configuration
VOUT = 2 X VIN
Figure 11. 3:2 Charge Pump Configuration
VOUT = 1.5 X VIN


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