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| LM3463_12 Datasheet, PDF (32/40 Pages) Texas Instruments – LM3463 Dynamic Headroom Controller with Thermal Control Interface and Individual Channel Dimming Control | |||
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LM3463
SNVS807 â MAY 2012
www.ti.com
Figure 24. LM3463 typical application circuit for true analog dimming control
VRAIL
High Power LED Arrays
VIN
Voltage output
Primary power supply
Voltage
feedback pin
RDHC
RFB1
CIN
RFB2
GND
Vcc
RLMT1
D1
EN
Faultb
GND
CVCC
RLMT2
RFS
RIBIAS
CDHC
OutP
EN
Faultb
MODE
DIM01
DIM23
DIM4
DIM5
VCC
CFLT
DRVLIM
FS
ISR
CDHC
FCAP
VLedFB
U1
VIN
DR0
DR1
DR5
GD0
LM3463
GD1
GD5
SE5
GND
CVREF
RIADJ1
VREF
IOUTADJ
CLKOUT SYNC GND
SE1
SE0
REFRTN
RIADJ2
GND REFRTN
LED1
LED2
Q1
Q2
RISNS1
RISNS2
GND
GND
REFRTN
Connections for
cascade operation
LED6
Q6
RISNS6
GND
32
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