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TLC5960DARTIN/a30avai8-Channel LED Driver Controller with Integrated Intelligent Thermal Controller 38-TSSOP -40 to 85


TLC5960DAR ,8-Channel LED Driver Controller with Integrated Intelligent Thermal Controller 38-TSSOP -40 to 85FEATURES • Full Protection/Diagnostic Functions:23• 250kHz PWM Dimming – LOD: LED Open Detection• F ..
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TLC5960DAR
8-Channel LED Driver Controller with Integrated Intelligent Thermal Controller
TLC5960
VADJ
CTRL[1:4]
HVM[1:4]
XFLT
VREG5
VIN D1G1S1 D2 D8G2 G8S2 S8
Ch1 Ch2
DC/DC4
DC/DC3
DC/DC2
DC/DC1 VLED1
VLED4
TLC5960
www.ti.com
SBVS147 –SEPTEMBER 2010
Eight-Channel LED Driver
with Intelligent Headroom Voltage Monitor (iHVM™)
Checkfor Samples: TLC5960
1FEATURES • Full Protection/Diagnostic Functions:
23• 250kHz PWM Dimming – LOD: LED Open Detection Four Intelligent Headroom Voltage Monitor – LSD: LED Short Detection
(iHVM) Outputs – FOD: FET Open Detection Eight-Channel, High-Voltage LED Driver: – FSD: FET Short Detection 0.3% (typ) Accuracy Between Channels • Built-In Phase Shift Function Control Interface with Four PWM Inputs • 38-Pin TSSOP Package Easy-To-Use Analog Dimming Interface
DESCRIPTION

The TLC5960is an eight-channel PWM LED driver with four intelligent headroom voltage monitor (iHVM)
outputs. The LED drivers have scalable, high-voltage capability and provide 1% maximum current matching
accuracy between LED strings. To achieve optimal efficiency, the iHVM automatically optimizes the external
dc/dc converter output voltageto compensate for the forward-voltage variationsof the LED
Comparedtoa conventional HVM solution that requires several MOSFETs, capacitors, and resistors, the iHVM designedto use onlya single external resistor. The LED driver designis capableof upto 250kHz PWM
dimming, and also provides an analog brightness dimming interface. This device easily adaptsto various LED
and power configurations witha single voltage input rail. Full protection and diagnostic functions are providedto
protect the entire system, such as LED open/short detection (LOD/LSD), FET open/short detection (FOD/FSD)
and thermal shutdown (TSD).In caseof failure, the TLC5960 automatically disconnects the failed channel(s)
from the operating channels and pulls down the open drain fault buffer (XFLT)to signalan error status. iHVM™
Typical Application Circuit
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