Driver. TLC5960 Datasheet

TLC5960 Datasheet PDF


Part

TLC5960

Description

Eight-Channel LED Driver

Manufacture

etcTI

Page 30 Pages
Datasheet
Download TLC5960 Datasheet


TLC5960 Datasheet
TLC5960
www.ti.com
Eight-Channel LED Driver
with Intelligent Headroom Voltage Monitor (iHVM™)
Check for Samples: TLC5960
SBVS147 – SEPTEMBER 2010
FEATURES
1
23 250kHz PWM Dimming
• Four Intelligent Headroom Voltage Monitor
(iHVM) Outputs
• Eight-Channel, High-Voltage LED Driver:
– 0.3% (typ) Accuracy Between Channels
• Control Interface with Four PWM Inputs
• Easy-To-Use Analog Dimming Interface
• 10% to 100% Analog Brightness Dimming
• Integrated 5V Internal Regulator
• Integrated Power-On Reset (POR) Circuitry
• Full Protection/Diagnostic Functions:
– LOD: LED Open Detection
– LSD: LED Short Detection
– FOD: FET Open Detection
– FSD: FET Short Detection
• Built-In Phase Shift Function
• 38-Pin TSSOP Package
APPLICATIONS
• LED Backlights for LCD-TV
• High-Current LED Lighting
DESCRIPTION
The TLC5960 is 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 voltage to compensate for the forward-voltage variations of the LED
Compared to a conventional HVM solution that requires several MOSFETs, capacitors, and resistors, the iHVM
is designed to use only a single external resistor. The LED driver design is capable of up to 250kHz PWM
dimming, and also provides an analog brightness dimming interface. This device easily adapts to various LED
and power configurations with a single voltage input rail. Full protection and diagnostic functions are provided to
protect the entire system, such as LED open/short detection (LOD/LSD), FET open/short detection (FOD/FSD)
and thermal shutdown (TSD). In case of failure, the TLC5960 automatically disconnects the failed channel(s)
from the operating channels and pulls down the open drain fault buffer (XFLT) to signal an error status. iHVM™
DC/DC4
DC/DC3
DC/DC2
DC/DC1
VLED1
VLED4
Ch1 Ch2
Ch8
VIN D1 G1 S1
HVM[1:4]
CTRL[1:4]
EN
VADJ
D2 G2 S2
TLC5960
D8 G8 S8
XFLT
VREG5
Typical Application Circuit
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
iHVM is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated

TLC5960 Datasheet
TLC5960
SBVS147 – SEPTEMBER 2010
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PRODUCT
TLC5960
PACKAGE/ORDERING INFORMATION(1)
PACKAGE-LEAD
PACKAGE DESIGNATOR
TSSOP-38
DA
ORDERING NUMBER
TLC5960DA
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the
device product folder at www.ti.com.
ABSOLUTE MAXIMUM RATINGS(1)
Over operating free-air temperature range (unless otherwise noted).
Voltage (2)
Temperature
Electrostatic Discharge Rating(3)
VIN, CTRL2, CTRL4
S1 to S8, D1 to D8
EN, CTRL1, CTRL3, VADJ, VREG5, G1 to G8, XFLT, HVM1 to
HVM4
Operating virtual junction, TJ
Storage, Tstg
Human Body Model (HBM, JESD22-A114)
Charged Device Model (CDM. JESD22-C101)
Machine Model (MM)
VALUE
MIN
–0.3
–0.3
MAX
30
38
–0.3 6.0
–40 +150
–55 +150
2
1000
200
UNIT
V
V
V
°C
°C
kV
V
V
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods my affect device reliability.
(2) All voltages are with respect to network ground terminal.
(3) ESD testing is performed according to the respective JESD22 JEDEC standard.
THERMAL INFORMATION
qJA
qJCtop
qJB
yJT
yJB
qJCbot
THERMAL METRIC(1)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
TLC5960
DA
38 PINS
71.2
21.8
43.6
0.5
38.7
N/A
UNITS
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
DISSIPATION RATINGS
PACKAGE
TSSOP-38 (DA)
OPERATING FACTOR
ABOVE TA = +25°C
14mW/°C
TA < +25°C
POWER RATING
1404mW
TA = +70°C
POWER RATING
770mW
TA = +85°C
POWER RATING
560mW
2 Submit Documentation Feedback
Product Folder Link(s): TLC5960
Copyright © 2010, Texas Instruments Incorporated


Features Datasheet pdf TLC5960 www.ti.com Eight-Channel LED D river with Intelligent Headroom Voltage Monitor (iHVM™) Check for Samples: T LC5960 SBVS147 – SEPTEMBER 2010 FEA TURES 1 •23 250kHz PWM Dimming • Fo ur Intelligent Headroom Voltage Monitor (iHVM) Outputs • Eight-Channel, High -Voltage LED Driver: – 0.3% (typ) Acc uracy Between Channels • Control Inte rface with Four PWM Inputs • Easy-To- Use Analog Dimming Interface • 10% to 100% Analog Brightness Dimming • Int egrated 5V Internal Regulator • Integ rated Power-On Reset (POR) Circuitry Full Protection/Diagnostic Functions : – LOD: LED Open Detection – LSD: LED Short Detection – FOD: FET Open D etection – FSD: FET Short Detection Built-In Phase Shift Function • 38 -Pin TSSOP Package APPLICATIONS • LED Backlights for LCD-TV • High-Current LED Lighting DESCRIPTION The TLC5960 is an eight-channel PWM LED driver with four intelligent headroom voltage moni tor (iHVM) outputs. The LED drivers have scalable, high-voltage capability and provide 1% maximum curre.
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