TLC6C5712-Q1 Datasheet, PDF (1/68 Pages) Texas Instruments – 12-Channel, Full-Diagnostic, Constant-Current-Sink LED Driver

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TLC6C5712-Q1
SLVSCO9A – AUGUST 2015 – REVISED AUGUST 2015
TLC6C5712-Q1 12-Channel, Full-Diagnostic, Constant-Current-Sink LED Driver With 8-Bit
Dot Correction
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level H3A
– Device CDM ESD Classification Level C4B
• 12 Power DMOS-Transistor Output Channels
– Maximum Constant Current up to 75 mA,
Programmable through External Resistor
– Maximum Output Voltage up to 7 V
– Maximum Dropout Voltage:
– 0.75 V at 50 mA per Channel
– 1.2 V at 75 mA per Channel
• Excellent Output Constant-Current Accuracy:
– Channel-Channel Difference: < ±3% (Max.)
– Device-Device Difference: < ±3% (Max.)
– 8-Bit, 256-Step Linear Dot Correction for Each
Channel
• Flexible External PWM Dimming Support
– 6 PWM Inputs With Frequency Supervision
– Programmable Channel Mapping Capability
through SPI
• Protection and Diagnostics
– Adjacent-Pin Short Detection
– Open-Load, Short-to-GND, Shorted-LED,
Detection for Both Activated and Deactivated
State
– Thermal Prewarning and Shutdown
– Open-Drain Error Retorting
– LED Weak Supply Diagnostics
– Reference Resistor Open or Short Detection
and Protection
– SPI Register Lock for Content Protection
– Force Error for SPI Integrity Diagnostics
• Small and Thermally Effective 28-Pin HTSSOP
PowerPAD™ Package
2 Applications
• Cluster Tell-Tale Indicators
• Panel and Button Backlighting
• Bar-Graph LEDs
• Shifter PRNDL Indicators
• Sequential Turn Indicators
1
3 Description
In automotive cluster and other safety-critical LED
driver applications, the performance demand for
multi-channel LED is increasing to achieve
consistency of LED brightness and color temperature.
System-level safety considerations require detection
capability for various fault scenarios and thus
increase system complexity.
The TLC6C5712-Q1 device is a 12-channel constant-
current-sink LED driver. The precision output current
with 8-bit dot correction makes the TLC6C5712-Q1
device a perfect solution to correct LED brightness
and color temperature variation. Advanced protection
and diagnostics for each component improve system-
level robustness and ease safety-oriented design. Six
PWM inputs with programmable mapping support
different LED color-dimming configurations and
provide a high dimming ratio. A 16-bit serial-
peripheral interface (SPI with diagnostics supports
multiple devices in a daisy chain and eases the
system-level design.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLC6C5712-Q1
HTSSOP (28)
4.40 mm × 9.70 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
3-V to 5.5-V
Supply Voltage
V_CC
ERR
SENSE
LATCH
SCK
OUT0
V_(SUPPLY)
SDI
OUT1
SDO
TLC6C5712-Q1
V_F
PWM0
OUT9
PWM5
R_{(IREF) IREF}
OUT10
OUT11
GND
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.