TLC59291_16 Datasheet, PDF (1/46 Pages) Texas Instruments – 8/16-Channel, Constant Current LED Driver

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TLC59291
SLVSA96A – SEPTEMBER 2015 – REVISED MARCH 2016
TLC59291 8/16-Channel, Constant Current LED Driver with 7-bit Brightness Control Low
Quiescent Current and Full Self Diagnosis for LED Lamp
1 Features
•1 8/16 Constant-Current Sink Output Channels with
On/Off Control
• Current Capability:
– 1 - 40 mA (V_CC ≤ 3.6 V)
– 1 - 50 mA (V_CC > 3.6 V)
• Global Brightness Control: 7-Bit (128 Steps)
• Power-Supply Voltage Range: 3 V to 5.5 V
• LED Power-Supply Voltage: Up to 10 V
• Constant-Current Accuracy:
– Channel-to-Channel = ±3% (Typical)
– Device-to-Device = ±2% (Typical)
• Low Quiescent Current
• SOUT can be Configured for 8-Channel or 16-
Channel Output
• LED Open Detection (LOD)/LED Short Detection
(LSD) with Invisible Detection Mode (IDM)
• Output Leakage Detection (OLD) Detects 3 µA
Leak
• Pre-Thermal Warning (PTW)
• Thermal Shutdown (T_SD)
• Current Reference Terminal Short Flag (ISF)
• Power-Save Mode with 10-µA Consumption
• Undervoltage Lockout Sets the Default Data
• 2-ns Delayed Switching Between Each Channel
Minimizes Inrush Current
• Operating Temperature: –40°C to 85°C
2 Applications
• Industry LED Indicator
• Illumination
• LED Video Display
3 Description
The TLC59291 is a 8/16-channel constant current
sink LED driver. Each channel can be turned on-off
by writing data to an internal register. The constant
current value of all 16 channels is set by a single
external resistor and 128 steps for the global
brightness control (BC).
The TLC59291 has six type error flags: LED open
detection (LOD), LED short detection (LSD), output
leak detection (OLD), reference terminal short
detection (ISF), Pre thermal warning (PTW) and
thermal error flag (TEF). In addition, the LOD and
LSD functions have invisible detection mode (IDM)
that can detect those errors even when the output is
off. The error detection results can be read via a
serial interface port.
The TLC59291 has low quiescent current in normal
mode, it also has a power-save mode that sets the
total current consumption to 10 uA (typical) when all
outputs are off.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLC59291
VQFN (24)
4.00mm x 4.00mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit (Multiple Daisy Chained TLC59291s)
V_LED
Controller
DATA
SCLK
LAT
BLANK
SID read
R_IREF
OUT0 - - - - - - - - - - OUT15
SIN
SCLK
LAT
BLANK
IREF
TLC59291
IC1
SOUT
VCC
GND
GND
3
V_CC
GND
R_IREF
OUT0 - - - - - - - - - - OUT15
SIN
SCLK
LAT
BLANK
IREF
TLC59291
ICn
SOUT
VCC
GND
GND
V_CC
GND
1
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.