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TLC5973 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
描述:
三通道 12 位 PWM 恒流 LED 驱动器
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TLC5973数据手册
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GND
VCC
Controller
OUT0
SDO
SDI
VCC
GND
IREF
OUT1
OUT2
Device
OUT0
SDO
SDI
VCC
GND
IREF
OUT1
OUT2
Device
R
IREF
R
IREF
Power
Supply
(5 V)
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TLC5973
SBVS225B –MARCH 2013–REVISED MAY 2014
TLC5973 3-Channel, 12-Bit, PWM Constant-Current LED Driver
with Single-Wire Interface (EasySet™)
1 Features 2 Applications
This device is targeted towards one application.
1
• Three Constant Sink Current Channels
The primary application for this device is for RGB
• Current Capability:
LED cluster lamp displays.
– 2 mA to 35 mA per Channel (VCC ≤ 4.0 V)
– 2 mA to 50 mA per Channel (VCC > 4.0 V)
3 Description
• Grayscale (GS) Control with PWM:
The TLC5973 is an easy-to-use, 3-channel, 50-mA
constant sink current LED driver. The single-wire,
– 12-Bit (4096 Steps)
3-Mbps serial interface (EasySet) provides a solution
• Single-Wire Interface (EasySet)
for minimizing wiring cost. The LED driver provides
• Power-Supply (VCC) Voltage Range:
12-bit pulse width modulation (PWM) resolution. The
display repeat rate is achieved at 2.9 kHz (typ) with
– 3 V to 6 V
an integrated 12-MHz grayscale (GS) clock oscillator.
• OUT Pins Maximum Voltage: Up to 21 V
The driver also provides unlimited cascading
• Integrated Shunt Regulator
capability.
• Data Transfer Maximum Rate:
All output sink constant currents can be set by an
– Bits per Second (bps): 3 Mbps
external resistor. The TLC5973 has an internal shunt
• Internal GS Clock Oscillator: 12 MHz (typ)
regulator that can be used for higher VCC power-
supply voltage applications.
• Display Repeat Rate: 2.9 kHz (typ)
• Output Delay Switching to Prevent Inrush Current
Device Information
(1)
• Unlimited Device Cascading
DEVICE NAME PACKAGE BODY SIZE
• Operating Temperature: –40°C to 85°C
TLC5973 SOIC (8) 4.9 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
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Typical Application Circuit Example
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.
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