TLC5973D Datasheet, PDF (2/27 Pages) Texas Instruments – 3-Channel, 12-Bit, PWM Constant-Current LED Driver

TLC5973
SBVS225A – MARCH 2013 – REVISED MAY 2013
DESCRIPTION (CONTINUED)
LED
Lamp
Power
Supply
VLED
Device and
Controller
Power
Supply
VCC
GND
Controller
R_IREF
GND
IREF
Device
SDI
VCC
OUT0
OUT1
OUT2
SDO
Optional
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R_IREF
GND
IREF
Device
SDI
VCC
OUT0
OUT1
OUT2
SDO
Optional
Figure 2. Typical Application Circuit Example 2 (No Internal Shunt Regulator Mode)
Power
Supply
V_LED
GND
R_VCC
C_VCC
+5 V
Controller
R_IREF
GND
IREF
Device
SDI
VCC
OUT0
OUT1
OUT2
SDO
Optional
R_VCC
C_VCC
R_IREF
GND
IREF
Device
SDI
VCC
OUT0
OUT1
OUT2
SDO
Optional
Figure 3. Typical Application Circuit Example 3 (Internal Shunt Regulator Mode)
2
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