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TLC5971RGET Datasheet(PDF) 8 Page - Texas Instruments |
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TLC5971RGET Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 37 page  IREF GND OUTR0 OUTG0 OUTB0 OUTR1 OUTG1 OUTB1 SDTI SCKI VREG VCC OUTB3 OUTG3 OUTR3 OUTB2 OUTG2 OUTR2 SDTO SCKO 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 PowerPAD (BottomSide) SDTI SCKI NC (1) NC SCKO SDTO GND NC IREF VREG NC VCC 1 2 3 4 5 6 18 17 16 15 14 13 ThermalPad (BottomSide) TLC5971 SBVS146 – AUGUST 2010 www.ti.com PIN CONFIGURATIONS PWP PACKAGE RGE PACKAGE HTSSOP-20 PowerPAD QFN-24 (TOP VIEW) (TOP VIEW) (1) NC = not connected TERMINAL FUNCTIONS TERMINAL NAME PWP RGE I/O DESCRIPTION SDTI 9 1 I Serial data input for the 224-bit shift register Serial data shift clock input. Data present on SDTI are shifted to the LSB of the 224-bit shift register with the SCKI rising edge SCKI 10 2 I Data in the shift register are shifted toward the MSB at each SCKI rising edge. The MSB data of the shift register appear on SDTO. Serial data output of the 224-bit shift register. SDTO 12 6 O SDTO is connected to the MSB of the 224-bit shift register. Data are clocked out at the SCKI rising edge. Serial data shift clock output. SCKO 11 5 O The input shift clock signal from SCKI is adjusted to the timing of the serial data output for SDTO and the signal is then output at SCKO. Internal linear voltage regulator output. A decoupling capacitor of 1 µF must be connected. This output can be used for external devices VREG 20 15 I/O as a 3.3-V power supply. This terminal can be connected with the VREG terminal of other devices to increase the supply current. Also, this pin can be supplied with 3 V to 5.5 V from an external power supply by connecting it to VCC. Maximum current programming terminal. A resistor connected between IREF and GND sets the maximum current for every IREF 1 16 I/O constant-current output. When this terminal is directly connected to GND, all outputs are forced off. The external resistor should be placed close to the device. OUTR0 3 19 O RED constant-current outputs. OUTR1 6 22 O Multiple outputs can be configured in parallel to increase the constant-current capability. OUTR2 13 7 O Different voltages can be applied to each output. OUTR3 16 10 O OUTG0 4 20 O GREEN constant-current outputs. OUTG1 7 23 O Multiple outputs can be configured in parallel to increase the constant-current capability. OUTG2 14 8 O Different voltages can be applied to each output. OUTG3 17 11 O 8 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): TLC5971 |
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