TLC5921DAPRG4

LED Driver 5V 32Pin HTSSOP EP T/R

description

The TLC5921 is a current-sink constant current driver incorporating shift register and data latch. The current value at constant current output can be set by one external register. The device also incorporates thermal shutdown TSD circuitry which turns constant current output off when the junction temperature exceeds the limit, and LED open detection LOD circuitry to report the LED was disconnected.

Drive Capability and Output Counts

  – 80 mA Current Sink x 16 Bits

Constant Current Output Range

  – 1 to 80 mA Current Value Setting for All Output Terminals Using External Resistor

Constant Current Accuracy

  – ±1% Typ

  – ±4% Max Maximum Error Between Bits, All Bits On

Voltage Applied to Constant Current Output Terminal

  – Minimum 0.6 V Output Current 40 mA

  – Minimum 1 V Output Current 80 mA

Data Input

  – Clock Synchronized 1 Bit Serial Input

Data Output

  – Clock Synchronized 1 bit Serial Output With Timing Selection

Input/Output Signal Level. . . CMOS Level

Power Supply Voltage. . . 4.5 V to 5.5V

Maximum Output Voltage. . . 17 V Max

Data Transfer Rate. . . 20 MHz Max

Operating Free-Air Temperature Range –20°C to 85°C

Available in 32 Pin HTSSOP DAP Package PD=3.9 W, TA = 25°C

LOD Function. . . LED Open Detection Error Signal Output at LED Disconnection

TSD Function. . . Thermal Shutdown Turn Output Off When Junction Temperature Exceeds Limit