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