AA1726

Features:

Features
.16 constant current output channels
.Adjustable output current through external resistor
.Serial data IN / parallel data OUT
.Maximum output terminal voltage: 20V
.Output current: 5-90 mA
.Max clock frequency 25 MHz
.Built-in power on reset and thermal protection circuit
.Interlaced 30ns delay of output to lower bouncing noise
.I/O logic: Schmitt trigger input
.Constant-current accuracy (all outputs on)

between bits	between ICs	Condition
+/- 3%	+/- 6%	Iout=10~60mA

.Package: SOP24, SSOP24



Application

LED Displays
.LED Signboards
.Display Back-lighting



Pinout

Block Diagram

Description

General Description
The AA1726 is a low voltage; low current and constant-current drivers designed for LEDs and
LED displays. The output current can be set using an external resistor. As a result, all outputs
will have virtually the same current levels. This driver AA1726 incorporates a 16-bit constant current
output, a 16-bit shift register, a 16-bit latch and a gate circuit. The full-scale constant output
current of each channel will range from 5mA up to 90mA.