FEATURES

 Power Supply Voltage Range: 3.1V ∼ 6V

 High Efficiency: ≥ 90

 Maximum Output Current: 3A

 Current Output Noise: 4.48μAP-P@0.1Hz ∼ 10Hz

 High Stability: ± 8mA@3A for entire temperature

 Loop Good Indication

 Compact Size

 Fully shielded

 100 Lead (Pb)-free and RoHS Compliant

DESCRIPTION

This laser driver, ATLS3A201D, is an electronic module

designed for driving diode lasers by an up to 3A constant

current with high efficiency, low noise, high stability, high

reliability, zero EMI, and small package. Figure 1 shows the

physical photo of the ATLS3A201D.

It provides these the functions: laser constant current control,

laser current monitoring, over current and thermal protection,

laser current control indication, laser diode status indication,

soft start, and shut down.

It comes with a high stability low noise 2.5V voltage

reference. This voltage can be used by a POT

(Potentiometer), or a DAC (Digital to Analog Converter) to

set the voltage on the LIS pin for programming the output

current, and, at the same time, by an ADCs (Analog to

Digital Converters) to measure the voltage on the LIO pin

for monitoring the output current.