FEATURES

High Efficiency: ≥90

Constant Current Output

Maximum Output Current: 2A

Current Output Noise: 3.71μAP-P @ 0.1Hz-10Hz

High Stability: 100ppm/°C

PWM Switching Frequency Synchronizable

Zero EMI

Compact Size

DIP Package Available

100 Lead (Pb)-free and RoHS Compliant

SMT Package Available

DESCRIPTION

This laser driver is an electronic module designed for

driving diode lasers with up to 2A constant current, high

efficiency, low noise, high reliability, zero EMI, and small

package. Figure 1 shows physical photo of ATLS2A202D.

It provides these the functions: laser constant current control,

laser current monitoring, over current and thermal protection,

laser current output indication, laser diode status indication,

soft start, and shut down.

It comes with a high stability low noise 2.5V voltage reference

output which can be used for setting the output current. The

reference output can also be used for the ADCs (Analog to

Digital Converters) and/or DACs (Digital to Analog

Converters).

The frequency synchronization of this laser driver allows using

an external digital signal to synchronize the internal PWM

output stage of the laser driver, to eliminate frequency beating

interferences between the laser drivers and other switch mode

electronic circuits on the same PCB.

The external signal needs to be in the range of 520kHz to

800kHz.

If other frequency is needed, contact us, we may be able to

adjust the internal PWM frequency for you. The default

switching frequency of the internal PWM output stage is

500kHz.