ELM186CxA120mA Laser Diode Driver

ELM186CxA is a bipolar IC with APC drive circuit for laser diode(LD) applications. It can drive up to 120mA of LD forward current. Laser output power is controlled at constant value by a function of APC. It consist of a band gap reference and an APC circuit. Laser power is adjusted by an external resistor which defines output laser power. ELM186CxA application circuit occupies only small area on PCB by SC-70-5 small package and a few external passive parts. Four versions, ELM186C1A, ELM186C2A, ELM186C3A and ELM186C4A are prepared to drive all kinds of laser diode modules(LDMs) which have 4 combinations of each pin’s polarity. All types of LDMs which have pins of LD cathode/LD anode and MD cathode/MD anode can be driven by a suitable version of ELM186CxA. ELM186CxA consumes 0.6mA typ, and operates from 3.0V to 12.0V VCC.

External adjustment for output laser power
Internal voltage reference	Typ.1.25V
Operation voltage	3.0V to 12.0V
Low power consumption	Typ.0.6mA
LD drive current	Max.120mA
Package	SC-70-5
Datasheet	ELM186-series