ELM186 Datasheet, PDF (1/7 Pages) ELM Technology Corporation – 120mA laser diode driver

ELM186CxA 120mA laser diode driver
■General description
http://www.elm-tech.com
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.
■Features
• 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
■Application
• Laser pointers
• Laser levels
• Other LD applications
■Maximum absolute ratings
Parameter
Operation voltage
Power dissipation
Operation temperature range
Storage temperature range
Symbol
Vcc
Pd
Top
Tstg
Limit
Unit
13.0
V
300
mW
-40 to +85
°C
-55 to +150
°C
■Selection guide
ELM186CxA-x
Symbol
a
Package
C: SC-70-5
1 : type1
2 : type2
b
Pin configuration type 3 : type3
4 : type4
(Refer to pin configuration)
c
Product version A
d
Taping direction S, N: Refer to PKG file
ELM186C x A - x
↑↑↑ ↑
abc d
7- 1
Rev.1.0