Datasheet > ELM185-SERIES

ELM185-SERIES

更新时间： 2024-02-12 07:01:57

品牌	Logo	应用领域
ELM		/
页数	文件大小	规格书
10页	919K
描述
Laser Diode Driver

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ELM185-SERIES 数据手册

Laser Diode Driver

ELM185xB

■General description

ELM185xB is a bipolar type laser diode driver IC with internal APC circuit which consists of a reference

voltage source, an error amplifier, and a thermal shutdown circuit for protection. With reference voltage source,

the output of laser is comparatively stable during the change of power voltage and temperature. With its small

package, ELM185xB is possible to be assembled within small areas on the board. When control loop damage

occurs, ELM185xB is also capable of limiting the laser drive current; limited current value can be adjusted by

an external resister on ILM. KLD output drive current can reach up to 400mA (max.). For avoidance of damage

of laser diode, the Zener diode which is included in ELM185xB is able to absorb 8V surge between VCC-GND.

ELM185xB is able to drive various types of laser diode modules (LDM); please refer to applicable laser

diode modules for further information. ELM185xB can not only drive laser diode by APC control, but also

by constant current with internal constant current setup function; therefore, ELM185xB can also be used as

constant current driver for laser diode, high luminous LED, etc.

■Features

• Low voltage operation

: 2.0V

• Low current consumption operation : Typ.1mA

• Laser drive current

• Internal voltage reference

• Thermal shutdown circuit

• Package

: Max.400mA

: Typ.0.30V

: Typ.150°C

: SOT-26, VSON6-2x2

• Zener diode for surge absorption included

■Application

• Driver for laser diode in laser pointer, laser level, etc.

• Driver for constant load current such as LED, etc.

■Maximum absolute ratings

Parameter

Operation voltage

Symbol

VCC

Vcmp

Vilm

Limit

Unit

GND-0.3 to 7.0

GND-0.3 to 18.0

GND-0.3 to VCC+0.3

500

CMP voltage

ILM voltage

KLD voltage

AMD voltage

KLD current

Vkld

Vamd

Ikld

300 (SOT-26)

1000 (VSON6-2x2)

-30 to +85

Power dissipation

Operation temperature

Storage temperature

Top

°C

Tstg

-40 to +125

Rev.1.0

10 - 1

12 3 4 5 6 7...10

中文翻译

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