CL2

Temperature Compensated Unipolar Current Regulator with Enable pin

The CL1 and CL2 product family are temperature-compensated unipolar current regulators with versions available from 5mA to 30mA. They are designed to be used with voltages from 6V to 250V DC and the temperature coefficient is optimized from –40C to 125C. SimpleChips’ unipolar current regulator can source or sink constant current. For high voltage applications a heat sink can be connected to the Ground pin (Source), or the device can be mounted on a larger copper plate used as a heat sink. These devices can be paralleled for larger current drives or connected back-to-back for AC current limiting function.

Features

Limits and regulates current.
5mA, 10mA, 15mA, 20mA, 30mA versions.
Rejects 50Hz / 60Hz ripple.
Fast 2µSec settling time.
<15% Overshoot.
No external components.
250V Maximum Operating Voltage.
Can be paralleled for higher current.

Applications

Serial LED drivers for industrial lamp indicators, signage, accent lighting, and automotive lighting.
Power limiter in transformer input stage (mounted back to back).
Constant current source or sink.
Current reference or level translator.
Laser diode driver for VCSELs used in Optical Networking.

Functional Block Diagram

Terminal Definition

Terminal Name	Pin No.	Type	Description
Sink	1	HV Input	Sinks the load current
Source	2	VH Input	Usually Ground. Sources the loa.d current
Enable	3	Input	Enables current flow between Sink and Source

CL2

Temperature Compensated Unipolar Current Regulator with Enable pin

Features

Applications

Functional Block Diagram

Terminal Definition

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