CL1
CL1 is 90V 20 mA Simple Temperature-Compensated Constant-Current LED Driver IC manufactured by Microchip Technology.
Features
- 5V-to-90V Operating Range (VA- B)
- 20 m A ±5% at 45V (VA- B)
- - 8.5 µA/°C Typical Temperature Coefficient
- No External ponents (Two-Terminal Device)
- Can be Paralleled for Higher Current
Applications
- LED Driver
- Industrial Lamp Indicators
- Signage
- Accent Lighting
- Automotive
- Constant-Current Source
- Constant-Current Sink
General Description
The CL1 is a high-voltage temperature-pensated, constant-current source. The device is trimmed to provide a constant current of 20 m A ±5% at an input voltage of 45V. No external ponents are required. This device can be used as a two-terminal constant-current source or constant-current sink.
A typical application for the CL1 is to drive LEDs with a constant current of 20 m A. Multiple CL1s can also be used in parallel to provide higher currents, such as 40 m A, 60 m A and 80 m A. The device is available in SOT-89 packages.
Package Type
See Table 2-1 for pin information.
2018 Microchip Technology Inc.
3-lead SOT-89 (Top view)
NC VA VB
DS20006072A -page 1
Functional Block Diagram
Functional Circuit Diagram
Equivalent Block Diagram
Control Circuit and Temperature pensation
20m A 5%
DS20006072A -page 2
2018 Microchip Technology Inc.
Typical Application Circuit
Up to 90V + VLED(total)
ILED 20m...
