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Solid-State LED Lighting

Datasheets

LED Driver MSL2021

LED Driver MSL2021 Complete
( file size: 1.67MB , 41 pages , updated: 02/2013 )

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The Atmel® MSL2021, a two-channel LED driver, is the first LED driver to offer integrated temperature compensation for the color LED string, simplifying the design of high color rendering index (CRI) LED lamps. With integrated temperature compensation, you can maintain your desired correlated color temperature (CCT) over the entire LED lamp temperature range. Using the device’s look-up table, programmed in its integrated EEPROM, you can vary the LED string currents to follow the desired CCT compensation curve.

Block Diagram

LED Block Diagram for MSL2021/MSL2023/MSL2024

Key Parameters

Parameter
Value

Interface Type:

PWM + I2C

Number of Strings:

2

Max Current per String:

No Limit (External MOSFETs)

LEDs per String:

No Limit (External MOSFETs)

String Current Resolution:

8 bits

String PWM Dimming Resolution:

12 bits

Temperature Compensation:

Internal Look Up Table

Linear Drivers:

1

Switching Drivers:

1

FETs:

External