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Solid-State LED Lighting


Datasheet

PDF

Software

Description

MSL2023/MSL2024

MSL2023/MSL2024 Complete

(file size: 1.75MB, 40 pages, revision D, updated: 02/2013)

2-String LED Driver with Individual PWM Dimming and Adaptive Headroom Control for High CRI LED Luminaires

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The Atmel® MSL2023 and MSL2024 are two-channel LED drivers. The MSL2023 is controlled and programmed by an I2C serial port to interface and utilize internal pulse width modulation (PWM) generators to drive both LED strings. The device also interfaces with microcontrollers via its I2C interface. The MSL2024 offers two PWM inputs to directly control the PWM dimming for each LED string. This architecture allows for easy implementation with any microcontroller, supporting dimming frequency from 60Hz to 10KHz.

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

String Phase Shift:

Yes

Linear Drivers:

1

Switching Drivers:

1

FETs:

External