Get Started

We'll tell you all you need to know to start evaluating and working with this product.

Dimmable MR16 Lamp Development Kit

Dimmable MR16 Lamp Development Kit


» Learn More
Atmel MSL2021/MSL2023/MSL2024 LED Drivers

Learn about Atmel MSL2021/23/24 LED drivers


» Learn More

Atmel LED Driver Technology

Atmel® LED drivers are based on system-centric, mixed-signal LED driver technology for backlighting and solid-state lighting (SSL) applications. This broad-based and rapidly growing market includes LCD TVs, PC monitors, specialty panels (industrial, military, medical, avionics, etc.) and general illumination for the commercial, residential, industrial and government market segments. LED drivers utilize a proprietary and patented combination of analog and digital circuit techniques and power control schemes.

These products comprise a system-centric solution for local and global dimming, power management, signal conditioning and smart interfacing. This approach allows electronic equipment manufacturers to significantly enhance product features, while improving power efficiency, reliability and cost/performance.

LED Drivers Devices

Device Family Summary Benefit Applications Technologies Key Parameters

Linear and Switching Driver Solution

High LED Current Accuracy

Wide Dimming Range

Synchronizes to TV Video Signals

Factory-Calibrated Settings Stored in EEPROM

Solid State Lighting

High CRI Designs

External AC-DC and DC-DC Control and External Current Sinks

Adaptive Power Control Scheme

Correlated Color Temperature (CCT) Compensation Circuitry

External Power Supply

Efficiency Optimizer Control

External PWM Inputs/Serial Interface

EEPROM

Allows for higher power operation up to 2A per channel

Supports up to 250V string voltage

Widest Dimming Range for zone / regional dimming

Controls LED Supply to reduce any headroom

Synchronizes to TV video Signals

Allows user to program startup settings

Television Direct Backlight

Monitor Backlight

 External DC-DC Control and Internal Current Sinks

External DC-DC Supply

12-bit PWM Dimming

Efficiency Optimizer

Video Sync

EEPROM
Allows for higher power operation up to 100mA per channel

Widest Dimming Range for zone / regional dimming

Controls LED Supply to reduce any headroom

Synchronizes to TV video Signals

Allows user to program startup settings

Television Edge-lit Backlight

Solid State Lighting

External DC-DC Control and External Current Sinks

External DC-DC Supply and FETS

12-bit PWM Dimming

Efficiency Optimizer

External PWM Inputs
Strings can be used in parallel for higher current needs

No compensation required, adapts to LED supply requirements

Allows up to 12 LEDs per String

LED driver can operate from typical 5V, 12V and 24V supplies or battery management.

Notebook Backlight

Industrial Displays

 Integrated Boost Controller and Internal Current Sinks

Up to 8 Strings (30mA per String)

Integrated Boost Controller

Up to 50V per String

Wide Vin Supply
Strings can be used in parallel for higher current needs

No compensation required, adapts to LED supply requirements

Allows up to 12 LEDs per String

LED driver can operate from typical 5V, 12V and 24V supplies or battery management.

Notebook Backlight

Industrial Displays

 Integrated Boost Controller and Internal Current Sinks

Up to 8 Strings (30mA per String)

Integrated Boost Controller

Up to 50V per String

Wide Vin Supply
Allows for higher power operation up to 2A per channel

Supports up to 250V string voltage

Widest Dimming Range for zone / regional dimming

Controls LED Supply to reduce any headroom

Synchronizes to TV video Signals

Allows user to program startup settings

Television Direct Backlight

Monitor Backlight

 External DC-DC Control and Internal Current Sinks

External DC-DC Supply

12-bit PWM Dimming

Efficiency Optimizer

Video Sync

EEPROM

Multi-string Solution

Atmel offers compact, high-power LED drivers for multi-LED string applications such as direct backlight/edge-lit LCD panels and high-brightness solid-state lighting applications.

Atmel LED driver solutions comprise of three product families:

The Integrated Boost Controller and Internal Current Sinks LED driver family provides an internal boost controller and an internal current control MOSFET to sink up to 30mA per string. These devices can drive up to six strings with up to 12 white LEDs per string, for a total of 72 LEDs per device—scalable up to four devices. These solutions address the notebook, industrial and medical LCD panel markets, where design simplicity, small BOM and internal digital compensation are critical.

The external DC-DC Control and Internal Current Sinks LED driver family delivers power, controllability and programmability—all in one compact solution. These devices adaptively control the external DC-DC/AC-DC converters that power the LED strings using Atmel Efficiency Optimizer technology, which minimizes power use while maintaining LED current accuracy. These high-power LED string drivers use internal current control MOSFETs to sink up to 100mA per string, and can drive 16 parallel strings of 10 white LEDs each, for a total of 160 white LEDs per device. Each string can be individually controlled to enable area (zone) dimming for highest dynamic range and significantly reduced power usage. These devices address the direct backlight LCD panels and monitor applications.

The LED Drivers Solutions with External DC-DC and NFETs drivers family also offers the Efficiency Optimizer technology, but uses external current control MOSFETs to sink up to 2A per string. The devices can drive 4-16 parallel strings of LEDs and offer fault detection and management of open circuit and short circuit LEDs. They also support LED string voltages up to 250V. These devices address the edge-lit and high-brightness solid state-lighting applications, which require higher power while enabling PWM and analog dimming.