MAX20097
Dual-Channel Synchronous Buck, High-Brightness LED Controller with and without SPI Interface
Dual-Channel Ultra-Fast Response Time Buck Controller with no Overshoots or Undershoots
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Overview
Features and Benefits
- Integration Minimizes BOM for High-Brightness LED Driver, Saving Space and Cost
- Wide 4.5V to 65V Input Voltage Range
- No Compensation Components
- Programmable Switching Frequency
- External MOSFETs that are Sizable for the Appropriate Current
- Wide Dimming Ratio Allows High-Contrast Ratio
- Analog Dimming
- PWM Dimming
- Suitable for Matrix Lighting
- Maintains Current Regulation While Shorting/Opening Individual LEDs in the String
- Ultra-Fast Response Control Loop Prevents Overshoots and Undershoots
- Protection Features and Wide Temperature Range Increase System Reliability
- Short Circuit, Overvoltage, and Thermal Protection
- -40°C to +125°C Operating Temperature Range
- Thermal Monitor and LED Current Monitor
- Fault Diagnosis Through SPI Interface and Through FLTB Pin for Applications without SPI Interface
Product Details
The MAX20096/MAX20097 are dual-channel, high-voltage, synchronous n-channel high-current buck LED drivers. The ICs use a proprietary average current-mode-control scheme to regulate the inductor current. This control method does not require any control-loop compensation, maintaining nearly constant switching frequency. Inductor current sense is achieved by sensing the current in the bottom switching device. The ICs integrate two fully synchronous buck-converter controllers, and operate over a wide 4.5V to 65V input range. The ICs are designed for high-frequency operation and can operate at switching frequencies as high as 1MHz.
In the MAX20096, the output voltages and currents on both channels and the junction temperature can be read back through the SPI interface. Protection features include inductor current-limit protection, overvoltage protection, and thermal shutdown. The MAX20096 is available in a space-saving thermally enhanced (5mm × 5mm), 32-pin side-wettable TQFN package and is specified to operate over the -40°C to +125°C automotive temperature range.
The MAX20097 is available in a 28-pin thermally enhanced TSSOP package, but does not have the SPI interface. It includes an open-drain fault flag (FLTB) that goes low in case of an open string, shorted string, or overvoltage activation in any one of the channels, or also in thermal shutdown.
Applications
- Automotive Exterior Lighting
- Commercial, Industrial, and Architectural Lighting
- Daytime Running Lights (DRLs)
- Fog Light and Adaptive Front Light Assemblies
- High-Beam/Low-Beam/Signal/Position Lights
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
Documentation & Resources
Product Recommendations
MAX20097 Companion Parts
Recommended Related Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX20097ATJ/VY+ | Material Declaration | Reliability Data | 32-LFCSP_SS-5X5X0.75 | |
| MAX20097ATJ/VY+T | Material Declaration | Reliability Data | 32-LFCSP_SS-5X5X0.75 | |
| MAX20097AUI/V+ | Material Declaration | Reliability Data | 28-TSSOP_4.4_EP-4.4_MM | |
| MAX20097AUI/V+T | Material Declaration | Reliability Data | 28-TSSOP_4.4_EP-4.4_MM | |
| Wafer Fabrication Data |
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MAX20097 Discussions
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.