MAX16820
MAX16820
PRODUCTION2MHz High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming
High-Brightness Step-Down LED Driver Controllers with High-Side Current-Sensing and Rapid Current-Pulsing Capability
- Part Models
- 2
- 1ku List Price
- Starting From $1.51
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Overview
- Simple High-Power LED Lighting Design with Accurate LED Current Control
- Over 25W Output Power
- High-Side Current Sense
- Adjustable Constant LED Current
- ±5% LED Current Accuracy
- 4.5V to 28V Input Voltage Range
- Wide Dimming Range (5000:1)
- Dedicated Dimming-Control Input
- 20kHz Maximum Dimming Frequency
- Minimizes Number of Components to Save Space and Cost
- Hysteretic Control: No Compensation
- Up to 2MHz Switching Frequency
- 5V, 10mA On-Board Regulator
The MAX16819/MAX16820, step-down constant-current high-brightness LED (HB LED) drivers provide a cost-effective solution for architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications.
The MAX16819/MAX16820 operate from a 4.5V to 28V input voltage range and feature a 5V/10mA on-board regulator. A high-side current-sense resistor adjusts the output current and a dedicated PWM input (DIM) enables a wide range of pulsed dimming.
The MAX16819/MAX16820 are well suited for applications requiring a wide input voltage range. The high-side current-sensing and an integrated current-setting circuitry minimize the number of external components while delivering an LED current with ±5% accuracy. A hysteretic control algorithm ensures excellent input-supply rejection and fast response during load transients and PWM dimming. The MAX16819 features a 30% inductor current ripple and the MAX16820 features a 10% current ripple. These devices operate up to 2MHz switching frequency, thus allowing for small component size.
The MAX16819/MAX16820 operate over the -40°C to +125°C automotive temperature range and are available in 3mm x 3mm x 0.8mm, 6-pin TDFN packages.
Applications
- Architectural, Industrial, and Ambient Lighting
- Heads-Up Display
- Indicators and Emergency Lighting
Documentation
Data Sheet 1
Design Note 2
Technical Articles 5
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX16820ATT+ | Thin Dual Flatpack No Leads, Exposed Pad | ||
| MAX16820ATT+T | Thin Dual Flatpack No Leads, Exposed Pad |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
SPICE Model 1
Evaluation Kits
MAX16820 Evaluation Kit
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