Analog Devices / Maxim Integrated MAX16819 High-Brightness LED Drivers
Analog Devices MAX16819 2MHz high-brightness LED (HB LED) drivers provide high-side current sense and 5000:1 dimming. They are a cost-effective solution for automotive interior/exterior lighting, architectural and ambient lighting, LED bulbs such as MR16, and LED illumination applications. Analog Devices MAX16819 HB LED drivers operate from a 4.5V to 28V input voltage range and feature a 5V/10mA onboard 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 features high-side current sensing and integrated current-setting circuitry for the reduced external component count while delivering an LED current with ±5% accuracy.Features
- High-Side Current Sense
- Dedicated 5000:1 Dimming Input
- 20kHz Maximum Dimming Frequency
- Hysteretic Control: No Compensation
- Up to 2MHz Switching Frequency
- ±5% LED Current Accuracy
- Adjustable Constant LED Current
- 4.5V to 28V Input Voltage Range
- Over 25W Output Power
- 5V, 10mA On-Board Regulator
- -40°C to +125°C Operating Temperature Range
Applications
- Architectural, Industrial, and Ambient Lighting
- Automotive RCL, DRL, and Fog Lights
- Heads-Up Display
- Indicators and Emergency Lighting
Typical Operating Circuit
Yayınlandı: 2011-07-18
| Güncellenmiş: 2023-04-13
