MAX16823
High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection
Highly Integrated, High-Voltage LED Driver Ideal for Automotive Applications
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Overview
Features and Benefits
- 5.5V to 40V Operating Range
- Adjustable Constant Output Current (5mA to 100mA and Up to 2A with External BJT)
- ±5% Output Current Accuracy
- Open LED Detection
- Three Independent High-Voltage DIM Inputs
- Three Integrated Pass Elements with Low Dropout Voltage (0.7V max)
- Undervoltage Lockout
- Output Short-Circuit Protection
- 3.4V Voltage Regulator with 4mA Capability
- Accurate, Low 203mV Current Sense
- Overtemperature Shutdown
- -40°C to +125°C Operating Temperature Range
Product Details
The MAX16823 three-channel LED driver operates from a 5.5V to 40V input voltage range and delivers up to 100mA per channel to one or more strings of high-brightness LEDs (HB LEDs). Each channel's current is programmable using an external current-sense resistor in series with the LEDs. Three DIM inputs allow a wide range of independent pulsed dimming in addition to providing the on and off control of the outputs. Wave-shaping circuitry reduces EMI while providing fast turn-on and turn-off times.
The MAX16823 is well suited for automotive applications requiring a high-voltage input and is able to withstand load-dump events up to 45V. On-board pass elements minimize external components while providing ±5% LED current accuracy. Additional features include an active-high, open-drain LEDGOOD output for open LED detection, a +3.4V (±5%) regulated output with 4mA output current capability, short-circuit and thermal protections.
The MAX16823 is available in thermally enhanced 5mm x 5mm, 16-pin TQFN-EP and 16-pin TSSOP-EP packages and is specified over the -40°C to +125°C automotive temperature range.
Applications
- Architecture and Industrial Lighting
- Automotive Exterior: Rear Combination Lights (RCLs), CHMSL
- Automotive Interior: RGB Ambient Lighting, Cluster Lighting, and LCD Backlighting
- Emergency Vehicle Warning Lights
- Navigation and Marine Indicators
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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