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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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Key Features
Applications/Uses
Parametric specs for LED Drivers
| VIN (V) (min) | 5.5 |
| VIN (V) (max) | 40 |
| Max. No. of LEDs | 10 |
| # LED Channels | 3 |
| Regulation Topology | Linear |
| LED Configuration | Series-Parallel |
| ILED per Channel (A) (max) | 0.1 |
| PWM Dimming Freq. (kHz) (max) | 3 |
| Dimming Ratio (max) | 200 |
| Dimming Control | PWM |
| VDROPOUT (mV) (typ) | 700 |
| VCURR_SENSE (mV) | 203 |
| POUT (W) | 12 |
| ICC (mA) (max) | 3 |
| LED String Volt. (V) (max) | 39.1 |
| Package/Pins | TQFN/16 TSSOP/16 |
| Budgetary Price (See Notes) | 1.82 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection | Sep 01, 2015 | |
| Reference Schematic | Reference Design for a 3S3P Rear Combination Lamp (RCL) LED Driver |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for LED Drivers
| VIN (V) (min) | 5.5 |
| VIN (V) (max) | 40 |
| Max. No. of LEDs | 10 |
| # LED Channels | 3 |
| Regulation Topology | Linear |
| LED Configuration | Series-Parallel |
| ILED per Channel (A) (max) | 0.1 |
| PWM Dimming Freq. (kHz) (max) | 3 |
| Dimming Ratio (max) | 200 |
| Dimming Control | PWM |
| VDROPOUT (mV) (typ) | 700 |
| VCURR_SENSE (mV) | 203 |
| POUT (W) | 12 |
| ICC (mA) (max) | 3 |
| LED String Volt. (V) (max) | 39.1 |
| Package/Pins | TQFN/16 TSSOP/16 |
| Budgetary Price (See Notes) | 1.82 |
Key Features
- 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
Applications/Uses
- 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
Description
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.
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.
Technical Docs
| Data Sheet | High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection | Sep 01, 2015 | |
| Reference Schematic | Reference Design for a 3S3P Rear Combination Lamp (RCL) LED Driver |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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