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MAX16836
High-Voltage, 350mA, High-Brightness LED Driver with PWM Dimming and 5V Regulator
350mA LED Driver Provides 3.5% Current Accuracy for Long LED Strings and PWM Dimming
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Status
Active: In Production.
Description
The MAX16836 current regulator operates from a 6.5V to 40V input-voltage range and delivers up to a total of 350mA to one or more strings of high-brightness LEDs (HB LEDs). The output current of the MAX16836 is adjusted by using an external current-sense resistor in series with the LEDs. A dimming input allows wide-range "pulsed" PWM operation. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16836 is well suited for applications requiring a high-voltage input and is able to withstand automotive load-dump events up to 40V. An on-board pass element minimizes external components while providing ±3.5% output-current accuracy. Additional features include a 5V regulated output and short-circuit and thermal protection.
The MAX16836 is available in a thermally enhanced, 5mm x 5mm, 16-pin TQFN package and in an 8-pin SO package with exposed pad. The MAX16836 is specified over the automotive -40°C to +125°C temperature range.
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Data Sheet
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An evaluation kit is available: MAX16836EVKIT
Key Features
- +6.5V to +40V Operating Range
- Adjustable LED Current (35mA to 350mA)
- ±3.5% LED Current Accuracy
- High-Voltage DIM Pin for Dimming Interface
- Integrated Pass Element with Low-Dropout Voltage (0.55V typ)
- +5V Regulated Output with 4mA Source Capability
- Parallel Operation for LED Current > 350mA
- Differential LED Current Sense
- Low Shutdown Supply Current (35µA typ)
- Low 200mV Current-Sense Reference Reduces Power Losses
- Wave-Shaped Edges Reduce Radiated EMI During PWM Dimming
- Thermal Shutdown
- Output Short-Circuit Protection
- Available in Small, Thermally Enhanced, 5mm x 5mm, 16-Pin TQFN Package and in 8-Pin SO with Exposed Pad Package
- -40°C to +125°C Operating Temperature Range
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Applications/Uses
- Automotive Interior: Map, Courtesy, and Cluster Lighting
- Automotive Exterior: Tail Lights and CHMSL
- Emergency Vehicle Warning Lights
- Navigation and Marine Indicators
- General Lighting
- Signage, Gasoline Canopies, Beacons
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Key Specifications:
| High Brightness LED Drivers |
| Part Number |
Topology |
Device VIN
(V) |
Device VIN
(V) |
LED Channels |
ILED per Channel
(A) |
LED String Volt.
(V) |
Internal Pwr. MOSFETs |
PWM Dimming Freq.
(kHz) |
PWM Dimming Ratio |
EV Kit |
Budgetary Price |
| max |
min |
max |
max |
max |
max |
See Notes |
| MAX16836 |
Linear |
40 |
6.5 |
|
0.35 |
38.6 |
Yes |
1 |
200 |
No |
$1.17 @1k |
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See All High Brightness LED Drivers (25)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
More Information
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Information Index
Document Ref.: 19-4029
Rev 2;
2009-06-24
This page last modified: 2009-06-24
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