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MAX16824, MAX16825
High-Voltage, Three-Channel Linear High-Brightness LED Drivers
Independently Dimmable, Three-Channel LED Drivers for Compact and Simple Driver Circuits
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Status
Active: In Production.
Description
The MAX16824/MAX16825 three-channel LED drivers operate over a 6.5V to 28V input voltage range. These devices provide three open-drain constant-current-sinking outputs that are rated to 36V and deliver up to 150mA of current to each string of high-brightness LEDs (HB LEDs). The current at each output is programmable by means of an external current-sense resistor. The MAX16824 features three PWM inputs that control the duty cycle of the output current, allowing a wide LED dimming range to be implemented. The PWM inputs also function as on/off control for each corresponding output. The MAX16825 offers a 4-wire serial interface, a 3-bit shift register, and a 3-bit transparent latch. The serial interface allows a microcontroller to configure the output channels using four inputs (DIN, CLK, LE, active-low OE) and a data output (DOUT). DOUT allows multiple drivers to be cascaded and operated together.
The MAX16824/MAX16825's on-board pass elements minimize the need for external components, while at the same time, providing ±5% LED current accuracy. Additional features include a +5V (±5%) regulated output with 4mA output current capability and thermal protection.
The MAX16824/MAX16825 are available in a thermally enhanced 16-pin TSSOP-EP package and specified over the -40°C to +125°C temperature range.
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Data Sheet
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An evaluation kit is available: MAX16825EVKIT MAX16824EVKIT
Key Features
- 6.5V to 28V Operating Range
- Outputs Connected to 36V Supply for Long LED Strings
- Three 36V-Rated Output Channels with Independently Adjustable LED Current
- 150mA Output Current Per Channel
- ±5% LED Current Accuracy
- PWM Dimming
- Three Independent Dimming Control Inputs (MAX16824)
- 4-Wire Serial Interface LED Current Chopping (MAX16825)
- +5V (±5%) Regulated Output with 4mA Source Capability
- Fast Transient Dimming Response
- 200mV Current-Sense Reference Reduces Power Loss
- Thermal Shutdown
- -40°C to +125°C Operating Temperature Range
- Thermally Enhanced, 16-Pin TSSOP Exposed Paddle Package
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Applications/Uses
- Architectural and Decorative Lighting
- Automotive Lighting
- Indoor and Outdoor LED Video Displays
- Industrial Lighting
- LCD Display Backlighting
- Mood Lighting
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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 |
| MAX16824 |
Linear |
28 |
6.5 |
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0.15 |
38.6 |
Yes |
3 |
200 |
Yes |
$1.43 @1k |
| MAX16825 |
$1.43 @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
Product Guides
Reliability Reports
| Reliability Report: |
MAX16824.pdf |
| Show FIT data for: |
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| Request Reliability Report for: |
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Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX16824AUE+
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Active |
TSSOP-EP;16 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0120 (PDF)
Use pkgcode/variation: U16E+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16824AUE+T
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Active |
TSSOP-EP;16 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0120 (PDF)
Use pkgcode/variation: U16E+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16824AUE/V+
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Active |
TSSOP-EP;16 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0120 (PDF)
Use pkgcode/variation: U16E+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16824AUE/V+T
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Active |
TSSOP-EP;16 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0120 (PDF)
Use pkgcode/variation: U16E+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16825AUE+
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Active |
TSSOP-EP;16 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0120 (PDF)
Use pkgcode/variation: U16E+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16825AUE+T
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Active |
TSSOP;
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Evaluation Kits
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More Information
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Information Index
Document Ref.: 19-1107
Rev 2;
2009-11-24
This page last modified: 2010-05-21
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