Maxim > Products > Automotive > MAX16819, MAX16820

MAX16819, MAX16820

2MHz High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming

High-Brightness Step-Down LED Driver Controllers with High-Side Current-Sensing and Rapid Current-Pulsing Capability

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX16819/MAX16820, step-down constant-current high-brightness LED (HB LED) drivers provide a cost-effective solution for automotive interior/exterior lighting, architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications.

The MAX16819/MAX16820 operate from a 4.5V to 28V input voltage range and feature a 5V/10mA on-board 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/MAX16820 are well suited for applications requiring a wide input voltage range. The high-side current-sensing and an integrated current-setting circuitry minimize the number of external components while delivering an LED current with ±5% accuracy. A hysteretic control algorithm ensures excellent input-supply rejection and fast response during load transients and PWM dimming. The MAX16819 features a 30% inductor current ripple and the MAX16820 features a 10% current ripple. These devices operate up to 2MHz switching frequency, thus allowing for small component size.

The MAX16819/MAX16820 operate over the -40°C to +125°C automotive temperature range and are available in 3mm x 3mm x 0.8mm, 6-pin TDFN packages.

Data Sheet

Download	Rev 1	(PDF, 220kB)
E-Mail

An evaluation kit is available: MAX16820EVKIT

Key Features

High-Side Current Sense
Dedicated Dimming Control 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/Uses

Architectural, Industrial, and Ambient Lighting
Automotive RCL, DRL, and Fog Lights
Heads-Up Display
Indicators and Emergency Lighting

Key Specifications:

High Brightness LED Drivers

Part Number

Topology

Device V_IN
(V)

LED Channels

I_LED per Channel
(A)

LED String Volt.
(V)

Internal Pwr. MOSFETs

Freq.
(kHz)

PWM Dimming Freq.
(kHz)

PWM Dimming Ratio

EV Kit

Budgetary Price

max

min

max

See Notes

MAX16819

Buck

4.5

2000

200

$0.87 @1k

MAX16820

Yes

$0.87 @1k

See All High Brightness LED Drivers (25)

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.

Diagram

Simplified Diagram

Application Notes

Reference Design 4381		MR-16 LED Driver with a 5V Auxiliary Output to Power a Pulsating LED Cooler
Reference Design 4382		Reference Design for a 5S2P AR111 Lamp LED Driver
Application Note 4479		Diagnose LEDs by Monitoring the Switch-Mode Duty Cycle
Application Note 4509		DC Voltage Controls PWM Dimming of High-Brightness LEDs (HB LEDs)
Tutorial 4670		LEDs for General Lighting: What They Offer and Their Design in Retrofit Lamps
Tutorial 4687		LEDs Allow New Remote-Controlled Lighting Applications

Product Guides

Automotive (PDF)

Reliability Reports

Reliability Report:	MAX16819.pdf MAX16820.pdf
Show FIT data for:

Software/Models

MAX16820 LED Driver Macromodel

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX16819ATT+T			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16820ATT+			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16820ATT+T			Active	TDFN-EP;6 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0058 (PDF) Use pkgcode/variation: T633+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis

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

MAX16820EVKIT

MAX16820 Evaluation Kit

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