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Maxim > Products > [Power and Battery Management]  [Automotive] 
MAX16801A, MAX16801B, MAX16802A, MAX16802B
Offline and DC-DC PWM Controllers for High-Brightness LED Drivers

LED Driver Solution with Wide Range of Operation and High-Current Accuracy


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 592kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX16801A/B/MAX16802A/B high-brightness (HB) LED driver-control ICs contain all the circuitry required for the design of wide-input-voltage-range LED drivers for general lighting and display applications. The MAX16801 is well suited for universal input (rectified 85VAC to 265VAC) LED drivers, while the MAX16802 is intended for low-input-voltage (10.8VDC to 24VDC) LED drivers.

When the LED current needs to be tightly regulated, an additional on-board error amplifier with 1% accurate reference can be utilized. A wide dimming range can be implemented by using low-frequency PWM dimming.

The MAX16801/MAX16802 feature an input undervoltage lockout (UVLO) for programming the input-supply start voltage, and to ensure proper operation during brownout conditions. The MAX16801 has an internal-bootstrap undervoltage lockout circuit with a large hysteresis that simplifies offline LED driver designs. The MAX16802 does not have this internal bootstrap circuit and can be biased directly from a +12V rail.

The 262kHz fixed switching frequency is internally trimmed, allowing for optimization of the magnetic and filter components, resulting in a compact, cost-effective LED driver. The MAX16801A/MAX16802A are offered with 50% maximum duty cycle.The MAX16801B/MAX16802B are offered with 75% maximum duty cycle. These devices are available in an 8-pin µMAX® package and operate over the -40°C to +85°C temperature range.

An evaluation kit is available:  MAX16802BEVKIT  

Key Features   Applications/Uses
  • Suitable for Buck, Boost, Flyback, SEPIC, and Other Topologies
  • Up to 50W or Higher Output Power
  • Universal Offline Input Voltage Range: Rectified 85VAC to 265VAC (MAX16801)
  • IN Pin Directly Driven From 10.8VDC to 24VDC Input (MAX16802)
  • Internal Error Amplifier with 1% Accurate Reference for Precise LED Current Regulation
  • PWM or Linear Dimming
  • Fixed Switching Frequency of 262kHz ±12%
  • Thermal Shutdown
  • Digital Soft-Start
  • Programmable Input Startup Voltage
  • Internal Bootstrap UVLO with Large Hysteresis (MAX16801)
  • 45µA (typ) Startup Supply Current, 1.4mA (typ) Operating Supply Current
  • 50% (MAX16801A/MAX16802A) or 75% (MAX16801B/MAX16802B) Maximum Duty Cycle
  • Available in a Tiny 8-Pin µMAX Package

 
  		• Commercial and Industrial Lighting
  		• Decorative and Architectural Lighting
  		• Offline and DC-DC LED Drivers
  		• RGB Back Light for LCD TVs and Monitors

    Key Specifications:  High Brightness LED Drivers
    Part Number Topology VIN
    (V)    		 VIN
    (V)    		 Extended VIN with External Bias LED Channels ILED per Channel
    (A)    		 LED String Volt. Internal Pwr. MOSFETs Freq. PWM Dimming Freq.
    (kHz)    		 PWM Dimming Ratio EV Kit Price
    min max max max max max See Notes
    MAX16801 
    Boost
    Flyback
    Inductor Based
    SEPIC
    		 22 400 Yes
    1
    1
    		 3 Set externally No 262kHz 2 1:3000 No $0.66 @1k
    MAX16802 
    Boost
    Buck
    Flyback
    Inductor Based
    SEPIC
    		 10.8 24 Yes $0.66 @1k
    See All High Brightness LED Drivers (26)

    Key Specifications:  White LED Drivers
    Part Number Topology LEDs Config. Dimming Control VCURR_SENSE
    (mV)    		 POUT
    (W)    		 ILED
    (mA)    		 VIN
    (V)    		 VIN
    (V)    		 ICC
    (mA)    		 VOUT
    (V)    		 Oper. Freq.
    (kHz)    		 Package/Pins Price
    max num. of max min max max max See Notes
    MAX16801 
    Boost
    Flyback
    Inductor Based
    SEPIC
    		 100 Series-Parallel
    Analog
    PWM
    		 300 50 1000 22 400 1.4 100 262
    µMAX/8
    		 $0.66 @1k
    MAX16802 
    Boost
    Buck
    Flyback
    Inductor Based
    SEPIC
    		 Series 10.8 24
    µMAX/8
    		 $0.66 @1k
    See All White LED Drivers (46)

    Diagram
    MAX16801A/B, MAX16802A/B: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 1883: LEDs Are Still Popular (and Improving) after All These Years - MAX16802
  		• Application Note 3639: Design of a Nonisolated, Flyback LED Driver Circuit - MAX16801A, MAX16801B, MAX16802A, MAX16802B
  		• Application Note 3640: MAX16800 Test Board - MAX16801, MAX16802
  		• Application Note 3668: High-Efficiency Current Drive for High-Brightness LEDs - MAX16801, MAX16802
  		• Application Note 4387: Offline LED Driver Reference Design - MAX16801

    Evaluation Kits
  		• MAX16802BEVKIT

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * 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.


    Devices: 1-8 of 8

    MAX16801A Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX16801AEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX16801AEUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX16801B Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX16801BEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX16801BEUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX16802A Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX16802AEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX16802AEUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX16802B Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX16802BEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX16802BEUA+T    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• Topmark Coding: MAX16801 MAX16802
  		• New Product Press Release 2005-11-14 
  		• Product Ad: Download

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    Document Ref.: 19-3880; Rev 1; 2006-01-24
    This page last modified: 2007-08-30


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