MAX16813

PRODUCTION

Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller and Battery Disconnect

Multistring Driver Provides Highest Efficiency and Complete Fault Protection with the Lowest External Component Count

Data Sheet (Rev. 4) Product Selection Table

Part Models: 8
1ku List Price: Starting From $1.09

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Overview

4-Channel Linear LED Current Sinks with Internal MOSFETs Independently Drive Multiple LED Strings
- Full-Scale LED Current Adjustable from 20mA to 150mA
- Drives 1 to 4 LED Strings
- 10000:1 PWM Dimming at 200Hz
Flexible Current-Mode Architecture Supports a Wide Range of Applications While Minimizing Interference
- Boost or SEPIC Current-Mode DC-DC Controller
- 200kHz to 2MHz Programmable Switching Frequency
- External Switching-Frequency Synchronization
- Spread-Spectrum Mode
Protection Features Enhance Fault Detection and System Reliability
- Output-to-Ground Undervoltage Protection
- Open-Drain Fault-Indicator Output
- Open-LED and LED-Short Detection and Protection
- Overtemperature Protection
Adaptive Output-Voltage Optimization to Minimize Power Dissipation
- Less than 2µA Shutdown Current

The MAX16813 high-efficiency, high-brightness LED (HB LED) driver provides four integrated LED current-sink channels. An integrated current-mode switching controller drives a DC-DC converter that provides the necessary voltage to multiple strings of HB LEDs. The device accepts a wide 4.75V to 40V input voltage range and withstands direct automotive load-dump events. The wide input range allows powering HB LEDs for small- to medium-sized LCD displays in automotive and general lighting applications.

An internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. An integrated spread-spectrum mode helps reduce EMI. Current-mode control with programmable slope compensation provides fast response and simplifies loop compensation. An adaptive output-voltage control scheme minimizes power dissipation in the LED current-sink paths. The device has a separate p-channel drive (PGATE) pin that is used for output undervoltage protection. Whenever the output falls below the threshold, the external p-MOSFET is latched off, disconnecting the input source. Cycling the EN or the input supply is required to restart the converter. The external p-MOSFET is off when the EN pin is below 0.3V (typ). The shutdown current is 1µA (typ) at an input voltage of 12V.

The device consists of four identical linear current-sink channels, adjustable from 20mA to 150mA with an accuracy of ±3% using a single external resistor. Multiple channels can be connected in parallel to achieve higher current per LED string. The device also features a unique pulsed dimming control through a logic input (DIM), with minimum pulse width as low as 500ns. Protection features include output overvoltage, open-LED detection and protection, programmable shorted LED detection and protection, output undervoltage protection and detection, and overtemperature protection. The device operates over the -40°C to +125°C automotive temperature range. The MAX16813 is available in 20-pin (6.5mm x 4.4mm) TSSOP and 20-pin (4mm x 4mm) TQFN packages.

Applications

Architectural, Industrial, and Ambient Lighting
Automotive Displays LED Backlights
Automotive RCL, DRL, Front Position, and Fog Lights
LCD TV and Desktop Display LED Backlights

Part Models: 8
1ku List Price: Starting From $1.09

Documentation

Data Sheet 1

MAX16813: Integrated, 4-Channel, High-Brightness LED Driver with High-Voltage DC-DC Controller and Battery Disconnect Data Sheet (Rev.4) 05/05/2017

Design Note 1

“Come rain or come shine”¹ - Automotive Heads-Up Displays Must Work Everyday 03/18/2015

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX16813ATP+	20-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16813ATP+T	20-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16813ATP/V+	20-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16813ATP/V+T	20-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16813AUP+	20-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16813AUP+T	20-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16813AUP/V+	20-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16813AUP/V+T	20-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 12, 2020 - 1681F WAFER FAB
		pcn_1681f
MAX16813ATP+	PRODUCTION
MAX16813ATP+T	PRODUCTION
MAX16813ATP/V+	PRODUCTION
MAX16813ATP/V+T	PRODUCTION
MAX16813AUP+	PRODUCTION
MAX16813AUP/V+	PRODUCTION
MAX16813AUP/V+T	PRODUCTION
Jun 18, 2021 - 2161 ASSEMBLY
		pcn_2161
MAX16813ATP/V+	PRODUCTION
MAX16813ATP/V+T	PRODUCTION
May 11, 2022 - 2236N ASSEMBLY
		pcn_2236n
MAX16813AUP+	PRODUCTION	pcn_2236n
Jul 13, 2022 - 2236A ASSEMBLY
		pcn_2236a
MAX16813AUP/V+	PRODUCTION
MAX16813AUP/V+T	PRODUCTION
Jun 10, 2021 - 2160 ASSEMBLY
		pcn_2160
MAX16813AUP/V+	PRODUCTION
MAX16813AUP/V+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX16813/MAX16813B

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Features and Benefits

6.5V Up to HB LED Forward Voltage
Demonstrates OVP (33V)
HB LED String Output Currents Configurable for 100mA or 150mA
Demonstrates UVLO (4V)
Demonstrates Cycle-by-Cycle Current-Limit and Thermal-Shutdown Features
Demonstrates Adaptive-Voltage Optimization
Demonstrates Output Short Protection and Ultra-Low Current Shutdown
Proven PCB and Thermal Design
Fully Assembled and Tested

Product Details

The MAX16813 evaluation kit (EV kit) demonstrates the MAX16813 high-brightness LED (HB LED) driver, integrating a step-up DC-DC preregulator followed by 4 channels of linear current sinks. The step-up preregulator switches at 350kHz and operates as a current-mode-controlled regulator capable of providing up to 600mA for the linear circuits. Each of the 4 linear channels are capable of operating up to 40V and provide up to 150mA per channel. The 4 channels are configurable for 100mA or 150mA HB LED output current.

The EV kit operates from a 6.5V DC supply voltage up to the HB LED string-forward voltage. The EV kit can withstand a 40V load-dump condition for up to 400ms. The EV kit demonstrates the device features such as adaptive voltage optimization, undervoltage lockout (UVLO), overvoltage protection (OVP), cycle-by-cycle current limit, thermal shutdown, and digital PWM dimming operation using a digital PWM input signal to control the brightness of the HB LEDs. The EV kit includes an external pMOSFET (Q2) that can be used to disconnect the boost output from the battery in the event of an output overload or short condition.

The MAX16813 EV kit can also be used to evaluate the MAX16813B with simple IC replacement of U1

Applications