MAX25505

RECOMMENDED FOR NEW DESIGNS

4 x 24 Automotive LED Matrix Drivers with ASIL Features

Data Sheet (Rev. 1) Product Selection Table

Part Models: 4
1ku List Price: Starting From $3.50

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Overview

Flexible Configuration
- Programmable Multiplex Ratio Between 4:1 and 1:1
- Integrated Column Drivers
- Programmable Dither for Enhanced Resolution
- Optional Individual Programmable Delays
- Optional Pseudorandom Spread Spectrum on Each Output
24 Row Drivers
- Up to 65mA Peak Output Current
- Very Narrow Minimum Current Pulse for Maximum Dimming Ratio
- Optional Ghosting Elimination
Extensive Diagnostics Supporting ASIL B
- Shorted or Open LEDs
- Programmable V_LED Overvoltage Detection with Flag
- Adjacent SNK_ to SNK_ Short Detection

Shorted SNK_ or SRC_ to GND
ISET Out of Range
Internal Clock Out-of-Range Detection
Bandgap Reference Out-of-Range
CRC on Internal Memory Contents
Undervoltage/Overvoltage Detection on AllSupplies
Thermal Warning/Shutdown

FB Output to Control External DC-DC Converter
SPI Interface Optionally with CRC (MAX25505)
V_SYNC Synchronization Input (ProgrammableActive-High/Low)
48-Lead TQFN and TSSOP Packages
AEC-Q100 Grade 1Ordering

The MAX25504/MAX25505 are 4 x 24-channel modular matrix drivers. The integrated current outputs can sink up to 65mA LED current each. The source drive pins provide current to the columns of the matrix on a multiplexed basis. Device power comes from an external 3.3V or 5V supply, while the LED current-sink outputs can operate at up to 14V.

A feedback output pin (FB) is provided to control an external DC-DC converter so that voltage headroom can be optimized and the overall system power dissipation reduced.

The devices are highly flexible due to their programmability using the SPI interface. Among the programmable parameters are the LED current, individual PWM settings, and multiplex ratio.

The devices feature a high-speed interface for controlling up to 16 devices in a daisy-chain configuration. In addition, they include multiple diagnostic features to aid in the building of ASIL B systems.

The MAX25504/MAX25505 are available in TQFN and TSSOP packages and operate in the -40°C to +125°C temperature range.

APPLICATIONS

Central Information Displays
Instrument Clusters
Interior Lighting
Exterior Rear Lighting

Part Models: 4
1ku List Price: Starting From $3.50

Documentation

Data Sheet 1

MAX25504/MAX25505: 4 x 24 Automotive LED Matrix Drivers with ASIL Features Data Sheet (Rev.1) 07/15/2024

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
MAX25505ATMA/V+	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX25505ATMA/V+T	48-LFCSP-7X7X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX25505AUMA/V+	48-TSSOP_6.1_EP-6.1_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX25505AUMA/V+T	48-TSSOP_6.1_EP-6.1_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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

Software Resources

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Tools & Simulations

IBIS Model 1

MAX25505 IBIS Model

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