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MAX25610AAUE/V+T

AEC-Q100 synchronous buck/buck-boost LED driver, 5-36V in, 3A out, 400kHz, TSSOP-16EP, automotive lighting

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Manufacturer Part：

MAX25610AAUE/V+T

Package：

16-TSSOP-EP (4.4 x 5.0 mm)

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Description

Product Overview

The MAX25610AAUE/V+T is an Analog Devices (Maxim) AEC-Q100 qualified synchronous buck and buck-boost LED driver/DC-DC converter with integrated 60 mΩ MOSFETs. Operating from 5V to 36V input with up to 3A LED current, 400 kHz switching frequency, and both analog and PWM dimming, it is designed for automotive and industrial lighting applications.

Key Specifications

Input Voltage 5V to 36V
Output Current Up to 3A LED current
Topology Synchronous Buck / Buck-Boost / Boost
Switching Frequency 400 kHz (MAX25610A)
Integrated MOSFETs 2x 60 mΩ
Dimming Analog (REFI) + PWM (PWMDIM)
Current Sense Internal (±6%) or External (±3%)
Protection OVP, SCP, Thermal Shutdown, FLT flag
Qualification AEC-Q100
Operating Temperature -40°C to +125°C
Package 16-TSSOP-EP (4.4 mm width)

Features

  • AEC-Q100 automotive qualified for under-hood and exterior lighting applications
  • Multi-topology: configurable as buck, inverting buck-boost, or boost converter
  • Dual integrated 60 mΩ MOSFETs minimize external component count and BOM cost
  • Internal current sense option eliminates external sense resistor for cost savings
  • Analog and PWM dimming with wide dimming ratio for high-contrast lighting
  • Built-in spread-spectrum modulation reduces EMI noise

Applications

  • Automotive headlamp LED driver (low beam, high beam, DRL)
  • Automotive taillight and turn signal LED driver
  • Industrial high-bay LED lighting power supply
  • Automotive interior ambient lighting controller
  • General DC-DC converter with adjustable output voltage

The MAX25610AAUE/V+T is an Analog Devices (Maxim) AEC-Q100 qualified synchronous LED driver and DC-DC converter integrating dual 60 mΩ power MOSFETs for buck, inverting buck-boost, and boost topologies. Operating from 5V to 36V input, it drives up to 3A LED current at 400 kHz switching frequency. Features include internal or external current sensing (±6% or ±3% accuracy), analog and PWM dimming, built-in spread spectrum for EMI reduction, and comprehensive protection (OVP, SCP, thermal shutdown with FLT flag). The 16-TSSOP-EP package with exposed pad provides efficient thermal management for automotive and industrial lighting applications.

The MAX25610AAUE/V+T uses current-mode control for fast transient response and simplified loop compensation. In buck configuration, the high-side MOSFET connects the input to the inductor during on-time, storing energy in the inductor’s magnetic field; during off-time, the low-side synchronous MOSFET provides a freewheeling path. LED current is regulated by monitoring the voltage across an internal sense element (or external resistor) and adjusting the duty cycle accordingly. The REFI pin provides analog dimming by scaling the LED current reference, while the PWMDIM pin enables digital PWM dimming by enabling/disabling switching. The built-in spread spectrum dithers the switching frequency to reduce peak EMI emissions.

Pin Function
INP Input power supply (5-36V)
LX Switching node (connect to inductor)
INN Negative input reference for current sense
OUT Current sense output / LED cathode connection
VCC 5V internal regulator output (bypass cap)
AGND Analog ground
PGND Power ground
REFI Analog dimming reference voltage input
PWMDIM PWM dimming control input
COMP Loop compensation pin
FB Voltage feedback (DC-DC mode)
FLT Fault flag output (open-drain)
BST Bootstrap capacitor for high-side driver
  • Automotive LED headlamp driver in buck configuration for 1-2 series LEDs
  • Automotive taillight buck-boost driver for 3-5 series LEDs from 12V battery
  • Industrial high-bay LED fixture constant-current driver
  • Automotive interior RGB ambient lighting PWM-dimmed controller
  • General-purpose 5-36V to adjustable-voltage synchronous buck DC-DC converter
Model Manufacturer Key Difference
MAX25610BAUE/V+T ADI 2.2MHz switching frequency version
MAX20078ATUA/V+ ADI Single MOSFET, lower cost variant
TPS92692QPWPRQ1 Texas Instruments Alternative automotive LED driver
LT3965IMSE#PBF ADI 60V quad LED driver
LTC3692IFE#PBF ADI Dual LED driver buck converter
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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