MAX20052

PRODUCTION

2A Synchronous -Buck LED Drivers with Integrated MOSFETs

High Performance, Compact, and Efficient Buck LED Driver Simplifies Automotive and General Lighting Designs

Data Sheet (Rev. 24) Product Selection Table
Part Models
8
1ku List Price
Starting From $1.67
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Part Details

  • Automotive Ready: AEC-Q100 Qualified
  • Fully Synchronous 2A Step-Down Converter with Integrated 0.14Ω (typ) MOSFETs
  • Wide 4.5V to 65V Input Supply Range
  • Two Switching Frequency Options: 400kHz and 2.1MHz
  • Internal Loop Compensation (MAX20050/MAX20052) and External Loop Compensation (MAX20051/MAX20053/MAX20053D) Options
  • Switching Frequency Synchronized to PWM Dimming Signal
  • Active-Low Fault (FLT) Indicator
  • Output Short-Circuit Protection
  • High-Side Current Regulation Eliminates One Connection to LED String
  • Spread-Spectrum Mode Alleviates EMI Problems
  • Low 200mV Full-Scale High-Side Current-Sense Voltage
  • REFI Pin Adjusts LED Current Down to Zero
  • PWM Dimming Disconnects Both High- and Low- Side MOSFET Drivers
  • 5V, 10mA LDO Output Provides Bias to Other Circuits
  • Ultra-Low Shutdown Current (5µA typ)
  • Output Overload, Short-Circuit, and Overtemperature Protections
  • 12-Pin (3mm x 3mm) TDFN,14-Pin (5mm x 4.4mm) TSSOP, and 24-pin (4mm x 4mm) TQFN Package Options
MAX20052
2A Synchronous -Buck LED Drivers with Integrated MOSFETs
MAX20050, MAX20051, MAX20052, MAX20053: Block Diagram
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Documentation

Data Sheet 1

Technical Articles 1

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Tools & Simulations

IBIS Model 1

Evaluation Kits

eval board
schematic 1
MAX20051EVKIT

Evaluation Kit for the MAX20051/MAX20053

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Features and Benefits

  • 4.5V to 65V Input Voltage
  • Drives 1 to 16 LEDs
  • 0A to 2A LED Current
  • Demonstrates Undervoltage-Lockout and Output- Short Protection
  • Demonstrates Current-Limit and Thermal-Shutdown Feature
  • Demonstrates 5V, 10mA LDO Output Capability
  • Proven PCB Layout and Thermal Design
  • Fully Assembled and Tested

Product Details

The MAX20051 evaluation kit (EV kit) demonstrates the MAX20051 and MAX20053, 2A synchronous buck LED drivers with integrated MOSFETs.

The EV kit operates from a DC supply voltage from 4.5V to 65V and the switching frequency is fixed at 400kHz. Spread-spectrum mode (SSM) is enabled for EMI improvement. The EV kit demonstrates both analog and pulse-width modulation (PWM) dimming. The EV kit also demonstrates short LED, open LED, and overtemperature- fault protection.

The EV kit also comes with a MAX20053 IC, which can be installed to evaluate the 2.1MHz switching frequency device. Refer to the Evaluating the MAX20053 section for more information.

Applications

  • Clearance Lamps (CLLs)
  • Commercial, Industrial, and Architectural Lighting
  • Corner Lamps (CLs)
  • Daytime Running Lamps (DRLs)
  • Fog Lamps
  • Head Lamps
  • Rear Lamps

eval board
schematic 2
MAX20050EVKIT

Evaluation Kit for the MAX20050/MAX20052

Buy Now View Details

Features and Benefits

  • 4.5V to 65V Input Voltage
  • Drives 1 to 16 LEDs
  • 0A to 1.5A LED Current
  • Demonstrates Undervoltage-Lockout and Output Short Protection
  • Demonstrates Current-Limit and Thermal-Shutdown Feature
  • Demonstrates 5V, 10mA LDO Output Capability
  • Proven PCB Layout and Thermal Design
  • Fully Assembled and Tested

Product Details

The MAX20050 evaluation kit (EV kit) demonstrates the MAX20050 and MAX20052, 1.5A synchronous buck LED drivers with integrated MOSFETs.

The EV kit operates from a DC supply voltage from 4.5V to 65V and the switching frequency is fixed at 400kHz. Spread-spectrum mode (SSM) is enabled for EMI improvement. The EV kit demonstrates both analog and pulse-width modulation (PWM) dimming. The EV kit also demonstrates short LED, open LED, and overtemperature fault protection.

The EV kit comes with a MAX20052ACTV IC, which can be installed to evaluate the 2.1MHz switching frequency device. See the Evaluating the MAX20052 section for more information.

Applications

  • Clearance Lamps (CLLs)
  • Commercial, Industrial, and Architectural Lighting
  • Corner Lamps (CLs)
  • Daytime Running Lamps (DRLs)
  • Fog Lamps
  • Head Lamps
  • Rear Lamps
MAX20051EVKIT
Evaluation Kit for the MAX20051/MAX20053
MAX20051EVKIT: Board Photo
MAX20050EVKIT
Evaluation Kit for the MAX20050/MAX20052
MAX20050EVKIT: Board Photo

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