MAX77541
Info : RECOMMENDED FOR NEW DESIGNS
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MAX77541

5.5VIN/6A, Dual-Phase High-Efficiency Buck Converter

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High Power Density and Efficiency Flexible Buck Converter for 1S Battery

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $1.94
Features
  • 2.2V to 5.5V Input Voltage Range
  • 0.3V to 5.2V Output Voltage Range
  • Two 3A Bucks (1Φ) or One 6A Buck (2Φ)
  • ±0.5% VOUT Accuracy (Default VOUT at 25°C)
  • 91% Peak Efficiency (3.8VIN, 1.1VOUT, 1.6MHz)
  • Auto SKIP/PWM Transition and Low-Power Mode
  • Drop-Out Operation with 98% of Max. Duty Cycle
  • Programmable Soft-Start/Soft-Stop and Ramp-up/Ramp-down Slew-rates
  • Prebiased Startup and Active Output Discharge
  • Programmable Inductor Peak Current Limits for Solution Size Optimization
  • 0.5/1.0/1.6MHz Nominal Switching Frequency
  • Spread-Spectrum Modulation for EMI Reduction
  • Internal/External Frequency Tracking
  • Default VOUT and Phase Configuration Setting by RSEL1 and RSEL2
  • I2C Slave ADDR, ILIM, and FSW Preset by RCFG
  • Dedicated ENx, POKx and FPWMx for each Buck
  • UVLO, Thermal Shutdown, and Short-circuit Protection
  • High-Speed I2C Serial I/F
  • Available in 30-WLP (2.51mm x 2.31mm x 0.7mm) and 24-FC2QFN (3mm x 3mm) Packages
  • Less than 55mm2 Total Solution Size with 2520 Inductors
Additional Details
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The MAX77541 is a high-efficiency step-down converter with two 3A switching phases for single-cell Li+ battery and 5VDC systems. It uses an adaptive COT (constant on-time) current-mode control architecture and the two 3A switching phases can be configured as either one (2Φ, 6A) or two (1Φ, 3A each) outputs. The output voltages are preset with resistors and are further adjustable through an I2C compatible interface. With 91% peak efficiency, low quiescent current, and compact solution size, the MAX77541 is ideal for battery powered, space-constraint equipment.

Programmable switching frequency, frequency tracking, and spread-spectrum allow easier system optimization for noise-sensitive applications. Dedicated EN, POK, and FPWM pins provide options for direct hardware control, while more programmable options such as soft-start/stop and ramp-up/down slew-rates are available through I2C. An array of built-in protections ensures safe operation under abnormal operating conditions.

Applications

  • Single-Cell Li+ and 5VDC Systems
  • Gaming Consoles and VR/AR Headsets
  • Microprocessors, FPGAs, DSPs, and ASICs
  • Network Switches and Routers
Part Models 4
1ku List Price Starting From $1.94

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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MAX77541AAFG+T
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MAX77541AAWV+
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Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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MAX77541EVKIT

Evaluation Kit for the MAX77541 in Wafer-Level Package

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MAX77541EVKIT

Evaluation Kit for the MAX77541 in Wafer-Level Package

Evaluation Kit for the MAX77541 in Wafer-Level Package

Features and Benefits

  • Probe sockets for high-accuracy measurements
  • Test points for all features (POK, FPWM, EN, and IRQB)
  • Default output voltage adjustable through SEL
  • I2C slave ADDR, ILIM, fSW preset by CFG
  • Connector for custom I2C host

Product Detail

The MAX77541 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77541 dual-phase configurable step-down regulator. The board is equipped with test points and jumpers for testing all pins on the device. Three potentiometers allow the user to adjust the SEL1/SEL2/CFG configuration pins at will. There are also probe sockets on critical nodes (VOUTx, LXx) for precise measurements. The board also comes with some spare inductors (L3-L6) for testing out efficiency/performance tradeoffs. The PCB is designed with Maxim Integrated’s recommended layout of the IC and external components. The IC sets default output voltages by way of R13 and R14, but can be changed with the potentiometers or through I2C communication. Maxim Integrated’s graphical user interface (GUI) can be used by connecting J11 to a Windows®-based PC through a MAXUSB_INTERFACE# device.

Applications

  • Gaming Consoles and VR/AR Headsets
  • Microprocessors, FPGAs, DSPs, and ASICs
  • Network Switches and Routers
  • Single-Cell Li+ and 5VDC Systems
Tools & Simulations

Tools & Simulations 2

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