MAX15051

High-Efficiency, 4A, 1MHz, Step-Down Regulators with Integrated Switches in 2mm x 2mm Package

DC-DC Regulators for 3.3V/5V Optimized for Minimizing Space and Providing Great Efficiency


Please check latest availability status for a specific part variant.

Description

The MAX15050/MAX15051 high-efficiency switching regulators deliver up to 4A load current at output voltages from 0.6V to (0.9 x VIN). The devices operate from 2.9V to 5.5V, making them ideal for on-board point-of-load and postregulation applications. Total output-voltage accuracy is within ±1% over load, line, and temperature.

The MAX15050/MAX15051 feature 1MHz fixed-frequency PWM operation. The MAX15050 features pulse-skip mode to improve light-load efficiency. The MAX15050 soft-starts in a monotonic mode and then operates in the forced PWM mode or pulse-skip mode depending on the output load current condition. The MAX15051 soft-starts in the monotonic mode and operates in the forced PWM mode. The high operating frequency allows for small-size external components.

The low-resistance on-chip nMOS switches ensure high efficiency at heavy loads while minimizing critical parasitic inductances, making the layout a much simpler task with respect to discrete solutions. Following a simple layout and footprint ensures first-pass success in new designs.

The MAX15050/MAX15051 incorporate a high-bandwidth (> 26MHz) voltage-error amplifier. The voltage-mode control architecture and the voltage-error amplifier permit a type III compensation scheme to achieve maximum loop bandwidth, up to 200kHz. High loop bandwidth provides fast transient response, resulting in less required output capacitance and allowing for all-ceramic capacitor designs.

The MAX15050/MAX15051 feature an output overload hiccup protection and peak current limit on both high-side and low-side MOSFETs. These features provide for ultra-safe operation in the cases of short-circuit conditions, severe overloads, or in converters with bulk electrolytic capacitors.

The MAX15050/MAX15051 feature an adjustable output voltage. The output voltage is adjustable by using two external resistors at the feedback or by applying an external reference voltage to the REFIN/SS input. The MAX15050/MAX15051 offer programmable soft-start time using one capacitor to reduce input inrush current. A built-in thermal shutdown protection assures safe operation under all conditions. The MAX15050/MAX15051 are available in a 2mm x 2mm, 16-bump (4 x 4 array), 0.5mm pitch WLP package.
MAX15050, MAX15051: Typical Operating Circuit MAX15050, MAX15051: Typical Operating Circuit Enlarge+

Key Features

  • Internal 18mΩ RDS(ON) MOSFETs
  • Pulse-Skip Mode for High-Efficiency Light Load (MAX15050)
  • Continuous 4A Output Current
  • ±1% Output-Voltage Accuracy Over Load, Line, and Temperature
  • Operates from 2.9V to 5.5V Supply
  • Adjustable Output from 0.6V to (0.9 x VIN)
  • Adjustable Soft-Start Reduces Inrush Supply Current
  • Factory-Trimmed 1MHz Switching Frequency
  • Compatible with Ceramic, Polymer, and Electrolytic Output Capacitors
  • Safe Startup Into Prebias Output
  • Enable Input/Power-Good Output
  • Fully Protected Against Overcurrent and Overtemperature
  • Overload Hiccup Protection
  • Sink/Source Current for DDR Applications
  • 2mm x 2mm, 16-Bump (4 x 4 Array), 0.5mm Pitch WLP Package

Applications/Uses

  • ASIC/CPU/DSP Core and I/O Voltages
  • Base-Station Power Supplies
  • DDR Power Supplies
  • Point-of-Load
  • Portable Applications
  • RAID Control Power Supplies
  • Server Power Supplies
  • Telecom and Networking Power Supplies
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX15050 2.95.50.65
Dyn. REF In
Resistor
4InternalYesYes11000EE-Sim
WLP/16
$3.00 @1k
MAX15051 
WLP/16
$2.94 @1k
See All Step-Down Switching Regulators (404)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX15050EVKIT: Evaluation Kit for the MAX15050
MAX15051EVKIT: Evaluation Kit for the MAX15051

Technical Documents

User Guide 5861 EE-SIM Design and Simulation Environment User Guide
Tutorial 5133 Power-Supply Solutions for Altera FPGAs
Tutorial 5132 Power-Supply Solutions for Xilinx FPGAs

Quality and Environmental Data

Product Reliability Reports: MAX15051.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • EE-Sim: Design & Simulate MAX15051
  • MAX15051 SIMPLIS Schematic
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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