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High-Efficiency, 8A, Current-Mode Synchronous Step-Down Switching Regulator

Smallest (2mm x 2.5mm), 8A, DC-DC Solution with Integrated MOSFETs in the Market

Product Details

Key Features

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 2.7
VIN (V) (max) 5.5
VOUT1 (V) (min) 0.6
VOUT1 (V) (max) 5.25
IOUT1 (A) (max) 8
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Design Tools EE-Sim
Package/Pins WLP HC/20
Budgetary
Price (See Notes)
5.38
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Simplified Block Diagram

Technical Docs

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Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 2.7
VIN (V) (max) 5.5
VOUT1 (V) (min) 0.6
VOUT1 (V) (max) 5.25
IOUT1 (A) (max) 8
Switch Type Internal
Output Adjust. Method Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Design Tools generateDesignEESIMUrl('https://maxim.transim.com/pwm2/designreq/Index?partId=7834', '')
Package/Pins WLP HC/20
Budgetary
Price (See Notes)
5.38

Key Features

  • Continuous 8A Output Current
  • Efficiency Up to 96%
  • ±1% Accuracy Over Load, Line, and Temperature
  • Operates from a 2.7V to 5.5V Supply
  • Adjustable Output from 0.6V to 0.95 x VIN
  • Programmable Soft-Start
  • Safe Startup into Prebiased Output
  • External Reference Input
  • 1MHz Switching Frequency
  • Stable with Low-ESR Ceramic Output Capacitors
  • Forced PWM Mode
  • Enable Input and Power-Good Output for Power-Supply Sequencing
  • Cycle-by-Cycle Overcurrent Protection
  • Fully Protected Features Against Overcurrent and Overtemperature
  • Input Undervoltage Lockout
  • 20-Bump (4 x 5 Array), 2.5mm x 2mm, WLP Package

Applications/Uses

  • Base Stations
  • DDR Memory
  • Distributed Power Systems
  • Notebook Power
  • Portable Devices
  • Server Power

Description

The MAX15108A high-efficiency, current-mode, synchronous step-down switching regulator with integrated power switches delivers up to 8A of output current. The regulator operates from 2.7V to 5.5V and provides an output voltage from 0.6V up to 95% of the input voltage, making the device ideal for distributed power systems, portable devices, and preregulation applications.

The IC utilizes a current-mode control architecture with a high gain transconductance error amplifier. The current-mode control architecture facilitates easy compensation design and ensures cycle-by-cycle current limit with fast response to line and load transients.

The low RDS(ON) integrated switches ensure high efficiency at heavy loads while minimizing critical inductance, making the layout design a much simpler task with respect to discrete solutions. The IC’s simple layout and footprint assures first-pass success in new designs.

The regulator features a 1MHz, factory-trimmed fixed-frequency PWM mode operation. The high switching frequency, along with the PWM current-mode architecture allows for a compact, all ceramic capacitor design.

The IC features a capacitor-programmable soft-start to reduce input inrush current. Internal control circuitry ensures safe-startup into a prebiased output. Power sequencing is controlled with the enable input and power-good output.

The IC is available in a 20-bump (4 x 5 array), 2.5mm × 2mm, WLP package and is fully specified over the -40°C to +105°C temperature range.

Simplified Block Diagram

MAX15108A: Functional Diagram MAX15108A: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.