MAX15109

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

Smallest (2mm x 2.5mm), 8A, DC-DC Solution with Integrated MOSFETs in the Market
 Overview   Design Resources   Ordering Info   Related Products   All   

Status Explanations for product status codes

Part Number Status
MAX15109 Active: In Production. See Ordering Information for details.

Description

The MAX15109 high-efficiency, current-mode, synchronous step-down switching regulator with integrated power switches deliver up to 8A of output current. This regulator operates from 2.7V to 5.5V and provides four output voltages using two VID control inputs.

This 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.

This regulator offers skip-mode functionality to reduce current consumption and achieve a higher efficiency at light loads. 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 high switching frequency (1MHz), along with the PWM current-mode architecture allows for a compact, all ceramic capacitor design.

The IC features a capacitor-programmable slew-rate control to reduce input current at the startup and when the output changes state under VID control. 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 x 2mm, WLP package and is fully specified over the -40°C to +85°C temperature range.

Data Sheet

Download this datasheet in PDF formatDownload Rev 1 (PDF, 2.2MB)
Send this datasheet to any email addressEmail

My Maxim: Not Logged In
By logging in to My Maxim you can subscribe to alerts for this data sheet.

Login | Register

Key Features

  • Continuous 8A Output Current Over Temperature
  • Efficiency Over 90%
  • ±1% Accuracy Over Load, Line, and Temperature
  • Operate from a 2.7V to 5.5V Supply
  • VID Control Inputs for Selecting Output Voltage
  • Programmable Slew-Rate Control
  • Safe Startup into Prebiased Output
  • 1MHz Switching Frequency
  • Stable with Low-ESR Ceramic Output Capacitors
  • Enable Input and Power-Good Output for Power-Supply Sequencing
  • Cycle-by-Cycle Overcurrent Protection Faults
  • Fully Protected Against Overcurrent and Overtemperature
  • Input Undervoltage Lockout
  • 20-Bump (4 x 5 Array), 2.5mm x 2mm, WLP Package
 

Applications/Uses

  • DDR Memory
  • Distributed Power Systems
  • Notebook Power
   

Key Specifications:

Step-Down Switching Regulators
Part Number VIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. Method IOUT1 (max)
(A)
Switch Type Synchronous Switching Power Good Signal DC-DC Outputs Oper. Freq.
(kHz)
Budgetary
Price
min max min max See Notes
MAX15109  2.7 5.5 0.675 0.9
0.675
0.725
0.8
0.9
Digital/VID
Preset
8 Internal Yes Yes 1 1000 $4.30 @1k
See All Step-Down Switching Regulators (310)

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.



Diagram

MAX15109: Typical Operating Circuit
Typical Operating Circuit

Didn't Find What You Need?

Information Index

Overview

 

Design Resources

 

Ordering Info

 

Related Products

 
Description
Key Features
Applications/Uses
Key Specifications
Diagram
Notes and Comments
  Data Sheet
Technical Documents
Evaluation Kits
Reliability Reports
Software/Models
  Price and Availability
Samples
Buy Online
Package Information
Lead-Free Information
  Similar Products by Function
Similar Products by Application
Evaluation Kits
Products with Similar Part Numbers
Products Used With This
 
Document Ref.: 19-5918 Rev 1; 2011-10-20
This page last modified: 2012-01-03