Maxim > Products > Power and Battery Management > MAX727, MAX728, MAX729

MAX727, MAX728, MAX729

5V/3.3V/3V 2A Step-Down, PWM, Switch-Mode DC-DC Regulators

 Overview   Design Resources   Ordering Info   All   

Status Explanations for product status codes

Part Number Status Explanation
MAX727 This product is No Longer Available.This product was manufactured for Maxim by an outside wafer foundry using a process that is no longer available. It is not recommended for new designs. For further information, contact us. The data sheet remains available for existing users.

To the best of our knowledge, a second-source replacement for this part is available from Linear Technology. 

MAX728 This product is No Longer Available.This product was manufactured for Maxim by an outside wafer foundry using a process that is no longer available. It is not recommended for new designs. For further information, contact us. The data sheet remains available for existing users.

To the best of our knowledge, a second-source replacement for this part is available from Linear Technology. 

MAX729 This product is No Longer Available.This product was manufactured for Maxim by an outside wafer foundry using a process that is no longer available. It is not recommended for new designs. For further information, contact us. The data sheet remains available for existing users.

To the best of our knowledge, a second-source replacement for this part is available from Linear Technology. 

Description

The MAX727/MAX728/MAX729 are monolithic, bipolar, pulse-width modulation (PWM), switch-mode, step-down DC-DC regulators. Each is rated at 2A. Very few external components are needed for standard operation because the power switch, oscillator, feedback, and control circuitry are all on-chip. Employing a classic buck topology, these regulators perform high-current step-down functions.

These regulators have excellent dynamic and transient response characteristics, while featuring cycle-by-cycle current limiting to protect against overcurrent faults and short-circuit output faults. They also have a wide 8V to 40V input range.

Each regulator is available in a 5-pin TO-220 package. These devices have a preset 100kHz oscillator frequency and a preset current limit of 2.6A. See the MAX724/ MAX726 data sheet for more applications information.

Data Sheet

Download this datasheet in PDF formatDownload Rev 2 (PDF, 56kB)
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

  • Input Range: Up to 40V
  • 2A On-Chip Power Switch
  • Fixed Outputs:
    • 5V (MAX727)
    • 3.3V (MAX728)
    • 3V (MAX729)
  • 100kHz Switching Frequency
  • Excellent Dynamic Characteristics
  • Few External Components
  • 8.5mA Quiescent Current
  • TO-220 Package
 

Applications/Uses

  • Distributed Power from High-Voltage Buses
  • High-Current, High-Voltage Step-Down Applications
  • Multiple-Output Buck Converter
   

Notes and Comments

2A Step-Down, PWM, Switch-Mode DC-DC Converter
5V (MAX727)
3.3V (MAX728)
3V (MAX729)

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.: 19-0149 Rev 2; 1995-09-01
This page last modified: 2007-07-17