ENGLISH 简体中文 日本語 한국어  

MAX1776
24V, 600mA Internal Switch, 100% Duty Cycle, Step-Down Converter


  QuickView     Technical Documents     Ordering Info     More Information     User Comments (0)     All  
Data Sheet
FULL DATA SHEET (PDF, 752kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail


Description
The MAX1776 high-efficiency step-down converter provides an adjustable output voltage from 1.25V to VIN from supply voltages as high as 24V. An internal current-limited 0.4Ω MOSFET delivers load currents up to 600mA. Operation to 100% duty cycle minimizes dropout voltage (240mV at 600mA).

The MAX1776 has a low 15µA quiescent current to improve light-load efficiency and conserve battery life. The device draws only 3µA while in shutdown.

High switching frequencies (up to 200kHz) allow the use of tiny surface-mount inductors and output capacitors. The MAX1776 is available in an 8-pin µMAX package, which uses half the space of an 8-pin SO. For increased output drive capability, use the MAX1626/ MAX1627 step-down controllers, which drive an external P-channel MOSFET to deliver up to 20W.

Key Features   Applications/Uses
  • Fixed 5V or Adjustable Output
  • 4.5V to 24V Input Voltage Range
  • Up to 600mA Output Current
  • Internal 0.4Ω P-Channel MOSFET
  • Efficiency Over 95%
  • 15µA Quiescent Supply Current
  • 3µA Shutdown Current
  • 100% Maximum Duty Cycle for Low Dropout
  • Current-Limited Architecture
  • Thermal Shutdown
  • Small 8-µMAX Package

 
  • Distributed Power Systems
  • Handheld Devices
  • Keep-Alive Supplies
  • Notebook Computers

    Key Specifications:   Step-Down Switching Regulators
    Part Number VIN (min) (V) VIN (max) (V) Min. VOUT (V) Max. VOUT (V) IOUT (A) IOUT (A) Output Adj. Method Operating Current, ICC (max) (mA) Number of DC-DC Outputs Operating Freq. (kHz) Package Price**
    MAX1776  4.5 24 1.25 24 0.6 0.6 Preset
    Resistor
    0.03 1 200 uMAX/8 $2.98 @ 1k
    See All Step-Down Switching Regulators (222)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Application Notes
  • Application Note 225: Using Digital Potentiometers in Adjustable Step-Down DC-DC Converter Designs - MAX1776

    Evaluation Kits
  • MAX1776EVKIT

    Reliability Reports
  • Show FIT data for:
  • Reliability Report: MAX1776EUA.pdf

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-4 of 4

    MAX1776 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1776EUA  
    uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1776EUA-T  
    uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1776EUA+  
    uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1776EUA+T  
    uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  • New Product Press Release 2001-05-22 

    Related Products
    MAX1836, MAX1837 24V Internal Switch, 100% Duty Cycle, Step-Down Converters

    Didn't Find What You Need?
  • Next Day Product Selection Assistance from Applications Engineers
  • Parametric Search
  • Applications Help
  •  QuickView   Technical Documents   Ordering Info   More Information  
     Description 
     Key Features 
     Applications/Uses 
     Key Specifications 
     Diagram 

     Data Sheet 
     Application Notes 
     Design Guides 
     Engineering Journals 
     Reliability Reports 
     Software/Models 
     Evaluation Kits 

     Price and Availability 
     Samples 
     Buy Online 
     Package Information 
     Lead-Free Information 

     Related Products 
     Notes and Comments 
     Evaluation Kits 

    Document Ref.: 19-1975; Rev 2; 2003-07-22
    This page last modified: 2007-06-29



          Privacy Policy    Legal Notices

          Copyright © 2008 by Maxim Integrated Products, Dallas Semiconductor