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Switching Controllers 5V/3.3V or Adjustable, 100% Duty Cycle, High-Efficiency, Step-Down DC-DC Controllers

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MAX1626ESA+ General Description

The MAX1626/MAX1627 step-down DC-DC controllers operate over a 2.6V to 16.5V input voltage range. The controllers deliver load current from 1mA to more than 2A. The MAX1626 has pin-selectable 3.3V and 5V outputs. The MAX1627 supports adjustable outputs from 1.3V to 16V.

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Key Features

  • Reduce External Components and Total Cost
    • 300KHz PWM Switching Reduces Component Size
    • Tiny Surface-Mount Inductor
  • Reduce Power Dissipation
    • > 90% Efficiency from 3mA to 2A Loads
    • Low Dropout Voltage
    • 100% Maximum Duty Cycle
  • Reduce Number of DC-DC Controllers to Stock
    • Wide 2.6V to 16.5V Input Voltage Options
    • Selectable 3.3V and 5V or Adjustable 1.3V to 16VOutput Voltage Options
  • Reduce System Power Consumption
    • 90μA Max Quiescent Current
    • 1μA Max Shutdown Current
  • Operates Reliably in Adverse Environment
    • Soft-Start Limits Startup Current
    • Current-Limited Control Scheme
  • Increase Design Flexibility
    • External P-Channel MOSFET Allows Output Powerof > 12.5W


  • 5V to 3.3V Green PC Applications
  • Battery-Powered Applications
  • Handheld Computers
  • High-Efficiency Step-Down Regulation
  • Low-Cost Notebook Computer Supplies
  • Minimum Component DC-DC Converters
  • PCMCIA Power Supplies
  • PDAs and Other Handheld Devices
  • Portable Terminals


model MAX1626ESA+ package Small-Outline IC, Narrow (0.15in)
packingQty Tube,100 packingOption Tube
packageType S8+4 rohs roHSY
lifeCycle production tempRange -40 to 85C
Package Tube Product Status Active
Output Type Transistor Driver Function Step-Down
Output Configuration Positive Topology Buck
Number of Outputs 1 Output Phases 1
Voltage - Supply (Vcc/Vdd) 3V ~ 16.5V Frequency - Switching 300kHz
Duty Cycle (Max) 100% Synchronous Rectifier No
Clock Sync No Control Features Enable
Operating Temperature -40°C ~ 85°C (TA) Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) Supplier Device Package 8-SOIC
Base Product Number MAX1626
MAX1626, MAX1627: Typical Operating Circuit

Service Policies and Others

After-Sales & Settlement Related

payment Payment

We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

If you have specific preferences or requirements for payment channels, please contact our sales team. 

customers are required to pay all possible fees, including sales tax,customs fees, etc.

shipping Shipping And Packing
Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

warranty Warranty & Returns

Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.

Ratings and Reviews

v**n 09/06/2021

Everything works fine super to tambov more than a month went

V**e 05/21/2021

TWAR compatible with your order. All OK.

D**s 03/16/2020

It looks whole, cracks nowhere. Until they checked in the work. Later we will finish the review.



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Availability: 7247 PCS

Qty. Unit Price(USD) Ext. Price
1+ $2.567 $2.57
200+ $0.994 $198.80
500+ $0.958 $479.00
1000+ $0.942 $942.00

The prices below are for reference only.