MAX1605

30V Internal Switch LCD Bias Supply

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Status Explanations for product status codes

Active: In Production.

Description

The MAX1605 boost converter contains a 0.5A internal switch in a tiny 6-pin SOT23 package. The IC operates from a +2.4V to +5.5V supply voltage, but can boost battery voltages as low as 0.8V up to 30V at the output.

The MAX1605 uses a unique control scheme providing the highest efficiency over a wide range of load conditions. An internal 0.5A MOSFET reduces external component count, and a high switching frequency (up to 500kHz) allows for tiny surface-mount components. The current limit can be set to 500mA, 250mA, or 125mA, allowing the user to reduce the output ripple and component size in low-current applications.

Additional features include a low quiescent supply current and a shutdown mode to save power. The MAX1605 is ideal for small LCD panels with low current requirements, but can also be used in other applications. A MAX1605EVKIT evaluation kit (EV kit) is available to help speed up design time.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 1 (PDF, 248kB)
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An evaluation kit is available: MAX1605EVKIT

Key Features

  • Adjustable Output Voltage up to 30V
  • 20mA at 20V from a Single Li+ Battery
  • 88% Efficiency
  • Up to 500kHz Switching Frequency
  • Selectable Inductor Current Limit (125mA, 250mA, or 500mA)
  • 18µA Operating Supply Current
  • 0.1µA Shutdown Current
  • Avaiable in Two Small Packages
    • 6-Pin TDFN
    • 6-Pin SOT23
 

Applications/Uses

  • Cell Phones/Cordless Phones
  • Handy Terminals
  • LCD Bias Generators
  • Organizers
  • Palmtop Computers
  • PDAs and Other Handheld Devices
   

Key Specifications:

Step-Up Switching Regulators
Part Number VIN
(V)
VIN
(V)
VOUT
(V)
VOUT
(V)
Max. IOUT
(A)
Max. IOUT
(A)
Output Adjust. Method DC-DC Outputs Oper. Freq.
(kHz)
Package/Pins Smallest Available Pckg.
(mm2)
Budgetary Price
min max min max max w/pins See Notes
MAX1605  2.5 5.5 2.5 28 0.02 0.02 Resistor 1 500
SOT/6
TDFN-EP/6
9 $1.66 @1k
See All Step-Up Switching Regulators (95)
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 prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

MAX1605: Typical Operating Circuit
Typical Operating Circuit

More Information

Topmark Coding MAX1605
New Product Press Release 2000-07-18 ]

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Information Index

Document Ref.: 19-1666 Rev 1; 2003-11-04
This page last modified: 2007-07-23




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