MAX1606

PRODUCTION

28V Internal Switch LCD Bias Supply with True Shutdown™

LCD Bias Supply Uses Internal Switches to Deliver Up to 28V, and True Shutdown

Data Sheet (Rev. 1) Product Selection Table

Part Models: 2
1ku List Price: Starting From $2.09

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Overview

Adjustable Output Voltage up to 28V
20mA at 20V from a Single Li+ Battery
True Shutdown (Output Disconnected from Input)
Output Short-Circuit Protection
88% Efficiency
Up to 500kHz Switching Frequency
Selectable Inductor Current Limit (125mA, 250mA, or 500mA)
0.1µA Shutdown Current
8-Pin µMAX Package

The MAX1606 is a step-up DC-DC converter that contains a 0.5A internal power switch and a 0.5A output isolation switch in an 8-pin µMAX® 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 28V.

The MAX1606 uses a unique control scheme that provides high 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 true shutdown mode that saves power by disconnecting the output from the input. The MAX1606 is ideal for small LCD panels with low current requirements but can also be used in other applications. A MAX1606 evaluation kit is available to help speed up design time.

Applications

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

Part Models: 2
1ku List Price: Starting From $2.09

Documentation

Data Sheet 1

MAX1606: 28V Internal Switch LCD Bias Supply with True Shutdown™ Data Sheet (Rev.1) 03/16/2004

Reliability Data 1

MAX1606 Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX1606EUA+	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX1606EUA+T	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX1606

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Features and Benefits

Input Voltage
- +0.8V to +5.5V (V_IN)
- +2.4V to +5.5V (V_CC)
Output Voltage
- +18V Output Up to 20mA (as configured)
True Shutdown (output disconnected from input)
Output Voltage Adjustable with Resistors
Adjustable Inductor Current-Limit Setting
Internal MOSFET Switches
1µA (max) IC Shutdown Current
Switching Frequency Up to 500kHz
Surface-Mount Components
Fully Assembled and Tested

Product Details

The MAX1606 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains a step-up switching converter that generates a positive voltage to drive low-power LCD displays. The circuit is configured for a +18V output voltage and provides up to 20mA. Higher output voltages are possible by selecting different components.

The IC operates from a +2.4V to +5.5V supply voltage but can boost battery voltages as low as +0.8V up to +28V at the output. The IC also offers a true shutdown mode that disconnects the output from the input. Three different inductor current limits can be evaluated with the EV kit as configured.

Applications