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28V Internal Switch LCD Bias Supply with True Shutdown™

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

Product Details

Key Features

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 0.8
VIN (V) (max) 5.5
VOUT1 (V) (min) 1.25
VOUT1 (V) (max) 28
IOUT1 (A) (max) 0.02
Switch Type Internal
Output Adjust. Method Resistor
IQ (mA) (typ) 0.16
Shutdown Mode Supply Current (µA) (typ) 0.1
Shutdown Mode Supply Current (µA) (max) 1
# DC-DC Outputs 1
Switching Frequency (kHz) 500
Package/Pins UMAX/8
Budgetary
Price (See Notes)
2.09
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Simplified Block Diagram

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Parameters

Parametric specs for Step-Up Switching Regulators
VIN (V) (min) 0.8
VIN (V) (max) 5.5
VOUT1 (V) (min) 1.25
VOUT1 (V) (max) 28
IOUT1 (A) (max) 0.02
Switch Type Internal
Output Adjust. Method Resistor
IQ (mA) (typ) 0.16
Shutdown Mode Supply Current (µA) (typ) 0.1
Shutdown Mode Supply Current (µA) (max) 1
# DC-DC Outputs 1
Switching Frequency (kHz) 500
Package/Pins UMAX/8
Budgetary
Price (See Notes)
2.09

Key Features

  • 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

Applications/Uses

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

Description

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.

Simplified Block Diagram

MAX1606: Functional Diagram MAX1606: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.