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MAX1677EVKIT

Evaluation Kit for the MAX1677

Product Details

Key Features

Simplified Block Diagram

Technical Docs

Data Sheet Evaluation Kit for the MAX1677 Jan 03, 2001

Support & Training

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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.

Key Features

  • +0.7V to MAINOUT Battery Input Voltage
  • Dual Output Voltages
    • +3.3V Main Output and +20V LCD Bias Output
    • +3.3V Main Output and -20V LCD Bias Output
  • All Outputs Also Adjustable with External Resistors
  • Up to 350mA from 2-Cell Input (Main Output )
  • Up to 140mA from 1-Cell Input (Main Output)
  • Up to 12mA Output Current (LCD Bias Output)
  • Internal N-Channel Switches and Synchronous Rectifier
  • 1µA IC Shutdown Current
  • 300kHz Switching Frequency
  • Surface-Mount Components
  • Fully Assembled and Tested

Applications/Uses

  • Handheld Terminals
  • PDAs
  • Portable Instrumentation
  • Portable Phones

Description

The MAX1677 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains two separate switching-regulator circuits. The first circuit is configured for a +3.3V main output and +20V LCD bias voltage. It accepts inputs from +0.7V to +3.3V. The main +3.3V output supplies up to 350mA from a 2-cell input, or 140mA from a 1-cell input, while the LCD bias output supplies up to 12mA at +20V.

The second circuit converts a +0.7V to +3.3V battery voltage to a +3.3V main output and a -20V LCD bias voltage. The main +3.3V output supplies up to 350mA from a 2-cell input, or 140mA from a 1-cell input, while the LCD bias output supplies 10mA at -20V.

The MAX1677 features internal N-channel MOSFET switches, a synchronous rectifier, low-battery comparator, and selectable PFM/PWM mode. The MAX1677 EV kit provides low quiescent current and high efficiency—up to 95% for maximum battery life. Operation at 300kHz allows the use of tiny surface-mount inductors.

Simplified Block Diagram

Technical Docs

Data Sheet Evaluation Kit for the MAX1677 Jan 03, 2001

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.