ADP1612

PRODUCTION

650 kHz /1.3 MHz Step-Up PWM DC-to-DC Switching Converter with 1.4 A Current Limit

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Overview

  • Current limit
    1.4 A
  • Minimum input voltage
    1.8 V
  • Pin-selectable 650 kHz or 1.3 MHz PWM frequency
  • Adjustable output voltage up to 20 V
  • Adjustable soft start
  • Undervoltage lockout
  • Thermal shutdown
  • 8-lead MSOP

The ADP1612/ADP1613 are step-up dc-to-dc switching con-verters with an integrated power switch capable of providing an output voltage as high as 20 V. With a package height of less than 1.1 mm, the ADP1612/ADP1613 are optimal for space-constrained applications such as portable devices or thin film transistor (TFT) liquid crystal displays (LCDs).

The ADP1612/ADP1613 operate in current mode pulse-width modulation (PWM) with up to 94% efficiency. Adjustable soft start prevents inrush currents when the part is enabled. The pin-selectable switching frequency and PWM current-mode architecture allow for excellent transient response, easy noise filtering, and the use of small, cost-saving external inductors and capacitors. Other key features include undervoltage lockout (UVLO), thermal shutdown (TSD), and logic controlled enable.

The ADP1612/ADP1613 are available in the lead-free 8-lead MSOP.

Applications
  • TFT LCD bias supplies
  • Portable applications
  • Industrial/instrumentation equipment
  • ADP1612
    650 kHz /1.3 MHz Step-Up PWM DC-to-DC Switching Converter with 1.4 A Current Limit
    ADP1612/ADP1613 Typical Application Diagram
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    Tools & Simulations

    LTspice


    Models for the following parts are available in LTspice:

    • ADP1612

    ADP161x SEPIC-Cuk Design Tool

    Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

    Open Tool

    ADP161x Coupled-SEPIC Design Tool

    Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

    Open Tool

    ADP161x Boost Regulator Design Tool

    Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

    Open Tool
    LTspice

    LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


    Evaluation Kits

    EVAL-ADP1612

    ADP1612 Evaluation Hardware

    Product Details

    The ADP1612/ADP1613 evaluation module is a complete step-up dc-to-dc switching converter application with components selected to allow operation over the full range of input and load conditions for the 5 V (ADP1612) and 12 V (ADP1613) output voltages. The evaluation boards can be adjusted for different output voltages by changing R1 and R2. In addition, L1, D1, C3, and R3 may need to be adjusted and should be recalculated to ensure stable operation.

    The ADP1612/ADP1613 evaluation module operates in pulse-width modulation (PWM) current mode with up to 94% efficiency. The shunt-selectable switching frequency and PWM current-mode architecture allow for excellent transient response, easy noise filtering, and the use of small, cost-saving external inductors and capacitors. Other key features include a 33 nF soft start capacitor, undervoltage lockout (UVLO), thermal shutdown (TSD), and jumper selected enable. The evaluation module demonstrates the operation and performance of the ADP1612/ADP1613.

    EVAL-ADP1612
    ADP1612 Evaluation Hardware

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