LTM4693
Info : RECOMMENDED FOR NEW DESIGNS
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LTM4693

Ultrathin Low VIN, 2A Buck-Boost μModule Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $4.15
Features
  • Wide Input Voltage Range: 2.6V to 5.5V
  • Adjustable Output Voltage Range: 1.8V to 5.5V
  • 2A of Continuous Output Current with VIN ≥ VOUT (Buck Mode and Buck-Boost Mode); Minimum 1A Continuous Output Current with VIN < VOUT (Boost Mode).
  • Low Ripple Buck-Boost Architecture
  • Programmable Soft-Start and VIN UVLO
  • Burst Mode IQ 15μA for High Efficiency at Light Loads
  • Ultrathin, Small Surface Mount Footprint
  • 3.5mm × 4mm × 1.25mm LGA Package
Additional Details
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The LTM4693 is an ultrathin, highly efficient, 2A buck-boost μModule® DC/DC converter that operates from input voltages above, below or equal to the output voltage. Included in the package are the switching controller, power MOSFETs, inductor and support components. The LTM4693’s advanced topology provides a continuous transfer through all operating modes. VIN operation from 2.6V to 5.5V covers a wide variety of power sources including typical 3.3V and 5V. Output voltage ranging from 1.8V to 5.5V is set by an external resistor. Only a few external components are needed for a typical application.

Selectable Burst Mode® operation reduces quiescent current to 15μA, ensuring high efficiency across the entire load range. To optimize applications for highest efficiency, the switching frequency can be programmed between 1MHz to 4MHz or synchronized to an external clock for noise sensitive circuits.

LTM4693 is available in ultrathin, 3.5mm × 4mm ×1.25mm LGA Package. The LTM4693 is Pb-free and RoHS compliant.

APPLICATIONS

  • Telecom, Datacom (Optical Modules) and Industrial Equipment
  • Medical and Industrial Instruments
  • Wireless RF Transmitter
  • Battery Powered System
Part Models 2
1ku List Price Starting From $4.15

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTM4693EV#PBF
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LTM4693IV#PBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC3016A

LTM4693 | 2.6V - 5.5V Input to 1.8V - 5V Output, Ultrathin 2A Buck-Boost μModule Regulator

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DC3016A

LTM4693 | 2.6V - 5.5V Input to 1.8V - 5V Output, Ultrathin 2A Buck-Boost μModule Regulator

LTM4693 | 2.6V - 5.5V Input to 1.8V - 5V Output, Ultrathin 2A Buck-Boost μModule Regulator

Product Detail

Demonstration circuit DC3016A is a buck-boost power supply featuring the LTM4693, ultrathin, highly efficient, 2A buck-boost μModule® regulator. The LTM4693 regulates an output voltage above, below, or equal to the input voltage. This demonstration circuit is designed to have an input voltage from 2.6V to 5.5V with selectable 1.8V, 2.5V, 3.3V, and 5V output voltage up to 2A load. Derating may be necessary for specific VIN, VOUT, and thermal conditions.

This demo board includes a mode selector that allows the converter to run in CCM or Burst Mode® operation. Synchronization to an external clock is also possible. The switching frequency can be adjusted from 1MHz to 4MHz by a resistor. And the soft-start period is programmable by an external capacitor. The LTM4693 data sheet gives a complete description of these functions, operation, and application information. The data sheet must be read in conjunction with this quick start guide for demo circuit 3016A.

Tools & Simulations

Tools & Simulations 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Reference Designs

Reference Designs 1

Figure 1. CN0551 Simplified Block Diagram

USB-Powered, 433.92 MHz RF Power Amplifier with Overtemperature Management

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CN0551

USB-Powered, 433.92 MHz RF Power Amplifier with Overtemperature Management

CN0551

Circuits from the lab

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USB-Powered, 433.92 MHz RF Power Amplifier with Overtemperature Management

Features and Benefits

  • +35 dB Gain
  • 433 MHz ISM Band Optimized
  • 50 Ohm Input and Output Impedance Matched
  • Overtemperature Monitoring
  • Automatic Thermal Shutoff & Turn on
View Detailed Reference Design external link

Design & Integration Tools

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