LTM4691
Info : RECOMMENDED FOR NEW DESIGNS
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LTM4691

Low VIN, High Efficiency, Dual 2A Step-Down DC/DC µModule Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $3.34
Features
  • Tiny Surface Mount, Low Profile 3mm × 4mm × 1.18mm LGA Package and 3mm × 4mm × 1.48mm BGA Package
  • Input Voltage Range: 2.25V to 3.6V
  • Dual 2A DC Output Current
  • ±1.5% Total Output Voltage Regulation
  • Current Mode Control, Fast Transient Response
  • External Frequency Synchronization
  • 180° Out-of-Phase Operation
  • Selectable Pulse-Skipping Mode/Burst Mode® Operation/Forced Continuous Mode
  • Power Good Indicator
  • Internal Soft-Start
  • Internal Compensation
  • Overvoltage, Overcurrent and Overtemperature Protection
Additional Details
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The LTM4691 is a complete dual 2A output switching mode DC/DC power supply in a tiny 3mm × 4mm × 1.18mm LGA package and a 3mm × 4mm × 1.48mm BGA package. Included in the package are the switching controller, power FETs, inductors and all supporting components. Operating over an input voltage range of 2.25V to 3.6V, the LTM4691 supports two outputs with programmable output voltage range from 0.5V to 2.5V set by external resistors. Its high efficiency design delivers up to 2A continuous current on each output. Only bulk input and output capacitors are needed.

The LTM4691 operates in forced continuous mode for low noise pulse-skipping mode or Burst Mode operation for high efficiency at lights loads. The typical buck switching frequency is 2MHz and can be synchronized from 1MHz to 3MHz. Its high switching frequency and a current mode architecture enables a very fast transient response to line and load changes without sacrificing stability.

Other features include precision run thresholds, a PGOOD signal, output overvoltage protection, thermal shutdown and output short-circuit protection. The LTM4691 is Pb-free and RoHS compliant.

Applications

  • Telecom, Networking and Industrial Equipment
  • Point-of-Load Regulation
  • FPGA, ASIC Core Supplies
Part Models 4
1ku List Price Starting From $3.34

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTM4691EV#PBF
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LTM4691EY#PBF
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LTM4691IV#PBF
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LTM4691IY#PBF
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Product Lifecycle

PCN

Apr 25, 2020

- 20_0123

Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

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Part Models

Product Lifecycle

PCN

Apr 25, 2020

- 20_0123

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Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2910A

LTM4691 Demo Board | Low VIN, High Efficiency, Dual 2A Step-down μModule DC/DC Converter

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DC2910A

LTM4691 Demo Board | Low VIN, High Efficiency, Dual 2A Step-down μModule DC/DC Converter

LTM4691 Demo Board | Low VIN, High Efficiency, Dual 2A Step-down μModule DC/DC Converter

Product Detail

Demonstration circuit 2910A is low VIN, high efficiency, and dual 2A output µModule DC/DC converter. The board operates by default at a fixed 2MHz and can be synchronized from 1MHz to 3MHz via the MODE/SYNC pin. With its high switching frequency and current mode architecture, a fast transient response to line and load changes is possible without sacrificing stability. The DC2910A can be used in forced continuous mode or pulse skip mode for low noise, or in burst mode operation for high efficiency at light loads. The demo board features the LTM4691, which is available in a low profile 3mm x 4mm x 1.2mm LGA package. Please see the LTM4691 datasheet for more detailed information.

It is recommended to read the data sheet for the LTM4691 prior to making any changes to the DC2910A.

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.

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