LTM4691

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. A) Product Selection Table

Part Models: 4
1ku List Price: Starting From $3.34

Viewing:

Overview

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

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

Documentation

Data Sheet 1

LTM4691: Low V_IN, High Efficiency, Dual 2A Step-Down DC/DC µModule Regulator Datasheet (Rev.A) 10/26/2020

User Guide 1

DC2910A - Demo Manual (Rev.0) 03/16/2020

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTM4691EV#PBF	24-Lead (3mm × 4mm × 1.18mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM4691EY#PBF	24-Lead BGA (4mm x 3mm x 1.48mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM4691IV#PBF	24-Lead (3mm × 4mm × 1.18mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTM4691IY#PBF	24-Lead BGA (4mm x 3mm x 1.48mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 25, 2020 - 20_0123 Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia
		PCN20_0123_Form Material_Report Test Correlation Report Other Qualification Results Summary
LTM4691EV#PBF	PRODUCTION
LTM4691IV#PBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTM4691

LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:

LTM4691

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

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

Buy Now View Details

Product Details

Demonstration circuit 2910A is low V_IN, 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.

Resources

DC2910A - Schematic
3/16/2020

DC2910A - Demo Manual (Rev.0)
3/16/2020

DC2910A - Design Files
3/16/2020

Latest Discussions

2 Years Ago

3 Years Ago