LTM4619 - Dual, 26VIN, 4A DC/DC μModule Regulator

Features

  • Complete Standalone Power Supply
  • Wide Input Voltage Range: 4.5V to 26.5V (EXTVCC Available for VIN ≤ 5.5V)
  • Dual 180° Out-of-Phase Outputs with 4A DC Typical, 5A Peak Output Current for Each
  • Dual Outputs with 0.8V to 5V VOUT Range
  • Output Voltage Tracking
  • ±1.5% Total DC Output Error
  • Current Mode Control/Fast Transient Response
  • Power Good
  • Phase-Lockable Fixed Frequency 250kHz to 780kHz
  • On Board Frequency Synchronization
  • Parallel Current Sharing
  • Selectable Burst Mode® Operation
  • Output Overvoltage Protection
  • Small Surface Mount Footprint, Low Profile (15mm × 15mm × 2.8mm) LGA Package

Typical Application

LTM4619
LTM4619
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Description

The LTM4619 is a complete dual 4A step-down switching mode DC/DC power supply. Included in the package are the switching controller, power FETs, inductor, and all support components. Operating over input voltage ranges of 4.5V to 26.5V, the LTM4619 supports two outputs with voltage ranges of 0.8V to 5V, each set by a single external resistor. Its high efficiency design delivers 4A continuous current (5A peak) for each output.

High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The two outputs are interleaved with 180° phase to minimize the ripple noise and reduce the I/O capacitors. The device supports frequency synchronization and output voltage tracking for supply rail sequencing. Burst Mode operation or pulse-skipping mode can be selected for light load operations.

Fault protection features include overvoltage protection, overcurrent protection and foldback current limit for short-circuit protection.

The low profile package (2.8mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The power module is offered in a space saving and thermally enhanced 15mm × 15mm × 2.8mm LGA package. The LTM4619 is Pb-free and RoHS compliant.
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Packaging

15mm x 15mm x 2.8mm LGA

LTM4619
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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTM4619EV#PBF LGA 144 E $23.93 $16.75 View
LTM4619IV#PBF LGA 144 I $26.33 $18.43 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

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Applications

  • Telecom and Networking Equipment
  • Servers
  • Storage Cards
  • ATCA Cards
  • Industrial Equipment
  • Point of Load Regulation
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Simulate

To simulate selected Linear Technology products, please download LTSpice / SwitcherCAD III. This powerful schematic capture and simulation tool includes macro models for 80% of Linear Technology's switching regulators, over 200 op amp models, as well as resistors, transistors and MOSFET models.

For other simulation tools, visit our Design Simulation and Device Models page.

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