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LTM4609 - 36VIN, 34VOUT High Efficiency Buck-Boost DC/DC μModule

Features

uModule Packaging, Assembly and Thermal Performance
  • Click Here for LTM4609 Evaluation Kit
  • Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
  • Wide VIN Range: 4.5V to 36V
  • Wide VOUT Range: 0.8V to 34V
  • IOUT: 4A DC (10A DC in Buck Mode)
  • Up to 98% Efficiency
  • Current Mode Control
  • Power Good Output Signal
  • Phase-Lockable Fixed Frequency: 200kHz to 400kHz
  • Ultra-Fast Transient Response
  • Current Foldback Protection
  • Output Overvoltage Protection
  • Small, Low Profile Surface Mount LGA Package (15mm × 15mm × 2.8mm)

Typical Application

LTM4609
LTM4609
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Description

The LTM4609 is a high efficiency switching mode buckboost power supply. Included in the package are the switching controller, power FETs and support components. Operating over an input voltage range of 4.5V to 36V, the LTM4609 supports an output voltage range of 0.8V to 34V, set by a resistor. This high efficiency design delivers up to 4A continuous current in boost mode (10A in buck mode). Only the inductor, sense resistor, bulk input and output capacitors are needed to finish the design.

The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The high switching frequency and current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The LTM4609 can be frequency synchronized with an external clock to reduce undesirable frequency harmonics.

Fault protection features include overvoltage and foldback current protection. The DC/DC μModule™ is offered in a small thermally enhanced 15mm × 15mm × 2.8mm LGA package. The LTM4609 is Pb-free and RoHS compliant.
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Packaging

15mm x 15mm x 2.8mm LGA

LTM4609
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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTM4609EV#PBF LGA 141 E $32.22 $22.55 View
LTM4609IV#PBF LGA 141 I $35.43 $24.80 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.

Evaluation Kits

Part Number Description Price
DC1477A LTM4609EV Demo Board | 36Vin, 34Vout High Efficiency Buck-Boost DC/DC uModules $65.00
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Applications

  • Telecom, Servers and Networking Equipment
  • Industrial and Automotive Equipment
  • High Power Battery-Operated Devices
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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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