LTM4655
Info : RECOMMENDED FOR NEW DESIGNS
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LTM4655

EN55022B Compliant 40V, Dual 4A or Single 8A Step-Down or 50W Inverting μModule Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 5
1ku List Price Starting From $21.34
Features
  • Dual 4A/Single 8A Low EMI Switch Mode Power Supply
  • EN55022 Class B Compliant
  • Two Fully Independent Channels, Each Configurable for Positive or Negative Output Voltage Polarity
  • Output Voltage Range: 0.5V ≤ |VOUTn + – VOUTn | ≤ 26.5V
  • Wide Input Voltage Range: Up to 40V
    • 3.1V or 3.6V Start-Up, Configuration-Dependent
  • ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature
  • Analog Output Current Indicator (Positive-VOUT Only)
  • LDOOUT: 5V Fixed, 25mA Capable LDO
  • Parallelable with LTM4651/LTM4653
  • Constant-Frequency Current Mode Control
  • Power Good Indicators and Programmable Soft-Start
  • Overcurrent and Overtemperature Protection
  • 16mm × 16mm × 5.01mm BGA Package
Additional Details
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The LTM4655 is an ultralow noise 40V, dual 4A or single 8A DC/DC μModule® regulator designed to meet the radiated emissions requirements of EN55022. Its channels are fully independent, parallelable and capable of delivering positive or negative output polarity. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controllers, power MOSFETs, inductors, filters and support components. A 5V, 25mA LDO and clock generator enable phase interleaving of the power switching stages, for improved EMC performance.

The LTM4655 can regulate positive VOUTn + voltages between 0.5V and 26.5V from a 3.1V to 40V input. The LTM4655 can regulate negative VOUTn voltages between –0.5V and –26.5V from a maximum input range of 3.6V to 40V, with the span from VINn to VOUTn not to exceed 40V. A switching frequency range of 250kHz to 3MHz is supported.

The LTM4655 is offered in a 16mm × 16mm × 5.01mm BGA package with SnPb or RoHS compliant terminal finish.

APPLICATIONS

  • Automated Test and Measurement
  • Avionics and Industrial Control Systems
  • Video, Imaging and Instrumentation
Part Models 5
1ku List Price Starting From $21.34

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

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Feb 5, 2020

- 20_0127

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Filter by Model

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Part Models

Product Lifecycle

PCN

Jul 21, 2021

- 21_0159

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Ink Mark to Laser Mark Conversion for µModule

LTM4655EY#PBF

PRODUCTION

LTM4655IY#PBF

PRODUCTION

LTM4655MPY

PRODUCTION

LTM4655MPY#PBF

PRODUCTION

Feb 5, 2020

- 20_0127

arrow down

Supplier Material Change for µModule

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

reference details image

DC2594A

LTM4655 Low EMI Dual 13V to 28VIN, +12V/4AOUT and –12V/2.2AOUT Negative μModule Regulator

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DC2594A

LTM4655 Low EMI Dual 13V to 28VIN, +12V/4AOUT and –12V/2.2AOUT Negative μModule Regulator

LTM4655 Low EMI Dual 13V to 28VIN, +12V/4AOUT and –12V/2.2AOUT Negative μModule Regulator

Features and Benefits

  • SSFM Jumper for Spread Spectrum Options
  • CLKIN Inputs for External Sync
  • PGOOD Signals for Each Output

Product Detail

Demonstration circuit 2594A is a step-down DC/DC converter and an inverting DC/DC converter with a 13V to 28V input voltage range, +12V at 4A, and –12V at up to 2.5A outputs featuring the LTM4655. The LTM4655 is a EN55022B compliant 40V, dual 4A or single 8A step-down or 50W inverting DC/DC μModule® Regulator.

The switching frequencies of both channels are set at 1.2MHz on DC2594A. If the output voltage collapses sufficiently due to an overload or short-circuit condition, the internal oscillator will fold-back to one-fifth of the LTM4655’s programmed switching frequency, protecting the power switch from damage.

The two channels can be paralleled for higher output current. See the data sheet for more information on setting up the board for paralleling the two outputs.

The LTM4655 data sheet gives a complete description of the device, its operation and application information. The data sheet must be read in conjunction with the demo manual prior to working on or modifying DC2594A.

reference details image

DC2899A

LTM4655 | Low EMI Dual 13V–28VIN, –12V/2.2AOUT Negative μModule Regulator

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DC2899A

LTM4655 | Low EMI Dual 13V–28VIN, –12V/2.2AOUT Negative μModule Regulator

LTM4655 | Low EMI Dual 13V–28VIN, –12V/2.2AOUT Negative μModule Regulator

Product Detail

Demonstration circuit 2899A is a dual inverting DC/DC converter with a 13V to 28V input voltage range, two 12V outputs at up to 2.5A each featuring the LTM4655. The LTM4655 is a EN55022B compliant 40V, dual 4A or single 8A step-down or 50W inverting DC/DC μModule® regulator.

The switching frequencies of both channels are set at 1.2MHz on DC2899A. If the output voltage collapses sufficiently due to an overload or short-circuit condition, the internal oscillator will foldback to one-fifth of the LTM4655’s programmed switching frequency, protecting the power switch from damage.

Key features of this board include:

  • SSFM Jumper for Spread Spectrum Options
  • CLKIN Inputs for External Sync
  • PGOOD Signals for Each Output

The two channels can be paralleled for higher output current. See the data sheet for more information on setting up the board for paralleling the two outputs.

The LTM4655 data sheet gives a complete description of the device, its operation and application information. The data sheet must be read in conjunction with the demo manual prior to working on or modifying DC2899A.

reference details image

DC2898A

LTM4655 | Low EMI Dual 13V to 40VIN, 12V/4AOUT μModule Regulator

zoom

DC2898A

LTM4655 | Low EMI Dual 13V to 40VIN, 12V/4AOUT μModule Regulator

LTM4655 | Low EMI Dual 13V to 40VIN, 12V/4AOUT μModule Regulator

Product Detail

Demonstration circuit 2898A is a dual DC/DC converter with a 13V to 40V input voltage range, two 12V outputs at 4A each featuring the LTM4655. The LTM4655 is a EN55022B compliant 40V, dual 4A or single 8A step-down or 50W inverting DC/DC μModule® regulator.

The switching frequencies of both channels are set at 1.2MHz on DC2898A. If the output voltage collapses sufficiently due to an overload or short-circuit condition, the internal oscillator will foldback to one-fifth of the LTM4655’s programmed switching frequency, protecting the power switch from damage.

Key features of this board include:

  • SSFM Jumper for Spread Spectrum Options
  • CLKIN Inputs for External Sync
  • PGOOD Signals for Each Output

The two channels can be paralleled for higher output current. See the data sheet for more information on setting up the board for paralleling the two outputs.

The LTM4655 data sheet gives a complete description of the device, its operation and application information. The data sheet must be read in conjunction with the demo manual prior to working on or modifying DC2898A.

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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