LTM4655

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. B) Product Selection Table
Part Models
5
1ku List Price
Starting From $21.34
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Part Details

  • 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
LTM4655
EN55022B Compliant 40V, Dual 4A or Single 8A Step-Down or 50W Inverting μModule Regulator
LTM4655 Application Circuit LTM4655 Performance Graph LTM4655 Pin Configuration
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 3

Technical Articles 2

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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTM4655
LTspice

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

eval board
schematic 1
DC2594A

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

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Features and Benefits

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

Product Details

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.

eval board
schematic 2
schematic 3
schematic 4
DC2899A

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

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Product Details

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.

eval board
schematic 5
schematic 6
schematic 7
DC2898A

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

Buy Now View Details

Product Details

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.
DC2594A
LTM4655 Low EMI Dual 13V to 28VIN, +12V/4AOUT and –12V/2.2AOUT Negative μModule Regulator
DC2594A Evaluation Board
DC2899A
LTM4655 | Low EMI Dual 13V–28VIN, –12V/2.2AOUT Negative μModule Regulator
DC2899A Evaluation Board DC2899A Evaluation Board - Top View DC2899A Evaluation Board - Bottom View
DC2898A
LTM4655 | Low EMI Dual 13V to 40VIN, 12V/4AOUT μModule Regulator
DC2898A Evaluation Board DC2898A Evaluation Board - Top View DC2898A Evaluation Board - Bottom View

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