LTM4633

RECOMMENDED FOR NEW DESIGNS

Triple 10A Step-Down DC/DC μModule (Power Module) Regulator

Data Sheet Product Selection Table
Part Models
5
1ku List Price
Starting From $42.32
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Part Details

  • Three Independent 10A DC Output Current Regulator Channels
  • Input Voltage Range: 4.7V to 16V
    • 2.375V to 16V with External 5V Bias
  • VOUT1,2 Voltage Range: 0.8V to 1.8V
  • VOUT3 Voltage Range: 0.8V to 5.5V
  • ±1.5% Maximum Total DC Output Error
  • Current Mode Control/Fast Transient Response
  • Frequency Synchronization
  • Output Overvoltage and Overcurrent Protection
  • Multiphase Operation with Current Sharing on VOUT1 and VOUT2
  • General Purpose Temperature Monitors
  • Soft-Start/Voltage Tracking
  • Power Good Monitors
  • 15mm × 15mm × 5.01mm BGA Package
LTM4633
Triple 10A Step-Down DC/DC μModule (Power Module) Regulator
12V Input to 1.0V, 1.5V and 3.3V Output Regulator Efficiency vs Load current
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Data Sheet

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

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Hardware Ecosystem

Parts Product Life Cycle Description
µModule Buck Regulators 2
LTM4641
RECOMMENDED FOR NEW DESIGNS 38V, 10A DC/DC µModule (Power Module) Regulator with Advanced Input and Load Protection
LTM4649
RECOMMENDED FOR NEW DESIGNS 10A Step-Down DC/DC μModule (Power Module) Regulator
Multiple Output Buck Regulators 1
LTM4644
LTM4644-1
Quad DC/DC μModule (Power Module) Regulator with Configurable 4A Output Array
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LTM4633

LTpowerCAD 1

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.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
DC1905B

LTM4633 Demo Board | High Efficiency, Triple Output Step-Down μModule Regulator

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Product Details

Demonstration circuit 1905B features the LTM4633EY, a high efficiency, triple output step-down power μModule® regulator. The input voltage range is from 4.7V to 16V with a common input source, or 2.375V to 16V with an external bias supply. The output voltage range is 0.8V to 1.8V for channels 1 and 2, and 0.8V to 5.5V for channel 3. Derating is necessary for certain VIN, VOUT, frequency, and thermal conditions. See Table 1 in the user guide for Thermally Viable Operating Conditions. The DC1905B offers access to the TRACK/SS pins, allowing the user to program output tracking or soft-start period. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE jumper (JP4) selects pulse-skipping mode for noise sensitive applications or Burst Mode® operation in less noise sensitive applications. Channels 1 and 2 can be connected in parallel for a single 20A output solution with optional jumper resistors. The LTM4633 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit 1905B.

eval board
schematic 5
DC1905A

OBSOLETE: LTM4633 Demo Board | Triple Buck µModule Regulator, 4.7V ≤ VIN ≤ 16V, VOUT1 & VOUT2 = 0.8V to 1.8V @ 10A, VOUT3 = 0.8V to 5.5V @ 10A

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Product Details

This evaluation board is obsolete and no longer recommended. The replacement board is the DC1905B.

Demonstration circuit DC1905A features the LTM4633EY, a high efficiency, triple 10A step-down power μModule® regulator. The input voltage range is from 4.7V to 16V with common input source, or 2.375V to 16V with an external bias supply. The output voltage range is 0.8V to 1.8V for Channel 1 and Channel 2, 0.8V to 5.5V for Channel 3. Derating is necessary for certain VIN, VOUT, frequency and thermal conditions. The DC1905A offers access to the TRACK/SS pins allowing the user to program output tracking or soft-start period. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE jumper (JP4) selects pulse-skipping mode for noise sensitive applications or Burst-Mode® operation in less noise sensitive applications. Channel 1 and 2 can be connected in parallel for a single 20A output solution with optional jumper resistors.
DC1905B
LTM4633 Demo Board | High Efficiency, Triple Output Step-Down μModule Regulator
DC1905B Evaluation Board DC1905B Evaluation Board - Top View DC1905B Evaluation Board - Bottom View Measurement Setup of DC1905B
DC1905A
OBSOLETE: LTM4633 Demo Board | Triple Buck µModule Regulator, 4.7V ≤ VIN ≤ 16V, VOUT1 & VOUT2 = 0.8V to 1.8V @ 10A, VOUT3 = 0.8V to 5.5V @ 10A
DC1905A - Schematic

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