LTM4723

RECOMMENDED FOR NEW DESIGNS

Low VIN, Ultrathin Dual 5A or Single 10A Step‐Down DC-to-DC μModule Regulator

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Overview

  • Input Voltage Range: 2.25V to 5.5V
  • Programmable 0.5V to 3.6V Output
  • Dual 5A or Single 10A Output Current
  • ±1% Total Output Voltage Regulation
  • Current Mode Control, Fast Transient
  • External CLK Synchronization: 1MHz to 3MHz
  • 180° Out‐of‐Phase Operation
  • Output Voltage Tracking and Soft-Start
  • Burst Selectable Pulse‐Skipping Mode (PSM), Burst Mode® Operation, Forced Continuous Mode (FCM) or at Light Load
  • Overvoltage, Overcurrent, and Overtemperature Protection
  • Available in a Tiny, Ultrathin 36-Terminal, 4.25mm × 4.25mm × 1.15mm, LGA package
LTM4723
Low VIN, Ultrathin Dual 5A or Single 10A Step‐Down DC-to-DC μModule Regulator
LTM4723 Typical Application LTM4723 Efficiency LTM4723 Pin Configuration LTM4723 Chip Illustration
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Evaluation Kits

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EVAL-LTM4723-AZ

LTM4723: Low VIN, Ultrathin Dual 5A or Single 10A Step‐Down DC-to-DC μModule Regulator

Features and Benefits

  • Ultra-Compact Footprint: Combines a Switching Controller, MOSFETs, Inductors, and Supported Components into a Tiny 4.25mm × 4.25mm × 1.15mm Land Grid Array (LGA) Package, Saving Significant Board Space and Simplifying Layout.
  • Flexible Dual/Single Output: Delivers Dual 5A Outputs or can be Paralleled into a Single 10A Output to Power Multiple Rails or Single High-Current Loads.
  • Wide Voltage Range and Precision: Supports a 2.25V to 5.5V Input and a Highly Precise, Programmable 0.5V to 3.6V Output (±1% regulation) for Sensitive Digital Logic, Field-Programmable Gate Arrays (FPGAs), and Application-Specific Integrated Circuits (ASICs).

Product Details

The EVAL-LTM4723-AZ evaluation board features the LTM4723, a high-efficiency, high-power density DC-to-DC step-down μModule® regulator that operates as either a dual 5A or a single 10A supply. The evaluation board supports an input voltage range of 2.25V to 5.5V. By default, VOUT1 (Channel 1) is configured for 1.2V at 5A Max, and VOUT2 (Channel 2) is configured for 1.8V at 5A Max. The typical switching frequency is 2MHz.

The integrated loop compensation simplifies design optimization, requiring only a few output capacitors and an optional feedforward capacitor to achieve the desired loop bandwidth and load transient performance. A user-selectable operating mode allows optimization for either light-load efficiency or low-noise operation. Pulse-skipping mode (PSM) and Burst Mode® (BM) operation provide higher efficiency at light loads, while forced continuous mode (FCM) is preferred for noise-sensitive applications.

The LTM4723 employs a constant-frequency, peak current mode control architecture with integrated internal compensation, delivering fast transient response to input voltage and load changes while maintaining loop stability and providing cycle-by-cycle current limiting.

Review the LTM4723 data sheet and this user guide before operating or modifying the EVAL-LTM4723-AZ evaluation board.

EVAL-LTM4723-AZ
LTM4723: Low VIN, Ultrathin Dual 5A or Single 10A Step‐Down DC-to-DC μModule Regulator
EVAL-LTM4723-AZ Top Angle Evaluation Board EVAL-LTM4723-AZ Top Evaluation Board EVAL-LTM4723-AZ Bottom Evaluation Board

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