SHENZHEN GANGXINLI ELECTRONICS CO.,LTD
Professional Electronic Component Distributor!
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SHENZHEN GANGXINLI ELECTRONICS CO.,LTD
Professional Electronic Component Distributor!
2026/1/15
The LTM4644EY#PBF is a quad-channel step-down DC/DC μModule® regulator from Analog Devices that integrates controllers, power FETs, inductors, and protection circuitry in a compact package, providing wide input range, high output current, and efficient, reliable power for commercial ITE applications.
Category:Power Supplies - Board Mount,DC DC Converters
Mfr:Analog Devices Inc.
Series:µModule®
Packaging:Tray
Part Status:Active
Voltage - Input (Min):4V
Voltage - Input (Max):14V
Applications:ITE (Commercial)
Features:OCP, OTP, OVP
Operating Temperature:-40°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:77-BBGA Module
Size / Dimension:0.59" L x 0.35" W x 0.20" H (15.0mm x 9.0mm x 5.0mm)
Quad-Channel Output:Equipped with four independent output channels, each capable of providing 4A continuous DC current and 5A peak current.Channels can be paralleled to form an array, delivering up to 16A current to meet high-current power supply requirements.
Wide Input Voltage Range:Normally operates with an input voltage range of 4V to 14V; with an external bias power supply, the input voltage can be as low as 2.375V, adapting to various power supply environments and enhancing application flexibility.
Adjustable Output Voltage:The output voltage of each channel is programmable from 0.6V to 5.5V via external resistors, enabling precise voltage regulation to match the power needs of different load components, with a total output voltage regulation accuracy of ±1.5%.
Rapid Transient Response:Adopts current mode control and internal feedback loop compensation, ensuring sufficient stability margin and fast transient response. It is compatible with various output capacitors, including all ceramic output capacitors, effectively suppressing voltage fluctuations caused by load changes.
Comprehensive Protection Mechanisms:Integrates OCP,OTP,and OVP functions. It also has under-voltage lockout protection and short-circuit protection. The foldback current limit reduces inductor current during overload, and the PGOOD output signals abnormal voltage conditions, comprehensively protecting the regulator and loads.
Flexible Control Functions:Supports external frequency synchronization (700kHz to 1.3MHz) to avoid interference with sensitive circuits. It also features output voltage tracking, soft-start programming, and shutdown control, facilitating system power management and reducing standby power consumption.
Compact and Integrated Design:Comes in a 77-BBGA module package with a small footprint. It integrates multiple components internally, reducing the need for external components and PCB space, simplifying circuit design and EMI certification processes.
PLC Systems:Used in programmable logic controllers (PLCs) to supply power to different internal modules. For example, it provides 3.3V power for the CPU module, 5V for digital input/output modules, and appropriate voltages for analog input/output modules, ensuring stable and reliable operation of the PLC system.
Communication Base Stations:Powers baseband processing units (BBUs) and remote radio units (RRUs) in 5G communication base stations. Leveraging its multi-channel output and parallel capability, it provides stable power for circuits with different power requirements, guaranteeing the normal operation of communication signals.
Network Switches: Supplies various voltages (1.2V, 1.8V, 2.5V, 3.3V, etc.) to the main control board, switching chips, and port modules of network switches. It meets the power needs of different internal components, ensuring high-speed data transmission and switching efficiency.
Medical Imaging Equipment: Applied in CT and MRI medical imaging equipment to power detectors, signal processing circuits, and data acquisition circuits. For instance, it provides 5V power for the photoelectric conversion circuit of detectors and 3.3V/1.8V for signal amplification circuits, ensuring accurate image signal collection and processing.
The LTM4644EY#PBF DC/DC converter features an integrated quad-channel design, wide voltage range, flexible control, and comprehensive protection in a compact package, making it a reliable and efficient power solution for commercial ITE applications such as industrial control, communications, and medical equipment.