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LTM4650 Datasheet(PDF) 1 Page - Analog Devices |
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LTM4650 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 38 page  Data Sheet LTM4640 20VIN, 20A Step-Down DC-to-DC µModule Regulator Rev. 0 DOCUMENT FEEDBACK TECHNICAL SUPPORT One Analog Wa y, Wilmington, MA 01887 - 2356, U.S.A. T el: 781.329.4700 © 2024 Analog D evic es, Inc. Al l rig hts r eser ved. FEATURES Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB) Wide Input Voltage Range: 3.1V to 20V 0.6V to 3.3V Output Voltage Up to 20A DC output current ±1.5% Maximum Total DC Output Voltage Error Differential Remote Sensing Amplifier Fast Transient Response External Frequency Synchronization Multiphase Parallel Current Sharing with up to 4 × LTM4640s Power Good Indicator Overvoltage and Overtemperature Protection 49-Pin, 6.25mm × 6.25mm × 5.07mm, BGA package Pin compatible with LTM4626, LTM4638, and LTM4657 APPLICATIONS Telecom, Datacom, Networking, and Industrial Equipment Medical Diagnostic Equipment Data Storage Rack Units and Cards Test and Debug Systems GENERAL DESCRIPTION The LTM4640 is a complete 20A step-down switching mode power µModule® (micromodule) regulator in a tiny 6.25mm × 6.25mm × 5.07mm BGA package. The package includes the switching controller, the power MOSFETs, an inductor, and the supporting components. Operating over an input voltage range of 3.1V to 20V, the LTM4640 supports an output voltage range of 0.6V to 3.3V, set by a single external resistor. Its high-efficiency design delivers up to 20A continuous output current. Only bulk input and output capacitors are needed. The LTM4640 supports selectable discontinuous- conduction mode (DCM) operation and output voltage tracking for supply rail sequencing. Its high switching frequency and controlled on-time valley current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. Fault protection features include overvoltage and overtemperature protection. The LTM4640 is available with a RoHS-compliant terminal finish. TYPICAL APPLICATION Figure 1. 20A, 1VOUT DC-to-DC Step-Down µModule Regulator Figure 2. 1VOUT Efficiency vs. Load Current 15kΩ 2 × 22µF 25V VIN 3.1V TO 20V VOUT 1.0V, 20A 4 × 100µF 6.3V 0.1µF VIN RUN INTVCC MODE/CLKIN COMPa COMPb VOUT VOSNS+ FB GND LTM4640 VOSNS– PINS NOT USED IN THIS CIRCUIT: CLKOUT, FREQ, PGOOD, PHMODE TRACK/SS VIN = 5V, 600kHz VIN = 12V, 600kHz LOAD CURRENT (A) 0 2 4 6 8 10 12 14 16 18 20 70 75 80 85 90 95 |
Número de pieza similar - LTM4650 |
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Descripción similar - LTM4650 |
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