LTM4640
RECOMMENDED FOR NEW DESIGNS20VIN, 20A Step-Down DC-to-DC μModule Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $17.40
Overview
- 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
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 discontinuousconduction 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.
APPLICATIONS
- Telecom, Datacom, Networking, and Industrial Equipment
- Medical Diagnostic Equipment
- Data Storage Rack Units and Cards
- Test and Debug Systems
Documentation
Data Sheet 1
User Guide 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTM4640EY#PBF | 49-Ball Chip Scale Package Ball Grid Array [CSP_BGA] | ||
| LTM4640IY#PBF | 49-Ball Chip Scale Package Ball Grid Array [CSP_BGA] |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTM4640
LTpowerCAD
Design tools for the following parts are available in LTpowerCAD:
- LTM4640
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
LTM4640 |20VIN, 20A Step-Down μModule Regulator