LTM4740
RECOMMENDED FOR NEW DESIGNS15VIN, Single 15A Step-Down μModule Regulator with PMBus
- Part Models
- 2
- 1ku List Price
- Starting From $17.01
Overview
- Complete Solution in <1cm2 (Single-Sided PCB) or 0.5cm2 (Dual-Sided PCB)
- PMBus Telemetry of Output Current, Output Voltage, Input Voltage, and Junction Temperature
- Pin-to-Pin Compatible with LTM4739
- Input Voltage Range: 3V to 15V
- Output Voltage Range: 0.4V to 5.5V
- Adjustable Reference Voltage: 0.4V to 0.8V (Default 0.5V)
- 90% Full-Load Efficiency from 12VIN to 1.5VOUT at 15A
- ±1% Maximum DC Output Error Over Temperature
- Wide Frequency Range: 500kHz to 2MHz
- Internal Compensation
- Power Good Indicator
- Constant Frequency Peak Current Mode Control
- Differential Remote Sense
- Single-Phase Point-of-Load Operation
- 49-Lead 6.25mm × 6.25mm × 5.07mm BGA Package
The LTM4740 is a complete 15A step-down switchingmode power μModule® (micromodule) regulator with a PMBus interface in a tiny 6.25mm × 6.25mm × 5.07mm Ball Grid Array (BGA) package. The package includes the switching controller, the power MOSFETs, an inductor, and the supporting components. Operating over an input voltage range of 3V to 15V, the LTM4740 supports an output voltage range of 0.4V to 5.5V. Its highefficiency design delivers up to 15A of continuous output current. Only bulk input and output capacitors are needed. The switching frequency of the LTM4740 can be configured from 500kHz to 2MHz to provide the capability of optimizing the design in terms of size and performance. Pin-compatible with LTM4739, which is a 10A μModule regulator with PMBus. Therefore, one layout could fit different power-level requests with flexibility. The LTM4740 has an optional BIAS input pin, allowing connection from a 2.8V to 5.5V bias input supply for optimized efficiency. Operation settings and configurable features can be selected by connecting two pin-strap resistors from the PGMn pins to ground and then adjusted using PMBus commands. The LTM4740 has multiple protections, including positive and negative overcurrent (POC/NOC), output overvoltage (OV), and overtemperature (OT) to ensure a robust design. It is available with a RoHS-compliant terminal finish.
APPLICATIONS
- Data Center Power, Servers, and Storage
- Telecom, Networking, and Industrial Equipment
- Point-of-Load (POL) Voltage Regulators
Documentation
Data Sheet 1
User Guide 2
Product Selector Card 1
Brochure 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 |
|---|---|---|---|
| LTM4740EY#PBF | 49-Ball Chip Scale Package Ball Grid Array [CSP_BGA] | ||
| LTM4740IY#PBF | 49-Ball Chip Scale Package Ball Grid Array [CSP_BGA] |
Software Resources
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LTspice 1
Models for the following parts are available in LTspice:
- LTM4740
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
LTM4740: 15VIN, Single 15A Step-Down μModule Regulator with PMBus