LTM4732
RECOMMENDED FOR NEW DESIGNS16VIN, 4A Ultralow Noise Silent Switcher 3 μModule Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $7.56
Overview
- Complete solution in <1cm2 (single-sided PCB) or 0.5cm2 (dual-sided PCB)
- Low-noise Silent Switcher®3 architecture
- Ultralow EMI emissions
- Ultralow RMS noise (10Hz to 100kHz): 4μVRMS
- ±1.5% maximum total DC output voltage error over line, load, and temperature
- Input voltage range: 3V to 16V
- Output voltage range: 0.3V to 6V
- 4A maximum continuous output current
- Adjustable and synchronizable: 400kHz to 4MHz
- Current mode control, fast transient response
- Forced continuous mode capability
- Multiphase parallel with current sharing
- Programmable power good
- Available in a tiny 28-Pin 6.25mm × 4mm × 1.92mm BGA package
The LTM4732 is a complete 4A step-down Silent Switcher 3 power μModule® (micromodule) regulator in a tiny 6.25mm × 4mm × 1.92mm 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 16V, the LTM4732 supports an output range of 0.3V to 6V. A single resistor sets the output voltage, enabling unity-gain operation over the output range and resulting in virtually constant output noise independent of the output voltage. Only the bulk input and output capacitors are required to complete the design.
The LTM4732 employs the Silent Switcher 3 architecture with internal hot loop bypass capacitors to achieve low electromagnetic interference (EMI) and high efficiency. Additionally, the LTM4732 has an ultralow noise architecture to obtain exceptional low-frequency (<100kHz) output noise. The low electromagnetic interference (EMI) and the low-noise features make the LTM4732 ideal for noise-sensitive applications with a high-efficiency synchronous switching regulator. The LTM4732 is available with a RoHS-compliant terminal finish.
APPLICATIONS
- Telecom, networking, and industrial equipment
- RF power supplies: PLLs, VCOs, mixers, LNAs, PAs
- Low-noise instrumentation
- High speed/high precision data converters
Documentation
Data Sheet 1
User Guide 1
Technical Articles 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 |
|---|---|---|---|
| LTM4732EY#PBF | CSP_BGA | ||
| LTM4732IY#PBF | CSP_BGA |
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTM4732
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LTM4732
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.
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Evaluation Kits
LTM4732: 16V, 4A Ultralow Noise Silent Switcher 3 μModule Regulator