LT8622S
RECOMMENDED FOR NEW DESIGNS18V, 2A Step-Down Silent Switcher 3 with Ultralow Noise Reference
- Part Models
- 2
- 1ku List Price
- Starting From $3.58
Overview
- Silent Switcher®3 Architecture
- Ultralow RMS Noise (10Hz to 100kHz): 4μVRMS
- Ultralow Spot Noise: 4nV/√Hz at 10kHz
- Ultralow EMI Emissions on Any PCB
- Internal Bypass Capacitors Reduce Radiated EMI
- High Efficiency at High Frequency
- Ultrafast Transient Response: 1μs
- Fast Minimum Switch On-Time: 12ns
- Input Voltage Range: 2.7V to 18V
- Output Voltage Range: 0V to (PVIN - 0.5V)
- 2A/4A Maximum Continuous Output Current
- Precision Reference: ± 0.8% Over Temperature with Remote Sense
- PolyPhase® Operation: Up to 12 Phases
- Forced Continuous Mode Capability
- Adjustable and Synchronizable: 300kHz to 6MHz
- Programmable Power Good
- Small 20-Lead 4mm × 3mm LQFN Package
The LT8622S/LT8624S synchronous step-down regulator features third-generation Silent Switcher technology, which is uniquely designed to combine an ultralow noise reference with Silent Switcher architecture in order to achieve both high efficiency and excellent wideband noise performance.
The innovative ultralow-noise architecture provides exceptional low-frequency (0.1Hz to 100kHz) output noise performance in a switching regulator. The output voltage can be programmed with a single resistor, resulting in virtually constant output noise independent of output voltage. Silent Switcher architecture minimizes EMI emissions while delivering high efficiency at high switching frequencies.
The LT8622S/LT8624S is ideal for high-current, noise- sensitive applications that benefit from the high efficiency of a synchronous switching regulator.
Applications
- RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs
- High Speed/High Precision ADCs/DACs
- Low Noise Instrumentation
Documentation
Data Sheet 1
Technical Articles 2
Book & eBook 1
Brochure 1
Webcast 2
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 |
|---|---|---|---|
| LT8622SAV#PBF | 20-Lead LQFN (4mm x 3mm x 0.94mm) | ||
| LT8622SAV#TRPBF | 20-Lead LQFN (4mm x 3mm x 0.94mm) |
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:
- LT8622S
LTpowerCAD
Design tools for the following parts are available in LTpowerCAD:
- LT8622S
- LT8622S(INVERTING)
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
18V, 2A Step-Down Silent Switcher with Low Noise Reference
Resources
Reference Designs
Altera FPGA
Part Used
Videos
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