Features and Benefits
- 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 with High Gain Error Amplifier
- Input Voltage Range: 2.8V to 18V
- Output Voltage Range: 0V to (PVIN - 0.5V)
- 16A Maximum Continuous Output Current
- Fast Minimum Switch On-Time: 15ns
- Precision Current Reference: 100μA ± 0.8% Over Temperature with Remote Sense
- PolyPhase® Operation: Up to 12 Phases
- Forced Continuous Mode Capability
- Adjustable and Synchronizable: 300kHz to 4MHz
- Programmable Power Good
- 24-Lead 4mm × 4mm LQFN Exposed Back Package for Optional Heat Sink Mount
The LT8627SP 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, providing unity-gain operation over the output range, 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 top of the package features exposed die for optional heat sink attachment which can be used to significantly improve thermal performance.
The LT8627SP is ideal for high current, noise sensitive applications which benefit from the high efficiency of a synchronous switching regulator.
Note: The LT8627SP is pin-to-pin compatible with the LT8625SP-1.
- RF Power Suppliers: PLLs, VCOs, Mixers, LNAs, PAs
- High Speed/High Precision ADCs/DACs
- Low Noise Instrumentation
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Demonstration circuit 3147A is a 18V, 16A synchronous step-down Silent Switcher 3 with ultralow noise, high efficiency and power density featuring the LT8627SP. The input voltage range of DC3147A is 2.7V to 18V. The default demo board setting is 1.0V at 16A maximum DC output current. The LT8627SP is a compact, ultralow noise, ultralow emission, high efficiency, and high speed synchronous monolithic step-down switching regulator. The uniquely designed combination of the ultralow noise reference and the third-generation Silent Switcher architecture enables the LT8627SP to achieve both high efficiency and excellent wideband noise performance. Minimum on-time of 16ns allows high VIN to low VOUT conversion at high frequency.
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). Please send your project details, company information and contact by e-mail to BUC_Doc_Request@analog.com. Additional support is available from your Analog Devices local sales.
Documentation & Resources
How to Achieve Ultrafast Power Supply Transient Response for RF Applications7/1/2022 Analog Dialogue
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.