Datasheet Analog Devices LT8625S

Manufacturer	Analog Devices
Series	LT8625S

18V/8A Step-Down Silent Switcher 3 with Ultralow Noise Reference

Datasheets

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PDF, 4.9 Mb, Language: en, File published: Apr 20, 2023, Pages: 39
18V/8A Step-Down Silent Switcher 3 with Ultralow Noise Reference

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Detailed Description

The LT8625S 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 LT8625S is ideal for high current, noise sensitive applications which benefit from the high efficiency of a synchronous switching regulator.

Applications

RF Power Suppliers: PLLs, VCOs, Mixers, LNAs, PAs
High Speed/High Precision ADCs/DACs
Low Noise Instrumentation

Documentation

Data Sheet 1

LT8625S: 18V/8A Step-Down Silent Switcher 3 with Ultralow Noise Reference Data Sheet (Rev.B) 04/20/2023

Technical Articles 2

Fast-Transient Negative Voltage Rail for Noise-Sensitive Applications 07/30/2024

Benefits of Ultralow Noise Switching Regulator in Noise-Sensitive RF Applications 06/03/2024

Informational 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
LT8625SIV#TRMPBF	20-Lead LQFN (4mm x 3mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8625SIV#TRPBF	20-Lead LQFN (4mm x 3mm x 0.94mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT8625S
LT8625SP
LT8625SP-1

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

LT8625S | 18V, 8A Synchronous Step-Down Silent Switcher with Low Noise Reference

	LT8625SIV#TRMPBF	LT8625SIV#TRPBF
N	1	2
Package	20-Lead LQFN (4mm X 3mm X 0.94mm)	20-Lead LQFN (4mm X 3mm X 0.94mm)
Pins	20	20

Parametrics

Parameters / Models	LT8625SIV#TRMPBF	LT8625SIV#TRPBF
Operating Temperature Range, °C	-40 To 125	-40 To 125
Packing Option	Reel	Reel
Product Status	Production	Production
RoHS	Yes	Yes

Model Line

Series: LT8625S (2)

LT8625SIV#TRMPBF LT8625SIV#TRPBF

Manufacturer's Classification

Power Management > Ultralow Noise Regulators

Slices

Microcontrollers