LT8610AX

RECOMMENDED FOR NEW DESIGNS

42V, 3.5A Synchronous Step-Down Regulator with Operation to 175°C

Data Sheet Product Selection Table

Part Models: 2
1ku List Price: Starting From $147.20

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Overview

100% Tested at 175°C
±2% Reference Accuracy Over –40°C to 175°C Range
Wide Input Voltage Range: 3.7V to 42V
Ultralow Quiescent Current Burst Mode^® Operation
High Efficiency Synchronous Operation:

91% Eff. at 0.5A, at 175°C, 3.3V_OUT from 12V_IN
92% Eff. at 0.5A, at 175°C, 5V_OUT from 12V_IN

Adjustable and Synchronizable Frequency: 200kHz to 2.2MHz
No Thermal Shutdown
Internal Compensation
Output Soft-Start and Tracking
Power Good Flag
Small Thermally-Enhanced 16-Lead MSOP Package

The LT8610AX is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator rated to 175°C junction temperature. The LT8610AX is 100% tested a 175°C. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency across a wide range of output currents while keeping the output ripple low. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program V_IN undervoltage lockout or to shut down the LT8610AX. A capacitor on the TR/SS pin programs the output voltage ramp rate during startup while the PG flag signals when V_OUT is within ±9% of the programmed output voltage as well as fault conditions. The LT8610AX is available in small 16-lead MSOP package with exposed pad for low thermal resistance.


	Feedback Voltage	Min V_IN	Output Current	Notes
LT8610AC-1	0.80V	3.0V	3.5A	Fsw = 1.5MHz to 2.2MHz, Optimized Transient Response
LT8610AC	0.80V	3.0V	3.5A	Fsw = 200kHz to 2.2MHz
LT8610AB	0.97V	3.4V	3.5A	Improved Burst Mode Efficiency
LT8610AX	0.97V	3.4V	3.5A	175°C Max Junction Temp
LT8610A	0.97V	3.4V	3.5A	Higher Iout, 30ns Min On Time
LT8610	0.97V	3.4V	2.5A	-

Applications

Oil and Gas Exploration

Part Models: 2
1ku List Price: Starting From $147.20

Documentation

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
LT8610AXMSE#PBF	16-Lead MSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8610AXMSE#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT8610AXMSE#PBF	PRODUCTION
LT8610AXMSE#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0132_Form Material_Report
LT8610AXMSE#PBF	PRODUCTION
LT8610AXMSE#TRPBF	PRODUCTION
Apr 11, 2019 - 19_0067 Notification of Wafer Fab Location Change for 0.35 BCD Process
		PCN19_0067_Form Material_Report Delta Qualification Matrix Qualification Results Summary Detailed Parts List Other
LT8610AXMSE#PBF	PRODUCTION
LT8610AXMSE#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
LT8610A LT8610AB		42V, 3.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT8610
LT8610A
LT8610AB
LT8610AC

LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:

LT8610
LT8610A
LT8610AB

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.

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