LT8610AC
LT8610AC-1

PRODUCTION

42V, 3.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current

Data Sheet (Rev. B) Product Selection Table

Part Models: 24
1ku List Price: Starting From $5.67

Viewing:

Overview

LT8610 Feature Set, Plus:
- 3V Minimum Input Voltage
- 800mV Feedback Voltage
- 3.5A Maximum Output Current
- Fast 30ns Minimum Switch-On Time
- Improved Burst Mode Efficiency
- Improved EMI
Wide Input Voltage Range: 3V to 42V
Ultralow Quiescent Current Burst Mode^® Operation:
- 2.5μA I_Q Regulating 12V_IN to 3.3V_OUT
Low Dropout Under All Conditions: 200mV at 1A

High Efficiency Synchronous Operation:
- 95% Efficiency at 1A, 5V_OUT from 12V_IN
- 93% Efficiency at 1A, 3.3V_OUT from 12V_IN
Safely Tolerates Inductor Saturation in Overload
Adjustable and Synchronizable Frequency:
- LT8610AC: 200kHz to 2.2MHz
- LT8610AC-1: 1.5MHz to 2.2MHz
Accurate 1.015V Enable Pin Threshold
Output Soft-Start and Tracking
Small Thermally Enhanced 16-Lead MSOP Package
AEC-Q100 Qualified for Automotive Applications

The LT8610AC/LT8610AC-1 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 2.5μA of quiescent current. Compared to the LT8610AB, the LT8610AC/LT8610AC-1 has a lower feedback voltage of 800mV and a lower minimum V_IN of 3V. The LT8610AC/LT8610AC-1 has the same additional features of the LT8610AB as compared to the LT8610: higher maximum output current of 3.5A, faster minimum on time of 30ns, and higher light load efficiency.

The LT8610AC/LT8610AC-1 has a SYNC pin for synchronization to an external clock. A capacitor on the TR/SS pin programs the output voltage ramp rate during startup. The PG flag signals when V_OUT is within ±8% of the programmed output voltage as well as fault conditions. The LT8610AC-1 has internal compensation optimized for high switching frequencies resulting in improved transient response compared to the LT8610AC. The LT8610AC-1 also has a feature which will soft-start the part when exiting dropout or brownout conditions reducing output voltage overshoot.


	Feedback Voltage	Min V_IN	Output Current	Notes
LT8610AC-1	0.80V	3.0V	3.5A	F_SW = 1.5MHz to 2.2MHz, Optimized Transient Response
LT8610AC	0.80V	3.0V	3.5A	F_SW = 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 I_OUT, 30ns Min On Time
LT8610	0.97V	3.4V	2.5A	-

Applications

Automotive and Industrial Supplies
GSM Power Supplies

Part Models: 24
1ku List Price: Starting From $5.67

Documentation

Data Sheet 1

LT8610AC/LT8610AC-1: 42V, 3.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current Data Sheet (Rev.B) 05/04/2015

Technical Articles 1

95% Efficient at 2MHz 42V Synchronous Buck 06/24/2016

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
LT8610ACEMSE#PBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACEMSE#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACEMSE#WPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACEMSE#WTRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACEMSE-1#PBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACEMSE-1#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACEMSE-1#WPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACEMSE-1#WTRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACHMSE#PBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACHMSE#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACHMSE#WPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACHMSE#WTRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACHMSE-1#PBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACHMSE-1#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACHMSE-1#WPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACHMSE-1#WTRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACIMSE#PBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACIMSE#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACIMSE#WPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACIMSE#WTRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACIMSE-1#PBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACIMSE-1#TRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACIMSE-1#WPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LT8610ACIMSE-1#WTRPBF	16-Lead MSOP w/ EP	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 9, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report
LT8610ACEMSE#PBF	PRODUCTION
LT8610ACEMSE#TRPBF	PRODUCTION
LT8610ACIMSE#PBF	PRODUCTION
LT8610ACIMSE#TRPBF	PRODUCTION
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report
LT8610ACEMSE#PBF	PRODUCTION
LT8610ACEMSE#TRPBF	PRODUCTION
LT8610ACEMSE#WPBF	PRODUCTION
LT8610ACEMSE#WTRPBF	PRODUCTION
LT8610ACEMSE-1#PBF	PRODUCTION
LT8610ACEMSE-1#TRPBF	PRODUCTION
LT8610ACEMSE-1#WPBF	PRODUCTION
LT8610ACEMSE-1#WTRPBF	PRODUCTION
LT8610ACHMSE#PBF	PRODUCTION
LT8610ACHMSE#TRPBF	PRODUCTION
LT8610ACHMSE#WPBF	PRODUCTION
LT8610ACHMSE#WTRPBF	PRODUCTION
LT8610ACHMSE-1#PBF	PRODUCTION
LT8610ACHMSE-1#TRPBF	PRODUCTION
LT8610ACHMSE-1#WPBF	PRODUCTION
LT8610ACHMSE-1#WTRPBF	PRODUCTION
LT8610ACIMSE#PBF	PRODUCTION
LT8610ACIMSE#TRPBF	PRODUCTION
LT8610ACIMSE#WPBF	PRODUCTION
LT8610ACIMSE#WTRPBF	PRODUCTION
LT8610ACIMSE-1#PBF	PRODUCTION
LT8610ACIMSE-1#TRPBF	PRODUCTION
LT8610ACIMSE-1#WPBF	PRODUCTION
LT8610ACIMSE-1#WTRPBF	PRODUCTION
Jul 12, 2022 - 22_0157 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM]
		PCN22_0157_Form Material_Report Detailed Parts List
LT8610ACEMSE#PBF	PRODUCTION
LT8610ACEMSE#TRPBF	PRODUCTION
LT8610ACHMSE#WPBF	PRODUCTION
LT8610ACHMSE#WTRPBF	PRODUCTION
Jun 21, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report
LT8610ACEMSE#PBF	PRODUCTION
LT8610ACEMSE#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
LT8610ACEMSE#PBF	PRODUCTION
LT8610ACEMSE#TRPBF	PRODUCTION
LT8610ACEMSE-1#PBF	PRODUCTION
LT8610ACEMSE-1#TRPBF	PRODUCTION
LT8610ACEMSE-1#WPBF	PRODUCTION
LT8610ACEMSE-1#WTRPBF	PRODUCTION
LT8610ACHMSE#PBF	PRODUCTION
LT8610ACHMSE#TRPBF	PRODUCTION
LT8610ACHMSE-1#PBF	PRODUCTION
LT8610ACHMSE-1#TRPBF	PRODUCTION
LT8610ACHMSE-1#WPBF	PRODUCTION
LT8610ACHMSE-1#WTRPBF	PRODUCTION
LT8610ACIMSE#PBF	PRODUCTION
LT8610ACIMSE#TRPBF	PRODUCTION
LT8610ACIMSE-1#PBF	PRODUCTION
LT8610ACIMSE-1#TRPBF	PRODUCTION
LT8610ACIMSE-1#WPBF	PRODUCTION
LT8610ACIMSE-1#WTRPBF	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
LT8610ACEMSE#PBF	PRODUCTION
LT8610ACEMSE#TRPBF	PRODUCTION
LT8610ACEMSE-1#PBF	PRODUCTION
LT8610ACEMSE-1#TRPBF	PRODUCTION
LT8610ACHMSE#PBF	PRODUCTION
LT8610ACHMSE#TRPBF	PRODUCTION
LT8610ACHMSE-1#PBF	PRODUCTION
LT8610ACHMSE-1#TRPBF	PRODUCTION
LT8610ACIMSE#PBF	PRODUCTION
LT8610ACIMSE#TRPBF	PRODUCTION
LT8610ACIMSE-1#PBF	PRODUCTION
LT8610ACIMSE-1#TRPBF	PRODUCTION
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report
LT8610ACEMSE-1#PBF	PRODUCTION
LT8610ACEMSE-1#TRPBF	PRODUCTION
LT8610ACHMSE#PBF	PRODUCTION
LT8610ACHMSE#TRPBF	PRODUCTION
LT8610ACIMSE-1#PBF	PRODUCTION
LT8610ACIMSE-1#TRPBF	PRODUCTION

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

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Hot Swap Controllers 1
LTC4364	RECOMMENDED FOR NEW DESIGNS	Surge Stopper with Ideal Diode

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

Tools & Simulations

LTspice 1

LT8610AC Demo Circuit - 5V 3.5A 2MHz Step-Down Converter (5.5-42V to 5V @ 3.5A)

Models for the following parts are available in LTspice:

LT8610
LT8610A
LT8610AB
LT8610AC

LTpowerCAD 2

Design tools for the following parts are available in LTpowerCAD:

LT8610
LT8610A
LT8610AB
LT8610AC
LT8610AC-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.

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.

Latest Discussions

1 Years Ago

3 Years Ago