LT8610
PRODUCTION42V, 2.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current
- Part Models
- 12
- 1ku List Price
- Starting From $5.38
Overview
- Wide Input Voltage Range: 3.4V to 42V
- Ultralow Quiescent Current Burst Mode® Operation:
- 2.5μA IQ Regulating 12VIN to 3.3VOUT
- Output Ripple < 10mVP-P
- High Efficiency Synchronous Operation:
- 96% Efficiency at 1A, 5VOUT from 12VIN
- 94% Efficiency at 1A, 3.3VOUT from 12VIN
- Fast Minimum Switch-On Time: 50ns
- Low Dropout Under All Conditions: 200mV at 1A
- Allows Use Of Small Inductors
- Low EMI
- Adjustable and Synchronizable: 200kHz to 2.2MHz
- Current Mode Operation
- Accurate 1V Enable Pin Threshold
- Internal Compensation
- Output Soft-Start and Tracking
- Small Thermally Enhanced 16-Lead MSOP Package
- AEC-Q100 Qualified for Automotive Applications
The LT8610 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 2.5μA of quiescent current. 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 down to very low output currents while keeping the output ripple below 10mVP-P. 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 VIN undervoltage lockout or to shut down the LT8610 reducing the input supply current to 1μA. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions. The LT8610 is available in a small 16-lead MSOP package with exposed pad for low thermal resistance.
| Feedback Voltage | Min VIN | 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
- Automotive and Industrial Supplies
- General Purpose Step-Down
- GSM Power Supplies
Documentation
Data Sheet 1
User Guide 2
Application Note 1
Design Note 1
Technical Articles 5
Video 1
Brochure 2
Book & eBook 1
Rarely Asked Question 1
Webcast 3
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 |
|---|---|---|---|
| LT8610EMSE#PBF | 16-Lead MSOP w/ EP | ||
| LT8610EMSE#TRPBF | 16-Lead MSOP w/ EP | ||
| LT8610EMSE#WPBF | 16-Lead MSOP w/ EP | ||
| LT8610EMSE#WTRPBF | 16-Lead MSOP w/ EP | ||
| LT8610HMSE#PBF | 16-Lead MSOP w/ EP | ||
| LT8610HMSE#TRPBF | 16-Lead MSOP w/ EP | ||
| LT8610HMSE#WPBF | 16-Lead MSOP w/ EP | ||
| LT8610HMSE#WTRPBF | 16-Lead MSOP w/ EP | ||
| LT8610IMSE#PBF | 16-Lead MSOP w/ EP | ||
| LT8610IMSE#TRPBF | 16-Lead MSOP w/ EP | ||
| LT8610IMSE#WPBF | 16-Lead MSOP w/ EP | ||
| LT8610IMSE#WTRPBF | 16-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT8610EMSE#PBF | PRODUCTION | |
| LT8610EMSE#TRPBF | PRODUCTION | |
| LT8610EMSE#WPBF | PRODUCTION | |
| LT8610EMSE#WTRPBF | PRODUCTION | |
| LT8610HMSE#PBF | PRODUCTION | |
| LT8610HMSE#TRPBF | PRODUCTION | |
| LT8610HMSE#WPBF | PRODUCTION | |
| LT8610HMSE#WTRPBF | PRODUCTION | |
| LT8610IMSE#PBF | PRODUCTION | |
| LT8610IMSE#TRPBF | PRODUCTION | |
| LT8610IMSE#WPBF | PRODUCTION | |
| LT8610IMSE#WTRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT8610EMSE#PBF | PRODUCTION | |
| LT8610EMSE#TRPBF | PRODUCTION | |
| LT8610EMSE#WPBF | PRODUCTION | |
| LT8610EMSE#WTRPBF | PRODUCTION | |
| LT8610HMSE#PBF | PRODUCTION | |
| LT8610HMSE#TRPBF | PRODUCTION | |
| LT8610HMSE#WPBF | PRODUCTION | |
| LT8610HMSE#WTRPBF | PRODUCTION | |
| LT8610IMSE#PBF | PRODUCTION | |
| LT8610IMSE#TRPBF | PRODUCTION | |
| LT8610IMSE#WPBF | PRODUCTION | |
| LT8610IMSE#WTRPBF | PRODUCTION | |
|
Apr 11, 2019 - 19_0067 Notification of Wafer Fab Location Change for 0.35 BCD Process |
||
| LT8610EMSE#PBF | PRODUCTION | |
| LT8610EMSE#TRPBF | PRODUCTION | |
| LT8610HMSE#PBF | PRODUCTION | |
| LT8610HMSE#TRPBF | PRODUCTION | |
| LT8610IMSE#PBF | PRODUCTION | |
| LT8610IMSE#TRPBF | PRODUCTION | |
|
Apr 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LT8610EMSE#WPBF | PRODUCTION | |
| LT8610EMSE#WTRPBF | PRODUCTION | |
| LT8610HMSE#PBF | PRODUCTION | |
| LT8610HMSE#TRPBF | PRODUCTION | |
| LT8610HMSE#WPBF | PRODUCTION | |
| LT8610HMSE#WTRPBF | PRODUCTION | |
| LT8610IMSE#WPBF | PRODUCTION | |
| LT8610IMSE#WTRPBF | PRODUCTION | |
|
Jul 12, 2022 - 22_0157 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM] |
||
| LT8610HMSE#PBF | PRODUCTION | |
| LT8610HMSE#TRPBF | PRODUCTION | |
| LT8610HMSE#WPBF | PRODUCTION | |
| LT8610HMSE#WTRPBF | PRODUCTION | |
| LT8610IMSE#PBF | PRODUCTION | |
| LT8610IMSE#TRPBF | PRODUCTION | |
|
Jun 21, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices |
||
| LT8610HMSE#PBF | PRODUCTION | |
| LT8610HMSE#TRPBF | PRODUCTION | |
| LT8610IMSE#PBF | PRODUCTION | |
| LT8610IMSE#TRPBF | PRODUCTION | |
|
Apr 17, 2025 - 25_0119 Bond Wire Change from Gold to Copper (Automotive) |
||
| LT8610HMSE#WPBF | PRODUCTION | |
| LT8610HMSE#WTRPBF | PRODUCTION | |
| LT8610IMSE#WPBF | PRODUCTION | |
| LT8610IMSE#WTRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
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| Parts | Product Life Cycle | Description |
|---|---|---|
|
LT8610A LT8610AB |
42V, 3.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current |
Tools & Simulations
LTspice 2
- LT8610 Demo Circuit - µPower Synchronous Step-Down Regulator (3.8-42V to 3.3V @ 2.5A)
- LT8610/LT3008-2.5 Demo Circuit - Ultralow Iq 2.5V, 3.3V Step-Down with LDO (3.8-27V to 3.3V @ 2.5A & 2.5 @ 20mA)
Models for the following parts are available in LTspice:
- LT8610
- LT8610A
- LT8610AB
- LT8610AC
LTpowerCAD 1
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.
Evaluation Kits
LT8610 Demo Board | Synchronous Step-Down Converter: 3.4V to 42V Input, 5VOUT at 2.5A