Power Management
Switching Regulator
Step-Down (Buck) Regulators
Micropower Buck
Power Management
Switching Regulator
Step-Down (Buck) Regulators
Internal Power Switch Buck
Power Management
Switching Regulator
Step-Down (Buck) Regulators
High Input Voltage Buck
LT8610 - 42V, 2.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current
Features
- 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
Typical Application
Description
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 cur- rent 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.Packaging
For complete and up to date package information and drawings, please refer to our packaging page
MS-16
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LT8610EMSE#PBF | MSOP | 16 | E | $5.07 | $3.55 | View |
| LT8610EMSE#TRPBF | MSOP | 16 | E | $3.61 | View | |
| LT8610IMSE#PBF | MSOP | 16 | I | $5.59 | $3.91 | View |
| LT8610IMSE#TRPBF | MSOP | 16 | I | $3.97 | View | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1749A | LT8610 Demo Board I Synchronous Step-Down Converter: 3.4V to 42V Input, 3.3VOUT at 2.5A | $125.00 | |
| Buy Now | |||
Applications
- Automotive and Industrial Supplies
- General Purpose Step-Down
- GSM Power Supplies
People Who Viewed This Product Also Viewed
- LT8611 - 42V, 2.5A Synchronous Step-Down Regulator with Current Sense and 2.5μA Quiescent Current
- LTC3115-1 - 40V, 2A Synchronous Buck-Boost DC/DC Converter
- LTC3630 - High Efficiency, 65V 500mA Synchronous Step-Down Converter
- LTM4620 - Dual 13A or Single 26A DC/DC µModule Regulator
- LTC4370 - Two-Supply Diode-OR Current Balancing Controller
- LT3791 - 60V 4-Switch Synchronous Buck-Boost LED Driver Controller
- LTC4364 - Surge Stopper with Ideal Diode
- LT3504 - Quad 40V/1A Step-Down Switching Regulator with 100% Duty Cycle Operation
- LT8300 - 100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch
- LTC3789 - High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
Product Notifications
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.
Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.
Simulate
LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.
To launch a ready to run LTspice demonstration circuit for this part:
- Step 1: If you have not installed LTspice on this computer, download and install LTspice IV
- Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
- Step 3: If LTspice IV does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As". After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu
To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.
Related models available in LTspice IV
LT8610
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
