LT8710 - Synchronous SEPIC/ Inverting/Boost Controller with Output Current Control
Features
- Wide Input Range: 4.5V to 80V
- Rail-to-Rail Output Current Monitor and Control
- Input Voltage Regulation for High Impedance Inputs
- C/10 or Power Good Indication Pin
- MODE Pin for Forced CCM or Pulse-Skipping Operation
- Switching Frequency Up to 750kHz
- Easily Configurable as a Boost, SEPIC, Inverting or Flyback Converter with Single Feedback Pin
- Can Be Synchronized to External Clock
- High Gain EN/FBIN Pin Accepts Slowly Varying Input Signals
- 20-Lead TSSOP Package
Typical Application
Description
The LT®8710 is a synchronous PWM DC/DC controller with a rail-to-rail output current monitor and control. The LT8710 is ideal for many types of power supply topologies and can be easily configured for boost, SEPIC, inverting, or flyback configurations.
The LT8710’s rail-to-rail output current monitor and control allows the part to be configured in current limited applications such as battery charging. The FLAG pin can be used as a power good indication or C/10 indication allowing for accurate bulk and float battery voltages.
The LT8710’s switching frequency range can be set between 100kHz and 750kHz using an external resistor or synchronized to an external clock.
The LT8710 also features innovative EN/FBIN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function. The pin is also used for input voltage regulation to avoid collapsing a high impedance input supply. Additional features such as frequency foldback and soft-start are integrated. The LT8710 is available in a 20-lead TSSOP package.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT8710EFE#PBF | TSSOP-20 | FE | E | 05-08-1663 (CB) | Yes |
| LT8710EFE#TRPBF | TSSOP-20 | FE | E | 05-08-1663 (CB) | Yes |
| LT8710IFE#PBF | TSSOP-20 | FE | I | 05-08-1663 (CB) | Yes |
| LT8710IFE#TRPBF | TSSOP-20 | FE | I | 05-08-1663 (CB) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- 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 | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT8710EFE#PBF | TSSOP-20 | E | $4.87 | $3.41 | Yes | |
| LT8710EFE#TRPBF | TSSOP-20 | E | $3.47 | Yes | ||
| LT8710IFE#PBF | TSSOP-20 | I | $5.22 | $3.65 | Yes | |
| LT8710IFE#TRPBF | TSSOP-20 | I | $3.71 | Yes | ||
| 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 |
|---|---|---|---|
| DC2067A | LT8710EFE Inverting Demo Board | 4.5V ≤ VIN ≤ 28V; VOUT: -5V @ 6A | $150.00 | |
| Buy Now | |||
Applications
- High Power Local Power Supply
- Wide Input Voltage Range SEPIC/Inverting
- Lead Acid Battery Charger
- Automotive Engine Control Unit (ECU) Power
- Solar Panel Power Converter
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
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
- Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
- Step 3: If LTspice 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.
Models for the following parts are available in LTspice:
LT8710
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.
