LT8570
RECOMMENDED FOR NEW DESIGNSBoost/SEPIC/Inverting DC/DC Converter with 65V Switch, Soft-Start and Synchronization
- Part Models
- 24
- 1ku List Price
- Starting From $3.45
Overview
- 65V Power Switch
- Current Limit Options of 0.5A (LT8570) or 0.25A (LT8570-1)
- Adjustable Switching Frequency
- Single Feedback Resistor Sets VOUT
- Synchronizable to External Clock
- High Gain SHDN Pin Accepts Slowly Varying Input Signals
- Wide Input Voltage Range: 2.55V to 40V
- Low VCESAT Switch
- Integrated Soft-Start Function
- Easily Configurable as a Boost, SEPIC, or Inverting Converter
- User Configurable Undervoltage Lockout (UVLO)
- Pin Compatible with LT3580 and LT8580
- Tiny Thermally Enhanced 8-Lead 3mm × 3mm DFN and 8-Lead MSOP Packages
The LT8570 and LT8570-1 are PWM DC/DC converters. The LT8570 contains a 0.5A, 65V power switch, while the LT8570-1 contains a 0.25A, 65V power switch. The LT8570 and LT8570-1 can be configured as either a boost, SEPIC or inverting converter.
The LT8570/LT8570-1 have an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT8570/LT8570-1 can be synchronized to an external clock. The switching frequency of the part may be free running or synchronized, and can be set between 200kHz and 1.5MHz.
The LT8570/LT8570-1 also feature innovative SHDN pin circuitry that allows for slowly varying input signals and an adjustable undervoltage lockout function.
Additional features such as frequency foldback and softstart are integrated. The LT8570/LT8570-1 are available in tiny thermally enhanced 3mm × 3mm 8-lead DFN and 8-lead MSOP packages.
Applications
- VFD Bias Supplies
- TFT-LCD Bias Supplies
- GPS Receivers
- DSL Modems
- Local Power Supply
Documentation
Data Sheet 1
User Guide 1
Technical Articles 2
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 Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT8570EMS8E#PBF | PRODUCTION | |
| LT8570EMS8E#TRPBF | PRODUCTION | |
| LT8570EMS8E-1#PBF | PRODUCTION | |
| LT8570EMS8E-1#TRPBF | PRODUCTION | |
| LT8570HMS8E#PBF | PRODUCTION | |
| LT8570HMS8E#TRPBF | PRODUCTION | |
| LT8570HMS8E-1#PBF | PRODUCTION | |
| LT8570HMS8E-1#TRPBF | PRODUCTION | |
| LT8570IMS8E#PBF | PRODUCTION | |
| LT8570IMS8E#TRPBF | PRODUCTION | |
| LT8570IMS8E-1#PBF | PRODUCTION | |
| LT8570IMS8E-1#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT8570EMS8E#PBF | PRODUCTION | |
| LT8570EMS8E#TRPBF | PRODUCTION | |
| LT8570EMS8E-1#PBF | PRODUCTION | |
| LT8570EMS8E-1#TRPBF | PRODUCTION | |
| LT8570HMS8E#PBF | PRODUCTION | |
| LT8570HMS8E-1#PBF | PRODUCTION | |
| LT8570IMS8E#PBF | PRODUCTION | |
| LT8570IMS8E#TRPBF | PRODUCTION | |
| LT8570IMS8E-1#PBF | PRODUCTION | |
| LT8570IMS8E-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/SoftwareHardware Ecosystem
Tools & Simulations
LTspice 2
- LT8570-1 Demo Circuit - Boost Converter (5-10V to 12V @ 60mA)
- LT8570 Demo Circuit - Boost Converter (5V-10V to 12V @ 125mA)
Models for the following parts are available in LTspice:
- LT8570
- LT8570-1
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LT8570
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.