LT8338
RECOMMENDED FOR NEW DESIGNS40V, 1.2A Micropower Synchronous Boost Converter with PassThru
- Part Models
- 4
- 1ku List Price
- Starting From $2.92
Overview
- Wide Input Voltage Range: 3.0V to 40V
- Low Quiescent Current in Burst Mode® Operation
- <6μA IQ
- <20mVP-P Output Ripple
- Synchronous Operation for High Efficiency
- Monolithic 40V, 240mΩ Power Switches
- 100% Duty Cycle PassThru™ Mode for Boost Preregulation Applications
- Adjustable and Synchronizable: 300kHz to 3MHz
- Spread Spectrum for Reduced EMI/EMC Emissions
- Accurate EN/UVLO
- Internal Compensation
- 20MΩ Internal Feedback Divider
- Output Voltage Up to 40V
- Available in 10-Lead MSOP Package
The LT8338 is a synchronous monolithic step-up regulator that provides high efficiency for input and output up to 40V. It consumes only 6μA quiescent current at Burst Mode operation to maintain high efficiency at very low output current, while keeping the output ripple below 20mVP-P. The LT8338 switching frequency can be set with an external resistor over the range of 300kHz to 3MHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between Burst Mode operation and pulse-skipping mode, or to enable spread spectrum modulation to reduce EMI. The EN/UVLO pin has an accurate 1V threshold and can be used to program VIN UVLO or to shut down the part. The LT8338 enters 100% duty cycle PassThru mode when VIN is higher than the regulated VOUT. The LT8338 also features frequency foldback and internal soft-start for inductor current control during start-up.
APPLICATIONS
- Industrial Power Supplies
- Battery-Powered Systems
- General Purpose Step-Up
Documentation
Data Sheet 1
User Guide 1
Brochure 1
Webcast 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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT8338EMSE#PBF | 10-Lead MSOP w/ EP | ||
| LT8338EMSE#TRPBF | 10-Lead MSOP w/ EP | ||
| LT8338JMSE#PBF | 10-Lead MSOP w/ EP | ||
| LT8338JMSE#TRPBF | 10-Lead MSOP w/ EP |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT8338
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LT8338
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
LT8338 | 1.2A, 42V Micropower Synchronous Boost Converter