High Input Voltage, Boost, Flyback, SEPIC and Inverting Controller
100V Synchronous Switching Regulator Controller
60V Low IQ Synchronous Boost Controller with PassThru
60V PolyPhase Synchronous Boost Controller with PassThru
Multi-Phase Current Mode Step-Up DC/DC Controller
Features and Benefits
- High Output Voltages: Up to 100V
- Large 1Ω Gate Drivers
- No Current Sense Resistor Required
- Dual N-Channel MOSFET Synchronous Drive
- ±0.5% 0.8V Voltage Reference
- Fast Transient Response
- Programmable Soft-Start
- Generates 10V Driver Supply from Input Supply
- Synchronizable to External Clock
- Power Good Output Voltage Monitor
- Adjustable Off-Time/Frequency: tOFF(MIN) < 100ns
- Adjustable Cycle-by-Cycle Current Limit
- Programmable Undervoltage Lockout
- Output Overvoltage Protection
- 28-Pin SSOP Package
The LTC3813 is a synchronous step-up switching regulator controller that can generate output voltages up to 100V. The LTC3813 uses a constant off-time peak current control architecture with accurate cycle-by-cycle current limit, without requiring a sense resistor.
A precise internal reference provides ±0.5% DC accuracy. A high bandwidth (25MHz) error amplifier provides very fast line and load transient response. Large 1Ω gate drivers allow the LTC3813 to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. A shutdown pin allows the LTC3813 to be turned off, reducing the supply current to 240µA.
- 24V Fan Supplies
- 48V Telecom and Base Station Power Supplies
- Networking Equipment, Servers
- Automotive and Industrial Control Systems
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
R533 Reliability Data3/26/2018
Synchronous Boost Converters Provide High Voltage without the Heat1/1/2008 LT Journal
Tools & Simulations
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.
Models for the following parts are available in LTspice:
LTC3813 Companion Parts
Recommended Suggested Oscillator
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 Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC3813EG#PBF||Material Declaration||Reliability Data||28-Lead SSOP|
|LTC3813EG#TRPBF||Material Declaration||Reliability Data||28-Lead SSOP|
|LTC3813IG#PBF||Material Declaration||Reliability Data||28-Lead SSOP|
|LTC3813IG#TRPBF||Material Declaration||Reliability Data||28-Lead SSOP|
|Wafer Fabrication Data||R533 Reliability Data|
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Please see the latest communication from our CCO regarding lead times.
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.