LTC3411A
PRODUCTION1.25A, 4MHz, Synchronous Step-Down DC/DC Converter
- Part Models
- 8
- 1ku List Price
- Starting From $3.07
Overview
- Uses Tiny Capacitors and Inductor
- High Frequency Operation: Up to 4MHz
- Low RDS(ON) Internal Switches: 0.15Ω
- High Efficiency: Up to 96%
- Selectable Low Ripple (25mVP-P) Burst Mode® Operation: IQ = 40µA
- Stable with Ceramic Capacitors
- Current Mode Operation for Excellent Line and Load Transient Response
- Short-Circuit Protected
- Low Dropout Operation: 100% Duty Cycle
- Low Shutdown Current: IQ ≤ 1µA
- Output Voltages from 0.8V to 5V
- Synchronizable to External Clock
- Supports Prebiased Outputs
- Small 10-Lead 3mm × 3mm DFN or MSOP Package
The LTC3411A is a constant frequency, synchronous step-down DC/DC converter. Intended for medium power applications, it operates from a 2.5V to 5.5V input voltage range and has a user configurable operating frequency up to 4MHz, allowing the use of tiny, low cost capacitors and inductors 1mm or less in height. The output voltage is adjustable from 0.8V to 5.5V. Internal synchronous power switches provide high efficiency. The LTC3411A’s current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors.
The LTC3411A can be configured for automatic power saving Burst Mode operation (IQ = 40µA) to reduce gate charge losses when the load current drops below the level required for continuous operation. For reduced noise and RF interference, the SYNC/MODE pin can be configured to skip pulses or provide forced continuous operation.
To further maximize battery life, the P-channel MOSFET is turned on continuously in dropout (100% duty cycle). In shutdown, the device draws <1µA.
Applications
- Notebook Computers
- Digital Cameras
- Cellular Phones
- Handheld Instruments
- Board Mounted Power Supplies
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
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 |
|---|---|---|---|
| LTC3411AEDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3411AEDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3411AEMS#PBF | 10-Lead MSOP | ||
| LTC3411AEMS#TRPBF | 10-Lead MSOP | ||
| LTC3411AIDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3411AIDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3411AIMS#PBF | 10-Lead MSOP | ||
| LTC3411AIMS#TRPBF | 10-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Mar 13, 2019 - 19_0047 LTC3411A Data Sheet Change |
||
| LTC3411AEDD#PBF | PRODUCTION | |
| LTC3411AEDD#TRPBF | PRODUCTION | |
| LTC3411AEMS#PBF | PRODUCTION | |
| LTC3411AEMS#TRPBF | PRODUCTION | |
| LTC3411AIDD#PBF | PRODUCTION | |
| LTC3411AIDD#TRPBF | PRODUCTION | |
| LTC3411AIMS#PBF | PRODUCTION | |
| LTC3411AIMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC3411AEMS#PBF | PRODUCTION | |
| LTC3411AEMS#TRPBF | PRODUCTION | |
| LTC3411AIMS#PBF | PRODUCTION | |
| LTC3411AIMS#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LTC3411AIMS#PBF | PRODUCTION | |
| LTC3411AIMS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
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Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3411
- LTC3411A
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LTC3411
- LTC3411A
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
LTC3411AEDD Demo Board | 2.5V ≤ VIN ≤ 5.5V, VOUT = 1.8V/2.5V/3.3V @ 1.25A