LTC3103
RECOMMENDED FOR NEW DESIGNS1.8μA Quiescent Current, 15V, 300mA Synchronous Step-Down DC/DC Converter
- Part Models
- 8
- 1ku List Price
- Starting From $3.73
Overview
- Ultralow Quiescent Current: 1.8μA
- Synchronous Rectification: Efficiency Up to 95%
- Wide VIN Range: 2.5V to 15V
- Wide VOUT Range: 0.6V to 13.8V
- 300mA Output Current
- User-Selectable Automatic Burst Mode® or Forced Continuous Operation
- Accurate and Programmable RUN Pin Threshold
- 1.2MHz Fixed Frequency PWM
- Internal Compensation
- Power Good Status Output for VOUT
- Available in Thermally Enhanced 3mm × 3mm × 0.75mm, 10-Pin DFN and 10-Pin MSOP Packages
The LTC3103 is a high efficiency, monolithic synchronous step-down converter using a current mode architecture capable of supplying 300mA of output current.
The LTC3103 offers two operational modes: automatic Burst Mode operation and forced continuous mode allowing the user the ability to optimize output voltage ripple, noise and light load efficiency. With Burst Mode operation enabled, the typical DC input supply current at no load drops to 1.8μA maximizing the efficiency for light loads. Selection of forced continuous mode provides very low noise constant frequency, 1.2MHz operation.
Additionally, the LTC3103 includes an accurate RUN comparator, thermal overload protection, a power good output and an integrated soft-start feature to guarantee that the power system start-up is well controlled.
Applications
- Remote Sensor Networks
- Distributed Power Systems
- Multicell Battery or SuperCap Regulator
- Energy Harvesters
- Portable Instruments
- Low Power Wireless Systems
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 |
|---|---|---|---|
| LTC3103EDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3103EDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3103EMSE#PBF | 10-Lead MSOP w/ EP | ||
| LTC3103EMSE#TRPBF | 10-Lead MSOP w/ EP | ||
| LTC3103IDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3103IDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3103IMSE#PBF | 10-Lead MSOP w/ EP | ||
| LTC3103IMSE#TRPBF | 10-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only) |
||
| LTC3103EDD#PBF | PRODUCTION | |
| LTC3103EDD#TRPBF | PRODUCTION | |
| LTC3103IDD#PBF | PRODUCTION | |
| LTC3103IDD#TRPBF | PRODUCTION | |
|
Jul 31, 2020 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan) |
||
| LTC3103EDD#PBF | PRODUCTION | |
| LTC3103EDD#TRPBF | PRODUCTION | |
| LTC3103EMSE#PBF | PRODUCTION | |
| LTC3103EMSE#TRPBF | PRODUCTION | |
| LTC3103IDD#PBF | PRODUCTION | |
| LTC3103IDD#TRPBF | PRODUCTION | |
| LTC3103IMSE#PBF | PRODUCTION | |
| LTC3103IMSE#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3) |
||
| LTC3103EMSE#PBF | PRODUCTION | |
| LTC3103EMSE#TRPBF | PRODUCTION | |
| LTC3103IMSE#PBF | PRODUCTION | |
| LTC3103IMSE#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC3103EMSE#PBF | PRODUCTION | |
| LTC3103EMSE#TRPBF | PRODUCTION | |
| LTC3103IMSE#PBF | PRODUCTION | |
| LTC3103IMSE#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
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|---|---|---|
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| Ideal Diodes and PowerPath Controllers 1 | ||
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| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Switching Regulators & Controllers 1 | ||
| LTC3880 | RECOMMENDED FOR NEW DESIGNS | Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC3104 | RECOMMENDED FOR NEW DESIGNS | 2.6μA Quiescent Current, 15V, 300mA Synchronous Step-Down DC/DC Converter and 10mA LDO |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3103
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.
Evaluation Kits
LTC3103EDD Demo Board I 2.5 ≤ VIN ≤ 15V, VOUT = 1.8V @ 300mA
Resources
Reference Designs
