Products
LTC3111
RECOMMENDED FOR NEW DESIGNS15V, 1.5A Synchronous Buck-Boost DC/DC Converter
- Part Models
- 16
- 1ku List Price
- Starting From $4.82
Viewing:
Overview
- Regulated Output with VIN Above, Below or Equal to VOUT
- 2.5V to 15V Input and Output Voltage Range
- 1.5A Continuous Output Current: VIN ≥ 5V, VOUT = 5V, PWM Mode
- Single Inductor
- Accurate RUN Threshold
- Up to 95% Efficiency
- 800kHz Switching Frequency, Synchronizable Between 600kHz and 1.5MHz
- 49μA No-Load Quiescent Current in Burst Mode® Operation
- Output Disconnect in Shutdown
- Shutdown Current < 1μA
- Internal Soft-Start
- Small, Thermally Enhanced 14-Lead (3mm × 4mm × 0.75mm) DFN and 16-Lead MSOP Packages
The LTC3111 is a fixed frequency, synchronous buckboost DC/DC converter with an extended input and output range. The unique 4-switch, single inductor architecture provides low noise and seamless operation from input voltages above, below or equal to the output voltage.
With an input and output range of 2.5V to 15V, the LTC3111 is well suited for a wide variety of single or multiple-cell batteries, back-up capacitor or wall adapter source applications. Low RDS(ON) internal N-channel MOSFET switches and selectable PWM or Burst Mode operation produce high efficiency over a wide range of operating conditions. An accurate RUN pin allows the user to program the turn-on threshold voltage of the converter. Other features include: short-circuit protection, internal soft-start and thermal shutdown.
The LTC3111 is offered in both thermally enhanced 14-lead (3mm × 4mm × 0.75mm) DFN and 16-lead MSOP packages.
Applications
- 3.3V or 5V from 1, 2 or 3 Li-Ion, Multiple-Cell Alkaline/NiMH Batteries
- RF Transmitters
- Military, Industrial Power 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 |
|---|---|---|---|
| LTC3111EDE#PBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3111EDE#TRPBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3111EMSE#PBF | 16-Lead MSOP w/ EP | ||
| LTC3111EMSE#TRPBF | 16-Lead MSOP w/ EP | ||
| LTC3111HDE#PBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3111HDE#TRPBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3111HMSE#PBF | 16-Lead MSOP w/ EP | ||
| LTC3111HMSE#TRPBF | 16-Lead MSOP w/ EP | ||
| LTC3111IDE#PBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3111IDE#TRPBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3111IMSE#PBF | 16-Lead MSOP w/ EP | ||
| LTC3111IMSE#TRPBF | 16-Lead MSOP w/ EP | ||
| LTC3111MPDE#PBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3111MPDE#TRPBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3111MPMSE#PBF | 16-Lead MSOP w/ EP | ||
| LTC3111MPMSE#TRPBF | 16-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC3111EDE#PBF | PRODUCTION | |
| LTC3111EDE#TRPBF | PRODUCTION | |
| LTC3111EMSE#PBF | PRODUCTION | |
| LTC3111EMSE#TRPBF | PRODUCTION | |
| LTC3111IDE#PBF | PRODUCTION | |
| LTC3111IDE#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3) |
||
| LTC3111EMSE#PBF | PRODUCTION | |
| LTC3111EMSE#TRPBF | PRODUCTION | |
| LTC3111HMSE#PBF | PRODUCTION | |
| LTC3111HMSE#TRPBF | PRODUCTION | |
| LTC3111IMSE#PBF | PRODUCTION | |
| LTC3111IMSE#TRPBF | PRODUCTION | |
| LTC3111MPMSE#PBF | PRODUCTION | |
| LTC3111MPMSE#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC3111EMSE#PBF | PRODUCTION | |
| LTC3111EMSE#TRPBF | PRODUCTION | |
| LTC3111HMSE#PBF | PRODUCTION | |
| LTC3111HMSE#TRPBF | PRODUCTION | |
| LTC3111IMSE#PBF | PRODUCTION | |
| LTC3111IMSE#TRPBF | PRODUCTION | |
| LTC3111MPMSE#PBF | PRODUCTION | |
| LTC3111MPMSE#TRPBF | PRODUCTION | |
|
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC3111HDE#PBF | PRODUCTION | |
| LTC3111HDE#TRPBF | PRODUCTION | |
| LTC3111HMSE#PBF | PRODUCTION | |
| LTC3111HMSE#TRPBF | PRODUCTION | |
| LTC3111IMSE#PBF | PRODUCTION | |
| LTC3111IMSE#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
| Parts | Product Life Cycle | Description |
|---|---|---|
| Protection Switches & Controllers 1 | ||
| LTC4417 | RECOMMENDED FOR NEW DESIGNS | Prioritized PowerPath™ Controller |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3111
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
LTC3111 Demo Board | Buck-Boost Converter, 2.5V ≤ VIN ≤ 15V, VOUT = 5V @ 1.5A