LTC3245
LTC3245
RECOMMENDED FOR NEW DESIGNSWide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump
- Part Models
- 16
- 1ku List Price
- Starting From $4.27
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Overview
- 2.7V to 38V VIN Range
- IQ = 18μA Operating; 4μA in Shutdown
- 12V to 5V Efficiency = 81%
- Multimode Operation (2:1, 1:1, 1:2) with Automatic Mode Switching
- Low Noise, Constant Frequency Operation
- Pin Selectable Burst Mode® Operation
- VOUT: Fixed 3.3V, 5V or Adjustable (2.5V to 5V)
- IOUT Up to 250mA
- Overtemperature and Short-Circuit Protection
- Operating Junction Temperature: 150°C Maximum
- Thermally Enhanced 12-Pin MSOP and Low Profile 12-Pin (3mm × 4mm) DFN Packages
- AEC-Q100 Qualified for Automotive Applications
The LTC3245 is a switched capacitor buck-boost DC/DC converter that produces a regulated output (3.3V, 5V or adjustable) from a 2.7V to 38V input. The device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage. Internal circuitry automatically selects the conversion ratio to optimize efficiency as input voltage and load conditions vary. No inductors are required.
The unique constant frequency architecture provides a lower noise output than conventional charge pump regulators. To optimize efficiency at the expense of slightly higher output ripple, the device has pin selectable Burst Mode operation.
Low operating current (20μA with no load, 4μA in shutdown) and low external parts count (three small ceramic capacitors) make the LTC3245 ideally suited for low power, space constrained automotive/industrial applications. The device is short-circuit and overtemperature protected, and is available in thermally enhanced 12-pin MSOP and low profile 3mm × 4mm 12-pin DFN packages.
APPLICATIONS
- Automotive ECU/CAN Transceiver Supplies
- Industrial Housekeeping Supplies
- Low Power 12V to 5V Conversion
Documentation
Data Sheet 1
User Guide 1
Technical Articles 2
Video 1
Product Selector Card 1
Brochure 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 |
|---|---|---|---|
| LTC3245EDE#PBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3245EDE#TRPBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3245EMSE#PBF | 12-Lead MSOP w/ EP | ||
| LTC3245EMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LTC3245HMSE#PBF | 12-Lead MSOP w/ EP | ||
| LTC3245HMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LTC3245IDE#PBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3245IDE#TRPBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC3245IMSE#PBF | 12-Lead MSOP w/ EP | ||
| LTC3245IMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LTC3245IMSE#WPBF | 12-Lead MSOP w/ EP | ||
| LTC3245IMSE#WTRPBF | 12-Lead MSOP w/ EP | ||
| LTC3245JMSE#WPBF | 12-Lead MSOP w/ EP | ||
| LTC3245JMSE#WTRPBF | 12-Lead MSOP w/ EP | ||
| LTC3245MPMSE#PBF | 12-Lead MSOP w/ EP | ||
| LTC3245MPMSE#TRPBF | 12-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 17, 2025 - 25_0043 Change of Gold to Copper Wire and BOM (Automotive) |
||
| LTC3245EDE#PBF | PRODUCTION | |
| LTC3245EDE#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) |
||
| LTC3245EDE#PBF | PRODUCTION | |
| LTC3245EDE#TRPBF | PRODUCTION | |
| LTC3245EMSE#PBF | PRODUCTION | |
| LTC3245EMSE#TRPBF | PRODUCTION | |
| LTC3245HMSE#PBF | PRODUCTION | |
| LTC3245HMSE#TRPBF | PRODUCTION | |
| LTC3245IDE#PBF | PRODUCTION | |
| LTC3245IDE#TRPBF | PRODUCTION | |
| LTC3245IMSE#PBF | PRODUCTION | |
| LTC3245IMSE#TRPBF | PRODUCTION | |
| LTC3245MPMSE#PBF | PRODUCTION | |
| LTC3245MPMSE#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC3245EMSE#PBF | PRODUCTION | |
| LTC3245EMSE#TRPBF | PRODUCTION | |
| LTC3245HMSE#PBF | PRODUCTION | |
| LTC3245HMSE#TRPBF | PRODUCTION | |
| LTC3245MPMSE#PBF | PRODUCTION | |
| LTC3245MPMSE#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LTC3245HMSE#PBF | PRODUCTION | |
| LTC3245HMSE#TRPBF | PRODUCTION | |
|
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices |
||
| LTC3245HMSE#PBF | PRODUCTION | |
| LTC3245HMSE#TRPBF | PRODUCTION | |
|
Apr 17, 2025 - 25_0119 Bond Wire Change from Gold to Copper (Automotive) |
||
| LTC3245IMSE#PBF | PRODUCTION | |
| LTC3245IMSE#TRPBF | PRODUCTION | |
| LTC3245IMSE#WPBF | PRODUCTION | |
| LTC3245IMSE#WTRPBF | PRODUCTION | |
| LTC3245JMSE#WPBF | PRODUCTION | |
| LTC3245JMSE#WTRPBF | 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 |
|---|---|---|
| Hot Swap Controllers 1 | ||
| LT4363 | RECOMMENDED FOR NEW DESIGNS | High Voltage Surge Stopper with Current Limit |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC3245
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
LTC3245EMSE Demo Board | Buck-Boost Charge Pump, 2.7V ≤ VIN ≤ 38V, VOUT = 1.2V/3.3V/5V @ 250mA