Products
LTC4355
RECOMMENDED FOR NEW DESIGNSPositive High Voltage Ideal Diode-OR with Input Supply and Fuse Monitors
- Part Models
- 14
- 1ku List Price
- Starting From $3.52
Viewing:
Overview
- Replaces Power Schottky Diodes
- Controls N-Channel MOSFETs
- 0.3μs Turn-Off Time Limits Peak Fault Current
- Wide Operating Voltage Range: 9V to 80V
- Smooth Switchover without Oscillation
- No Reverse DC Current
- Monitors VIN, Fuse, and MOSFET Diode
- Available in 14-Lead (4mm × 3mm) DFN, 16-Lead MS and SO Packages
The LTC4355 is a positive voltage ideal diode-OR controller that drives two external N-channel MOSFETs. Forming the diode-OR with N-channel MOSFETs instead of Schottky diodes reduces power consumption, heat dissipation and PC board area.
With the LTC4355, power sources can easily be ORed together to increase total system reliability. The LTC4355 can diode-OR two positive supplies or the return paths of two negative supplies, such as in a –48V system.
In the forward direction the LTC4355 controls the voltage drop across the MOSFET to ensure smooth current transfer from one path to the other without oscillation. If a power source fails or is shorted, fast turnoff minimizes reverse current transients.
Power fault detection indicates if the input supplies are not in regulation, the inline fuses are blown, or the voltages across the MOSFETs are greater than the fault threshold.
Applications
- High Availability Systems
- AdvancedTCA® (ATCA) Systems
- +48V and –48V Distributed Power Systems
- Telecom Infrastructure
Documentation
Data Sheet 1
User Guide 1
Design Note 2
Technical Articles 3
Product Selection Guide 1
Webcast 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 |
|---|---|---|---|
| LTC4355CDE#PBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4355CDE#TRPBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4355CMS#PBF | 16-Lead MSOP | ||
| LTC4355CMS#TRPBF | 16-Lead MSOP | ||
| LTC4355CS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC4355CS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC4355HMS#PBF | 16-Lead MSOP | ||
| LTC4355HMS#TRPBF | 16-Lead MSOP | ||
| LTC4355IDE#PBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4355IDE#TRPBF | 14-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4355IMS#PBF | 16-Lead MSOP | ||
| LTC4355IMS#TRPBF | 16-Lead MSOP | ||
| LTC4355IS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC4355IS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products |
||
| LTC4355CDE#PBF | PRODUCTION | |
| LTC4355CDE#TRPBF | PRODUCTION | |
| LTC4355IDE#PBF | PRODUCTION | |
| LTC4355IDE#TRPBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
| LTC4355CMS#PBF | PRODUCTION | |
| LTC4355CMS#TRPBF | PRODUCTION | |
| LTC4355HMS#PBF | PRODUCTION | |
| LTC4355HMS#TRPBF | PRODUCTION | |
| LTC4355IMS#PBF | PRODUCTION | |
| LTC4355IMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC4355CMS#PBF | PRODUCTION | |
| LTC4355CMS#TRPBF | PRODUCTION | |
| LTC4355HMS#PBF | PRODUCTION | |
| LTC4355HMS#TRPBF | PRODUCTION | |
| LTC4355IMS#PBF | PRODUCTION | |
| LTC4355IMS#TRPBF | PRODUCTION | |
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC4355CS#PBF | PRODUCTION | |
| LTC4355CS#TRPBF | PRODUCTION | |
| LTC4355IS#PBF | PRODUCTION | |
| LTC4355IS#TRPBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0173 Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG] |
||
| LTC4355CS#PBF | PRODUCTION | |
| LTC4355CS#TRPBF | PRODUCTION | |
| LTC4355IS#PBF | PRODUCTION | |
| LTC4355IS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC4355
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.