IC POWER MANAGEMENT
| Part Number | LTC4353IDE |
| Date Code | 2132 |
| Quantity Available | 14626 pcs |
| Manufacturer | Linear Technology/Analog Devices |
| Lead Time | Ship within 24 hours |
| QTY | 2500 |
| Datasheet | LTC4353.pdf |
| Minimum Quantity | More than 50pcs |
| Distributor | SingSun |
| RoHS Status | Lead free / RoHS Compliant |
| Ship From | Hong Kong |
| Shipment Way | EMS/SF/DHL/TNT/UPS/FedEx |
| Country of Assembly | CHINA |
| Country of Diffusion | USA |
| Lot Number | VA53783.67 |
| MSL | 1 |
| Base Product Number | LTC4353 |
| Packaging | - |
| Type | Current Sharing Controller |
| FET Type | N-Channel |
| Ratio - Input:Output | 2:02 |
| Internal Switch(s) | No |
| Delay Time - ON | 400ns |
| Delay Time - OFF | 300ns |
| Current - Output (Max) | - |
| Current - Supply | 1.5mA |
| Voltage - Supply | 2.9 V ~ 18 V |
| Applications | Redundant Power Supplies, Telecom Infrastructure |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-WFDFN Exposed Pad |
| Supplier Device Package | 16-DFN (4x3) |
The LTC4353IDE controls external N-channel MOSFETs to implement an ideal diode function. It replaces two high power Schottky diodes and their associated heat sinks, saving power and board area. The ideal diode function permits low loss power supply ORing and supply holdup applications.
The LTC4353IDE regulates the forward-voltage drop across the MOSFET to ensure smooth current transfer in diode-OR applications. A fast turn-on reduces the load voltage droop during supply switchover. If the input supply fails or is shorted, a fast turn-off minimizes reverse-current transients.
The controller operates with supplies from 2.9V to 18V. If both supplies are below 2.9V, an external supply is needed at the VCC pin. Enable inputs can be used to turn off the MOSFET and put the controller in a low current state. Status outputs indicate whether the MOSFETs are on or off.
