SI4779CY |
RFQ for SI4779CY Required Field |
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| Product | Manufacturers | Pack | D/C |
| SI4779CY | - | SO-8 | 07+/08+ |
The Si4779CY n-channel high-side switch combines a low rDS(on) MOSFET switch with a user set, pulse gate control (PGC) based current limit. This switch is designed to protect the system power supply from overloads and short circuit conditions in applications such as USB. The PGC based approach to the current limiter provides the additional benefit of keeping the MOSFET junction temperature within specification, thereby eliminating the need for thermal shutdown. The low quiescent current makes the Si4779CY ideal for use in battery powered devices. The Si4779CY operates on both 3-V and 5-V busses, and is packaged in the LITTLE FOOT SO-8 package.
Typical Application |
Features |
| · Notebook Computers Power Management· USB Power Distribution· Hot Plug In Power Supplies· Power Supply/Load Protection· Battery-Charger Circuits | · User Set Over Current Limit From 400 mA to 2.4 A· Low rDS(on) 45 m (max) at 25°C· Fault Indicator· Under Voltage Lockout |
| Parameter | Symbol | Steady State | Unit | |
| Voltage, IN to GND | VIN | 0.3 to 7 | V | |
| Voltage, ON | VON | 0.3 to 7 | ||
| Continuous Drain Current (TJ = 150C)a | TA = 25RC | ID | 2.4 | A |
| TA = 85RC | 2.4 | |||
| Maximum Power Dissipationa | TA = 70RC | PD | 0.65 | W |
| Operating Junction and Storage Temperature Range | Tj, Tstg | 65 to 125 | °C | |
