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FR9855 Datasheet(PDF) 1 Page - Fitipower Integrated Technology Inc. |
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FR9855 Datasheet(HTML) 1 Page - Fitipower Integrated Technology Inc. |
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1 / 16 page  1 FR9855-Preliminary 0.3-JAN-2016 FR9855 85T 18V, 5.5A Synchronous Step-Down DC/DC Converter Pin Assignments SP Package (SOP-8 Exposed Pad) SS VIN FB PG GND 2 3 4 6 5 7 8 1 BST LX SHDN 9 GND DA Package (TDFN-10)(3mm x 3mm) 1 7 8 9 10 4 3 2 6 5 FB REG SS GND LX LX BST VIN VIN 11 GND SHDN Figure 1. Pin Assignments of FR9855 Ordering Information Description The FR9855 is a synchronous step-down DC/DC converter with fast constant on time (FCOT) mode control. The device provides 4.5V to 18V input voltage range and 5.5A continuous load current capability. Operation frequency depends on Input and output voltage condition. At light load condition, the FR9855 can operate at power saving mode to support high efficiency and reduce power loss. The FR9855 fault protection includes cycle-by-cycle current limit, short circuit protection, UVLO and thermal shutdown. The soft-start function prevents inrush current at turn-on. The FR9855 use fast constant on time control that provides fast transient response, the noise immunity and all kinds of very low ESR output capacitor for ensuring performance stabilization. The FR9855 is offered in SOP-8 (Exposed Pad) and TDFN-10 (3mm x 3mm) packages, which provides good thermal conductance. Features Low RDS(ON) Integrated Power MOSFET (70 mΩ/38mΩ) Wide Input Voltage Range: 4.5V to 18V Output Voltage Range: 0.765V to 8V 5.5A Output Current FCOT Mode Enables Fast Transient Response Pseudo 630kHz Frequency Power Good Function (for SOP8-EP Only) Input Under Voltage Lockout Adjustable Soft Start Function Cycle-by-Cycle Current Limit Hiccup Short Circuit Protection Over Temperature Protection with Auto Recovery SOP-8 Exposed Pad and TDFN-10(3mmx3mm) Packages Applications STB (Set-Top-Box) LCD Display, TV Distributed Power System Networking, XDSL Modem FR9855 □ Package Type SP: SOP-8 (Exposed Pad) DA: TDFN-10(3mm x 3mm) |
Número de pieza similar - FR9855 |
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Descripción similar - FR9855 |
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