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UCC37321 Datasheet(PDF) 5 Page - Texas Instruments |
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UCC37321 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 28 page UCC27321, UCC27322 UCC37321, UCC37322 SLUS504D − SEPTEMBER 2002 − REVISED SEPTEMBER 2007 5 www.ti.com pin configurations 1 2 3 4 8 7 6 5 VDD IN ENBL AGND VDD OUT OUT PGND PDIP (P) PACKAGE (TOP VIEW) SOIC (D) OR MSOP (DGN) PACKAGE (TOP VIEW) VDD OUT OUT PGND 8 7 6 5 1 2 3 4 VDD IN ENBL AGND power dissipation rating table PACKAGE SUFFIX θjc (5C/W) θja (5C/W) Power Rating (mW) TA = 705C † Derating Factor Above 70 5C (mW/5C) † SOIC-8 D 42 84 – 160 } 344−655 } 6.25 − 11.9 } PDIP-8 P 49 110 500 9 MSOP PowerPAD-8 DGN 4.7 50−59 1370 17.1 † 125°C operating junction temperature is used for power rating calculations ‡ The range of values indicates the effect of pc−board. These values are intended to give the system designer an indication of the best and worst case conditions. In general, the system designer should attempt to use larger traces on the pc−board where possible in order to spread the heat away form the device more effectively. For additional information on device temperature management, please refer to Packaging Information section of the Power Supply Control Products Data Book, (Ti Literature Number SLUD003). terminal functions TERMINAL FUNCTION NO. NAME I/O FUNCTION 4 AGND − Common ground for input stage. This ground should be connected very closely to the source of the power MOSFET which the driver is driving. Grounds are separated to mini- mize ringing affects due to output switching di/dt which can affect the input threshold. 3 ENBL I Enable input for the driver with logic compatible threshold and hysteresis. The driver output can be enabled and disabled with this pin. It is internally pulled up to VDD with 100-kΩ resistor for active high operation. The output state when the device is disabled will be low regardless of the input state. 2 IN I Input signal of the driver which has logic compatible threshold and hysteresis. 6, 7 OUT O Driver outputs that must be connected together externally. The output stage is capable of providing 9-A peak drive current to the gate of a power MOSFET. 5 PGND − Common ground for output stage. This ground should be connected very closely to the source of the power MOSFET which the driver is driving. Grounds are separated to mini- mize ringing affects due to output switching di/dt which can affect the input threshold. 1, 8 VDD I Supply voltage and the power input connections for this device. Three pins must be con- nected together externally. |
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