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PTN78020H Datasheet(PDF) 5 Page - Texas Instruments |
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PTN78020H Datasheet(HTML) 5 Page - Texas Instruments |
5 / 26 page PIN ASSIGNMENT PTN78020 (TopView) 1 2 7 6 5 4 3 PTN78020W PTN78020H www.ti.com .................................................................................................................................................. SLTS228B – DECEMBER 2004 – REVISED APRIL 2008 TERMINAL FUNCTIONS TERMINAL I/O DESCRIPTION NAME NO. This is the common ground connection for the VI and VO power connections. It is also the 0-Vdc reference GND 1, 7 for the Inhibit and VO Adjust control inputs. VI 2 I The positive input voltage power node to the module, which is referenced to common GND. The Inhibit pin is an open-collector/drain active-low input that is referenced to GND. Applying a low-level ground signal to this input disables the module's output and turns off the output voltage. When the Inhibit Inhibit 3 I control is active, the input current drawn by the regulator is significantly reduced. If the Inhibit pin is left open-circuit, the module produces an output whenever a valid input source is applied. A 1% resistor must be connected between this pin and GND (pin 7) to set the output voltage of the module. If left open-circuit, the output voltage is set to its default value. The temperature stability of the VO Adjust 4 I resistor should be 100 ppm/ °C (or better). The standard resistor value for a number of common output voltages is provided in the application information. The sense input allows the regulation circuit to compensate for voltage drop between the module and the VO Sense 5 I load. For optimum voltage accuracy, VO Sense should be connected to VO. If the sense feature is not used, this pin may be left disconnected. VO 6 O The regulated positive power output with respect to the GND node. Copyright © 2004–2008, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): PTN78020W PTN78020H |
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