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TK11349BMCL Datasheet(PDF) 10 Page - TOKO, Inc |
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TK11349BMCL Datasheet(HTML) 10 Page - TOKO, Inc |
10 / 16 page TK113xxBM/U Page 10 April 2000 TOKO, Inc. Reverse Voltage Protection Reverse voltage protection prevents damage due to the output voltage being higher than the input voltage. This fault condition can occur when the output capacitor remains charged and the input is reduced to zero, or when an external voltage higher than the input voltage is applied to the output side. CONTROL CURRENT DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.) CN VIN SW RC SOT23L CN VIN SW RC SOT89 CONTROL PIN CURRENT VS. VOLTAGE 0 123 VCONT (V) 0 10 20 30 40 50 45 VOUT RCONT = 0 RCONT =100K Note: V CONT = differential voltage from VIN pin to VCONT pin. If the control function is not used, connect the control terminal to V IN. When the control function is used, the control current can be reduced by inserting a series resistor (R CONT) between the control terminal and VIN. The value of this resistor should be determined from the graph below. The requirement for the pullup resistor (R PULLUP) is deter- mined by the external control circuitry. For example, open collector/open drain logic may require R PULLUP over tem- perature; CMOS logic will not require R PULLUP. |
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