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TA8261AH Datasheet(PDF) 4 Page - Toshiba Semiconductor |
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TA8261AH Datasheet(HTML) 4 Page - Toshiba Semiconductor |
4 / 16 page TA8261AH 2001-08-16 4 2. Stand-by SW function (pin 2) By means of controlling pin 2 (Stand-by terminal) to High and Low, the power supply can be set to ON and OFF. The threshold voltage of pin 2 is set at about 3 VBE (typ.), and the Power Supply current is about 2 µA (typ.) at the stand-by state. Control voltage of pin 2: V (SB) Stand-By Power V (SB) (V) ON OFF 0~1.5 OFF ON 3~VCC Adjustage of stand-by SW (1) Since VCC can directly be controlled to ON or OFF by the microcomputer, the switching relay can be omitted. (2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory for switching ― Conventional method ― ― Stand-by switch method ― Figure 3 Figure 2 With pin 2 set to High, power is turned ON |
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