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JF48S15-1000 Datasheet(PDF) 5 Page - Wall Industries,Inc. |
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JF48S15-1000 Datasheet(HTML) 5 Page - Wall Industries,Inc. |
5 / 15 page TECHNICAL DATASHEET JF24S15-1000 (888) 597-WALL www.wallindustries.com Page 5 of 15 The Figure below details five possible circuits for driving the ON/OFF pin. Remote ON/OFF Two remote ON/OFF controls are available for the JF Series Positive logic remote ON/OFF turns the modules on during a logic-high voltage on the remote ON/OFF pin, and off during logic low. Negative logic remote ON/OFF turns the module off during logic high and on during logic low or when the remote ON/OFF pin is shorted to the -INPUT pin. For negative logic remote ON/OFF control add the suffix “R” for DIP type and “SR” for SMT type. For the positive logic ON/OFF control there is no suffix for DIP type and add the suffix “S” for SMT type. Ex: JF48S15-1000S To turn the power module on and off, the user must supply a switch to control the voltage between the ON/OFF terminal (VON/OFF) and the -INPUT. The switch may be an open collector or equivalent (see figure). A logic low is VON/OFF = -0.7V to 1.2V. The maximum ION/OFF during a logic low is 1mA. The switch should maintain a logic-low voltage while sinking 1mA. During logic high, the maximum VON/OFF generated by the power module is 15V. The maximum allowable leakage current of the switch at Von/off = 15V is 50uA The module has internal capacitance to reduce noise at the ON/OFF pin. Additional capacitance is not generally needed and may degrade the start-up characteristics of the module. ON/OFF Control -INPUT Remote Enable Circuit ON/OFF Control -INPUT Negative Logic (Permanently Enabled) -INPUT Positive Logic (Permanently Enabled) ON/OFF Control -INPUT Open Collector Enable Circuit ON/OFF Control ON/OFF Control -INPUT Negative Logic (Permanently Enabled) 5V TTL/ CMOS Figure 3 |
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