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JF24S15-1000

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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

logic-low voltage while sinking 1mA.

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