STK7563G_ データシートの表示（PDF） - SANYO -> Panasonic

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STK7563G_

Chopper Type Parallel 2-Output Voltage Regulators

SANYO -> Panasonic 

STK7560 Series

Sample Application Circuit 4 : STK7563F : 3 outputs of 5V, 24V, –12V

Sample Application Circuit 5 : STK7561A : Power supply for MSX personal computer,

2-output simultaneous ON/OFF

Sample Overvoltage Protector

Overcurrent may cause great damege. Particulary, the circuit connected to microcomputer power supply (5V) may be

damaged.

Shown below is a method to prevent this damage.

Connect a zener diode in parallel with the load. Use a DHD (double heat sink) type zener diode whose zener voltage is

1 to 2V higher than supply voltage (5V).

Overvoltage exceeding the zener voltage is limited by the zener diode.

With no current limiting rersistor connected, overcurrent flows in the zener diode.

Then, zener diode is shorted, thus protecting the load.

No.1773–5/13

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