Ultra High Efficiency 82 - 91%

High Efficiency, Small, Low price, Step-Down DC-DC Converter

5 Watt VSA Series

<Over-Current Protection>

This model has a built-in over-current protection circuit (operating at rating 105% or more), and protects against

the output over-current.

It will automatically recover by releasing the over-current condition. Please avoid keeping long-time over-current or

output short-circuit condition, it may cause converter's failure. For a protection in case a large current flows into

the input, caused by the converter's failure, be sure to connect a fuse to the input +line.

VSA05 Series

1) Over-Current Protection

The over-current characteristics are as you can see in figure 7, and will automatically recover by releasing

the over-current condition. However, when the load impedance comes close to 0 and the current grows,

the latch circuiit may operate. When the latch circuit operates, release the over-current condition and restart

the input.

(Figure 7)

2) Output Short-Circuit Protection

The over-current protection will also operate when the output is short. However, when the output suddenly

goes short, or restart the input when the output is still short, a very large current will flow into the converter

momentarily and the over-current point may grow due to the short-circuit current.

For a protection in case the output goes short or the load failure causes an output short-circuit condition, be

sure to connect a fuse.

VSA24 Series

The over-current characteristics are as you can see in figure 8, and will automatically recover by releasing

the over-current condition.

(Figure 8)

Kaga Electronics (USA) Inc.

www.volgen.com

Output Current (A)

Output Current (A)