Datasheet > VSA05-2.5S1R2

VSA05-2.5S1R2

更新时间： 2024-11-14 12:23:03

品牌	Logo	应用领域
VOLGEN		转换器
页数	文件大小	规格书
7页	606K
描述
High Efficiency, Small, Low price, Step-Down DC-DC Converter

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VSA05-2.5S1R2 数据手册

Application Notes

Ultra High Efficiency 82 - 91%

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

5 Watt

VSA Series

<Usage>

(A) Standard Connection

Recommended Additional Capacitor

VSA05-2.5S1R2

C1=16ZL330M (Rubycon) or KZE16VB330 (Nippon Chemi-con)

C2=10ZL680M (Rubycon) or KZE16VB680 (Nippon Chemi-con)

VSA24-3.3S1R2

C1=50ZL120M (Rubycon) or KZE50VB120（Nippon Chemi-con）

C2=10ZL470M (Rubycon) or KZE10VB470（Nippon Chemi-con）

VSA24-12S0R6

C1=50ZL120M (Rubycon) or KZE50VB120（Nippon Chemi-con）

C2=16ZL330M (Rubycon) or KZE16VB330（Nippon Chemi-con）

Note 1: If ON/OFF is not controlled, it should be connected to

GND line.

Note 2: When output voltage is rating, please open the terminal V. ADJ

(5 pin)

( Figure 4 )

Note 3: I/O capacitor (C1, C2) must be added. Please put I/O capacitor

to pin close as much as possible and wire with thick pattern.

For C1 & C2, please use low impedance capacitor.

Note 4: For VSA05 model, when the additional capacitor's capacity is

large, startup failure may occur. So please use an additional

capacitor which capacity is 8,200µF or below.

(B) ON/OFF Control

Input voltage is turned on by using ON/OFF control function, and it is

possible for ON/OFF control of output voltage without cutting it.

That is the effective function to compose the sequence of Power

Supply Systems. Also using this function, you can save the electric

power when Power Supply stands by. Please connect the terminal

ON/OFF with GND.

Between the terminal ON/OFF (1 Pin) and GND (3 Pin)

VSA05-2.5S1R2

Output voltage OFF mode : OPEN (2V to +Vin)

Output voltage ON mode : SHORT (-0.2 to 0.7V, 10µA)

VSA24-3.3S1R2

( Figure 5 )

Output voltage OFF mode : OPEN (2.5 to 5.3 V)

Output voltage ON mode : SHORT (-0.2 to 0.5 V, 250µA )

VSA24-12S0R6

Output voltage OFF mode : OPEN (2.5 to 5.3 V)

Output voltage ON mode : SHORT (-0.2 to 0.5 V, 250µA )

Note 1: Use an open collector (or drain) switch element for on/ off control.

Note 2: Set the switch element for on/ off control close to the converter, and lessen the noise effect by parallel patern short loops, or by

using shield wires.

To prevent miss operation caused by noise, it is effective to connect a capacitor between the on/ off pin and GND. However, if this

capacitor is too large, when impressing the input voltage at off, the charged current may flow and momentarily voltage may occur,

so be sure that the max. value is 3300pF.

Note 3: The on/ off pin voltage will be pulled up internally, so it is not necessary to impress voltage externally at off.

Kaga Electronics(USA) Inc.

www.volgen.com

12 3 4 5 6 7

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