94

SI-8201L•8203L/SI-8301L

SI-8211L•8213L

sBlock Diagram

sStandard External Circuit

Vref

GND

Amp.

Drive

Vref

Tr1

Tr2

GND

Amp.

Drive

GND

SI-8200L

GND

++

220

µF

470

µF

GND

DC Input

NC

GND

SI-8300L

GND

GND

++

470

µF

470

µF

DC Input

ηχ :Efficiency (%)

The efficiency depends on the input

voltage and the output current.Thus,

obtain the value from the efficiency

graph and substitute the percentage

in the formula above.

100

–1

ηχ

1.5

1.0

0.5

0

0

25

50

75

100

°C)

SI-8201L

8203L

SI-8211L

8213L

1. A low-impedance capacitor suitable for switching applications must be used for the external capacitor and must be connected as close to the

IC as possible in order to assure low ripple voltage and stable switching operation.

2. The SI-8200L and 8300L series do not have a built-in overcurrent protection circuit. Thus, avoid short-circuit conditions that may cause an

overcurrent.

3. The SI-8300L series may not start up if the input voltage rises too rapidly.

Do not use the SI-8300L series in applications where the input terminal, pin6, is opened and closed directly in a state where the input voltage

is already applied.

5. The IC's metalic heatsink is electrically floating. Do not connect it to GND or any other circuit.

6. Since the SI-8200L and 8300L series have an open-package construction, they can only be used in specific environments. Verify the operating

environment and use the IC within the conditions indicated in the reliability data.

qSI-8200L/8300L Series

3.0

2.0

1.0

0

0

25

50

75

100

°C)

SI-8301L