71

ICs

SI-3000KS Series

■External Dimensions (SOP8)

(Unit : mm)

0.995max.

0.10

1.27

1.27

8765

1234

–0.05

0.12 M

Pin Assignment

r Sence (ADJ for SI-3012KS)

t GND

y GND

u GND

i GND

Plastic Mold Package Type

Flammability: UL 94V-0

Product Mass: Approx. 0.1 g

■Block Diagram

■Typical Connection Diagram

●SI-3012KS

●SI-3025KS, SI-3033KS

●SI-3012KS

●SI-3025KS, SI-3033KS

as shown above.

2

1

REF

ADJ

GND

4

8

7

6

5

3

TSD

-

+

2

1

REF

Sense

GND

4

8

7

6

5

3

TSD

-

+

GND

5 to 8

R1

R2

2

3

1

ADJ

4

Load

GND

5 to 8

R2

2

3

1

sense

4

Load

For SI-3000KS series, Co has to be a low ESR capacitor.

When using the electrolytic capacitor, the SI-3000KS series may oscillate at a low temperature.

■Reference Data

Copper Laminate Area vs.

Thermal Resistance

Copper Laminate Area vs.

Power Dissipation

• Obtaining the junction temperature

pin (pin 7) with a thermocouple, etc. Then, substitute

this value in the following formula to obtain the junction

temperature.

(GND terminal)

10

100

140

120

100

80

60

40

1000

Area of PC board : 40×40mm

10

100

1.2

1

0.8

0.6

0.4

0.2

0

1000

Tj=100°C Area of PC board : 40×40mm

Ta=25°C

Ta=50°C

Ta=80°C

(GND terminal)