6

Mar3-07

SPX202 600 mA Low Dropout Linear Regulator

© 2007 Sipex Corporation

PACKAGE PINOUTS

1

3

2

SOT-223 (M3)

Top View

TO-263-3 (T)

1

2

3

Front View

TO-220-3 (U)

1

2

3

Front View

TO-252 (R)

ADJ/GND

V

OUT

1

2

3

V

IN

ADJ/GND

V

OUT

V

IN

ADJ/GND

IN

ADJ/GND

V

OUT

V

IN

Top View

Figure 11. 5V Regulator with Shutdown

SPX1202

V

IN

R

1

R

2

10F

10F*

1kΩ,

330Ω

1%

+

+

4.7F

C

1

*C

1

improves ripple rejection.

Z

5V

ADJ

IN

OUT

(Note A)

V

OUT

Note A: V

1%

SPX1202

V

IN

10F

1kΩ

1%

330Ω

1%

+

+

4.7F

5V

ADJ

IN

OUT

(Note A)

1k

1k

TTL

Input

2N3904

DROPOUT (MAX)

Note A: V

IN(MIN)

= (Intended V

OUT

) + (V

)

Figure 10. Improving Ripple Rejection

Figure 12. Recommended Connections for Best Results

SPX1202

V

IN

Connect R

Case of Regulator

Resistance

ADJ

LAYOUT CONSIDERATIONS

Parasitic line resistance can degrade load regulation. In order not to affect the behavior of the regulator,

it is best to connect R

connected to the negative side of the load.