TAR5S15~TAR5S50

2007-11-01

5

Application Note

1. Recommended Application Circuit

The figure above shows the recommended configuration for using a point regulator. Insert a capacitor for

stable input/output operation. If the control function is not to be used, Toshiba recommend that the control pin

2. Power Dissipation

The power dissipation for board-mounted TAR5Sxx Series devices (rated at 380 mW) is measured using a

board whose size and pattern are as shown below. When incorporating a device belonging to this series into

your design, derate the power dissipation as far as possible by reducing the levels of parameters such as input

voltage, output current and ambient temperature. Toshiba recommend that these devices should typically be

derated to 70%~80% of their absolute maximum power dissipation value.

Thermal Resistance Evaluation Board

Circuit board material: glass epoxy,

Circuit board dimension:30 mm

× 30 mm,

Copper foil pad area: 50 mm

2

(t

= 0.8 mm)

CONTROL GND

NOISE

5

NOISE

4

1

3

GND

2

CONTROL

Control Level

Operation

HIGH

ON

LOW

OFF