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TAR5S44U Datasheet(PDF) 5 Page - Toshiba Semiconductor |
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TAR5S44U Datasheet(HTML) 5 Page - Toshiba Semiconductor |
5 / 23 page TAR5S15U~TAR5S50U 2003-02-10 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 (pin 1) be connected to the VCC pin. 2. Power Dissipation The power dissipation for board-mounted TAR5SxxU Series devices (rated at 450 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 Control Level Operation HIGH ON LOW OFF VIN 5 NOISE 4 1 3 GND 2 VOUT CONTROL The noise capacitor should be connected to NOISE pin to GND for stable operation. The recommended value is higher than 0.0047 µF. Circuit board material: glass epoxy, Circuit board dimension:30 mm × 30 mm, Copper foil pad area: 35 mm 2, t = 0.8 mm COUT CIN CNOISE VIN VOUT CONTROL GND NOISE |
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