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TAR5S39U Datasheet(PDF) 6 Page - Toshiba Semiconductor |
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TAR5S39U Datasheet(HTML) 6 Page - Toshiba Semiconductor |
6 / 23 page TAR5S15U~TAR5S50U 2003-02-10 6 3. Ripple Rejection The devices of the TAR5SxxU Series feature a circuit with an excellent ripple rejection characteristic. Because the circuit also features an excellent output fluctuation characteristic for sudden supply voltage drops, the circuit is ideal for use in the RF blocks incorporated in all mobile telephones. 4. NOISE Pin TAR5SxxU Series devices incorporate a NOISE pin to reduce output noise voltage. Inserting a capacitor between the NOISE pin and GND reduces output noise. To ensure stable operation, insert a capacitor of 0.0047 µF or more between the NOISE pin and GND. The output voltage rise time varies according to the capacitance of the capacitor connected to the NOISE pin. Ripple Rejection − f TAR5S28U Input Transient Response Frequency f (Hz) Time t (ms) 0 10 100 1 k 10 k 100 k 300 k 10 20 30 40 50 60 70 80 10 µF 2.2 µF 1 µF VIN = 4.0 V, CNOISE = 0.01 µF, CIN = 1 µF, Vripple = 500 mVp −p, Iout = 10 mA, Ta = 25°C CNOISE − VN Turn On Waveform NOISE capacitance CNOISE (F) Time t (ms) 0 10 20 30 40 50 60 0.001 µ 0.01 µ 1.0 µ TAR5S50 0.1 µ TAR5S30 TAR5S15 CIN = 1 µF, Cout = 10 µF, Iout = 10 mA, Ta = 25°C 01 45 8 10 Input voltage 2.8 V 2 3 6 7 9 Output voltage 3.1 V 3.4 V Ta = 25°C, CIN = 1 µF, Cout = 10 µF, CNOISE = 0.01 µF, VIN: 3.4 V → 3.1 V, Iout = 50 mA 40 10 20 0 1 2 3 1 2 −10 0 90 30 0 60 50 80 70 Output voltage waveform Control voltage waveform CNOISE = 0.01 µF 1 µF 0.33 µF 0.1 µF CIN = 1 µF, Cout = 10 µF, Iout = 50 mA, Ta = 25°C |
Similar Part No. - TAR5S39U |
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Similar Description - TAR5S39U |
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