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TAR5S15 Datasheet(PDF) 7 Page - Toshiba Semiconductor |
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TAR5S15 Datasheet(HTML) 7 Page - Toshiba Semiconductor |
7 / 23 page TAR5S15~TAR5S50 2007-11-01 7 5. Example of Characteristics when Ceramic Capacitor is Used Shown below is the stable operation area, where the output voltage does not oscillate, evaluated using a Toshiba evaluation circuit. The equivalent series resistance (ESR) of the output capacitor and output current determines this area. TAR5Sxx Series devices operate stably even when a ceramic capacitor is used as the output capacitor. If a ceramic capacitor is used as the output capacitor and the ripple frequency is 30 kHz or more, the ripple rejection differs from that when a tantalum capacitor is used. This is shown below. Toshiba recommend that users check that devices operate stably under the intended conditions of use. Examples of safe operating area characteristics Evaluation Circuit for Stable Operating Area Ripple Rejection Characteristic (f = 10 kHz~300 kHz) (TAR5S15) Stable Operating Area Output current IOUT (mA) (TAR5S50) Stable Operating Area (TAR5S28) Stable Operating Area Output current IOUT (mA) Output current IOUT (mA) (TAR5S30) Ripple Rejection – f Frequency f (Hz) TAR5S** GND CIN Ceramic VIN = VOUT + 1 V CONTROL CNOISE = 0.01 μF ROUT ESR COUT Ceramic Capacitors used for evaluation Made by Murata CIN: GRM40B105K COUT: GRM40B105K/GRM40B106K 30 0 10 20 40 70 50 60 Ceramic 2.2 μF 10 k 300 k 100 k Ceramic 10 μF Tantalum10 μF Tantalum 2.2 μF Tantalum 1 μF Ceramic 1 μF @VIN = 4.0 V, CNOISE = 0.01 μF, CIN = 1 μF, Vripple = 500 mVp-p, Iout = 10 mA, Ta = 25°C 1000 k 80 40 0.02 0.1 1 10 100 0 20 150 60 120 100 140 @VIN = 2.5 V, CNOISE = 0.01 μF, CIN = 1 μF, Cout = 1 μF~10 μF, Ta = 25°C Stable Operating Area 80 40 0.02 0.1 1 10 100 020 150 60 120 100 140 @VIN = 6.0 V, CNOISE = 0.01 μF, CIN = 1 μF, Cout = 1 μF~10 μF, Ta = 25°C Stable Operating Area 80 40 0.02 0.1 1 10 100 0 20 150 60 120 100 140 @VIN = 3.8 V, CNOISE = 0.01 μF, CIN = 1 μF, Cout = 1 μF~10 μF, Ta = 25°C Stable Operating Area |
Similar Part No. - TAR5S15_07 |
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Similar Description - TAR5S15_07 |
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