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S8351 Datasheet(PDF) 13 Page - Seiko Instruments Inc |
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S8351 Datasheet(HTML) 13 Page - Seiko Instruments Inc |
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13 / 51 page  STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0_01 S-8351/8352 Series 13 (2) S-8352 Series Table 16 (1 / 2) (Ta = 25 °C unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Measurement circuit Output voltage VOUT − VOUT(S) × 0.976 VOUT(S) VOUT(S) × 1.024 V 3 Input voltage VIN − − − 10 V 3 Operation start voltage VST1 IOUT = 1 mA − − 0.9 V 3 Oscillation start voltage VST2 No external parts, Voltage applied to VOUT − − 0.8 V 4 Current consumption 1 ISS1 VOUT = VOUT(S) × 0.95 S-8352x15 to 19 − 7.4 12.3 μA 4 S-8352x20 to 29 − 12.0 20.0 μA 4 S-8352x30 to 39 − 17.8 29.6 μA 4 S-8352x40 to 49 − 24.7 41.1 μA 4 S-8352x50 to 59 − 32.7 54.5 μA 4 S-8352x60 to 65 − 43.0 71.6 μA 4 Current consumption 2 ISS2 VOUT = VOUT(S) + 0.5 V S-8352x15 to 19 − 2.3 3.5 μA 4 S-8352x20 to 29 − 2.5 3.8 μA 4 S-8352x30 to 39 − 2.7 4.1 μA 4 S-8352x40 to 49 − 2.9 4.4 μA 4 S-8352x50 to 59 − 3.1 4.7 μA 4 S-8352x60 to 65 − 3.3 5.1 μA 4 Current consumption during shutdown (With shutdown function) ISSS OFF / ON V = 0 V − − 0.5 μA 4 EXT pin output current IEXTH VEXT = VOUT − 0.4 V S-8352x15 to 19 − 3.5 − 6.3 − mA 4 S-8352x20 to 24 − 5.2 − 9.4 − mA 4 S-8352x25 to 29 − 6.8 − 12.3 − mA 4 S-8352x30 to 39 − 8.2 − 14.9 − mA 4 S-8352x40 to 49 − 10.7 − 19.4 − mA 4 S-8352x50 to 59 − 12.5 − 22.8 − mA 4 S-8352x60 to 65 − 13.9 − 25.2 − mA 4 IEXTL VEXT = − 0.4 V S-8352x15 to 19 3.8 6.9 − mA 4 S-8352x20 to 24 5.6 10.2 − mA 4 S-8352x25 to 29 7.3 13.3 − mA 4 S-8352x30 to 39 8.9 16.2 − mA 4 S-8352x40 to 49 11.6 21.1 − mA 4 S-8352x50 to 59 13.7 25.0 − mA 4 S-8352x60 to 65 15.3 27.8 − mA 4 Line regulation ΔVOUT1 VIN = VOUT(S) × 0.4 to × 0.6 − 30 60 mV 3 Load regulation ΔVOUT2 IOUT = 10 μA to VOUT(S) / 100 × 1.25 − 30 60 mV 3 Output voltage temperature coefficient OUT OUT V Ta ∆ V ∆ • Ta = − 40°C to + 85°C − ±50 − ppm / °C 3 Oscillation frequency fOSC VOUT = VOUT(S) × 0.95, Measured waveform at EXT pin 90 100 110 kHz 4 Duty ratio 1 Duty1 VOUT = VOUT(S) × 0.95, Measured waveform at EXT 70 75 80 % 4 Duty ratio 2 (For A, B, D type) Duty2 Measured waveform at EXT pin at light load − 50 − % 3 |
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