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S-8341D25AFT-T2-G Datasheet(PDF) 9 Page - Seiko Instruments Inc |
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S-8341D25AFT-T2-G Datasheet(HTML) 9 Page - Seiko Instruments Inc |
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9 / 55 page  STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.4.0_01 S-8340/8341 Series 9 (2) 600 kHz, Output Voltage External Setting Type (B Type) Table 6 (Ta = 25 °C unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit Measurement Circuit Output voltage*1 VOUT(E) VIN = 2.4 V, IOUT = 80 mA 3.920 4.000 4.080 V 3 FB pin voltage VFB VIN = 2.4 V, IOUT = 80 mA 0.980 1.000 1.020 V 3 Input voltage VIN − − − 6 V 3 Oscillation start voltage VST2 No external parts. The voltage is applied to VDD. − − 0.9 V 4 Current consumption 1 ISS1 VOUT = 3.8 V − 460 740 μA 4 Current consumption 2 ISS2 VOUT = 4.5 V − 180 300 μA 4 Current consumption at shutdown ISSS VOUT = 3.8 V, VON/OFF = 0 V − − 3.0 μA 4 EXT pin output current IEXTH VEXT = VOUT(E) − 0.2 V −19 −30 − mA − IEXTL VEXT = 0.2 V 46 69 − mA − Line regulation ΔVOUT1 1.6 V ≤ VIN ≤ 2.4 V, IOUT = 80 mA − 20 40 mV 3 Load regulation ΔVOUT2 VIN = 2.4 V, 10 μA ≤ IOUT ≤ 100 mA − 20 40 mV 3 Output voltage temperature coefficient*2 ΔVOUT ΔTa•VOUT VIN = 2.4 V, IOUT = 80 mA, Ta = −40 to +85°C − ±100 − ppm/°C 3 Oscillation frequency fOSC VOUT = 3.8 V, measure waveform at the EXT pin 510 600 690 kHz 4 Maximum duty ratio MaxDuty VIN = 3.8 V, measure waveform at the EXT pin 73 82 89 % 4 PWM/PFM switching duty ratio (S-8341 Series B type) PFMDuty VIN = VOUT(E) − 0.1 V, under no load 19 27 35 % 3 Current limit detection voltage VSENSE VOUT = 3.8 V Judge oscillation at the EXT pin or oscillation stop at “L” 90 120 150 mV 4 FB pin input current IFB VOUT = 6 V, VFB = 1.5 V −50 − 50 nA 4 ON/OFF pin input voltage VSH VOUT = 3.8 V Judge oscillation at the EXT pin. 0.8 − − V 4 VSL VOUT = 3.8 V Judge oscillation stop at the EXT pin. − − 0.3 V 4 ON/OFF pin input leakage current ISH VOUT = 6 V, VON/OFF = 6 V −0.1 − 0.1 μA 4 ISL VOUT = 6 V, VON/OFF = 0 V −0.1 − 0.1 μA 4 Soft-start time tSS VIN = 2.4 V, CSS = 4700 pF, IOUT = 80 mA, S-8340B00 3.0 6.0 14.0 ms 3 Measure time until oscillation occurs at the EXT pin. S-8341B00 3.0 8.0 14.0 ms 3 Efficiency EFFI VIN = 2.4 V, IOUT = 80 mA − 85 − % 3 |
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