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S-8351A20MC-J2FT2X Datasheet(PDF) 12 Page - Seiko Instruments Inc |
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S-8351A20MC-J2FT2X Datasheet(HTML) 12 Page - Seiko Instruments Inc |
12 / 51 page STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series Rev.3.0_01 12 Table 15 (2 / 2) (Ta = 25 °C unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Measurement circuit OFF / ON pin input voltage (With shutdown function) VSH VOUT = VOUT(S) × 0.95, Measured oscillation at CONT pin 0.75 − − V 2 VSL1 VOUT = VOUT(S) × 0.95, Judged oscillation stop at CONT pin At VOUT ≥1.5 V − − 0.3 V 2 VSL2 At VOUT <1.5 V − − 0.2 V 2 OFF / ON pin input current (With shutdown function) ISH OFF / ON V = 10 V − 0.1 − 0.1 μA 2 ISL OFF / ON V = 0 V − 0.1 − 0.1 μA 2 Efficiency EFFI − S-8351x30 − 86 − % 1 S-8351x50 − 88 − % 1 External parts Coil: CDRH6D28-101 (100 μH) of Sumida Corporation Diode: MA2Z748 (Shottky type) of Matsushita Electric Industrial Co., Ltd. Capacitor: F93 (16 V, 47 μF tantalum type) of Nichicon Corporation VIN = VOUT(S) × 0.6 applied, IOUT = VOUT(S) / 250 Ω With shutdown function : OFF / ON pin is connected to VOUT For VDD / VOUT separate type : VDD pin is connected to VOUT pin Remark 1. VOUT(S) specified above is the set output voltage value, and VOUT is the typical value of the actual output voltage. 2. VDD / VOUT separate type A step-up operation is performed from VDD = 0.8 V. However, 1.8 V ≤VDD<10 V is recommended stabilizing the output voltage and oscillation frequency. (VDD ≥1.8 V must be applied for products with a set value of less than 1.9 V.) |
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