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SM8131B Datasheet(PDF) 4 Page - Nippon Precision Circuits Inc |
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SM8131B Datasheet(HTML) 4 Page - Nippon Precision Circuits Inc |
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4 / 21 page  SM8131B NIPPON PRECISION CIRCUITS INC.—4 Electrical Characteristics VIN = 3.6V, GND = 0V, Ta = 25°C unless otherwise noted Parameter Pin Symbol Condition Rating Unit min typ max Supply voltage range VIN VIN0 ×1.0 mode, IOUT = 0mA 2.7 3.6 4.6 V VIN ×1.5 mode, IOUT = 120mA 3.3 3.6 4.6 V Standby current VIN ISTB Power-save mode – 0.01 1.00 µA Quiescent current VIN IDD1 ×1.0 mode, IOUT = 0mA – 0.7 1.5 mA IDD2 ×1.5 mode, IOUT = 0mA – 2.0 4.0 mA Output voltage VOUT VOUT ×1.5 mode, IOUT = 120mA 4.0 4.2 4.4 V Maximum output current VOUT IOUT ×1.5 mode – 120 – mA Operating frequency C1M fOSC ×1.5 mode switching frequency 650 750 850 kHz Internal power-ON reset time*1 *1. Design guaranteed value EN TPOR Time from when power is applied until internal circuits reset – 0.05 1.0 ms Soft start time DIN1 to 6 TSS EN startup → ILED rising edge – 1.3 5.0 ms LED drive pin leakage current DIN1 to 6 Ileak1 to 6 Power-save mode, DIN pin = 4.2V – 0.01 1.00 µA LED drive current DIN1 to 6 ILED1 to 6 ×1.0 mode, RSET = 20kΩ 19.4 20.0 20.6 mA LED drive current setting resistance*1 ISET RSET RSET maximum value – – 50 k Ω Input signal frequency*1 EN1/2 fENIN EN input pulse duty 50 %, maximum signal input frequency – – 150 kHz Input pulse width*1 EN1/2 TENH Minimum EN pulse HIGH-level width 3.0 – – µs TENL Minimum EN pulse LOW-level width 3.0 – – µs Hold time EN1/2 TCEH Time from when EN1 = EN2 = LOW until LED drive circuit shutdown 1.17 1.37 1.63 ms Input voltage EN1/2, SEL1/2 VIH HIGH-level input voltage range 1.8 – – V VIL LOW-level input voltage range – – 0.6 V Input current EN1/2 IIH Pull-down pin, EN pin = 3.6V – 5.0 10.0 µA |
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