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ST1S31 Datasheet(PDF) 6 Page - STMicroelectronics |
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ST1S31 Datasheet(HTML) 6 Page - STMicroelectronics |
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6 / 35 page  Electrical characteristics ST1S31 6/35 DocID022998 Rev 4 3 Electrical characteristics TJ = 25 °C, VIN = 5 V, unless otherwise specified. Table 4. Electrical characteristics Symbol Parameter Test condition Values Unit Min. Typ. Max. VIN Operating input voltage range (1) 2.8 5.5 V VINON Turn-on VCC threshold (1) 2.4 VINOFF Turn-off VCC threshold (1) 2.0 RDSON-P High-side switch ON-resistance ISW = 300 mA 60 m RDSON-N Low-side switch ON-resistance ISW = 300 mA 45 m ILIM Maximum limiting current (2) 4.0 A Oscillator FSW Switching frequency 1.2 1.5 1.9 MHz DMAX Maximum duty cycle (2) 95 100 % Dynamic characteristics VFB Feedback voltage 0.792 0.8 0.808 V Io = 10 mA to 4 A(1) 0.776 0.8 0.824 %VOUT/ IOUT Reference load regulation Io = 10 mA to 4 A(2) 0.2 0.6 % %VOUT/ VIN Reference line regulation VIN = 2.8 V to 5.5 V(2) 0.2 0.3 % DC characteristics IQ Quiescent current Duty cycle = 0, no load VFB = 1.2 V 630 1200 µA IQST-BY Total standby quiescent current OFF 1 µA Enable VEN EN threshold voltage Device ON level 1.5 V Device OFF level 0.5 IEN EN current 0.1 µA Power Good PG PG threshold 92 %VFB PG hystereris 30 50 mV PG output voltage low Isink = 6 mA open drain 400 PG rise delay 170 µs |
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