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EL7583 Datasheet(PDF) 4 Page - Intersil Corporation |
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EL7583 Datasheet(HTML) 4 Page - Intersil Corporation |
4 / 15 page Pin Descriptions I = Input, O = Output, S = Supply PIN NUMBER PIN NAME PIN TYPE PIN FUNCTION 1 VSSB S Ground for DC/DC boost and reference circuits; chip substrate 2 SS I Soft-start input; the capacitor connected to this pin sets the current limited start time 3 FBB I Voltage feedback input for boost circuit; determines boost output voltage, VBOOST 4 VDDB S Positive supply input for DC/DC boost circuits 5 LX O Boost regulator inductor drive connected to drain of internal NFET 6 LX O Boost regulator inductor drive connected to drain of internal NFET 7 LX O Boost regulator inductor drive connected to drain of internal NFET 8 DRVN O Driver output for the external generation of negative charge pump voltage, VOFF 9 VDDN S Positive supply for input for VOFF generator 10 FBN I Voltage feedback input to determine negative charge pump output, VOFF 11 VSSP S Negative supply pin for both the positive and negative charge pumps 12 FBP I Voltage feedback to determine positive charge pump output, VON 13 VDDP S Positive supply input for VON generator 14 DRVP O Voltage driver output for the external generation of positive charge pump, VON 15 PGND O Power ground, connected to source of internal NFET 16 PGND O Power ground, connected to source of internal NFET 17 VREF I Voltage reference for charge pump circuits; decouple to ground 18 ENBN I Enable pin for boost (VBOOST generation) and negative charge pump (VOFF generation); active high 19 ENP I Enable for DRVP (VON generation); active high 20 ROSC I Connected to an external resistor to ground; sets the switching frequency of the DC/DC boost 4 FN7335.3 February 4, 2005 EL7583 |
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