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SC1630CS Arkusz danych(PDF) 6 Page - Semtech Corporation |
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SC1630CS Arkusz danych(HTML) 6 Page - Semtech Corporation |
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6 / 8 page ![]() © 1997 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 LOW VOLTAGE MULTI-MODE DC-DC CONVERTER SC1630 January 30, 1998 TYPICAL APPLICATIONS (cont.) TYPICAL PERFORMANCE CHARACTERISTICS Step-Up Rechargeable Battery Charger Step-Up/Step-Down Rechargeable Battery Charger • Charging current =0.8A, Auto Cut-Off at 0.25% -Delta-V point and fault conditions (RIF sets the charging current). • VDD must be lower than VBAT. • Short circuit condition is protected with a 2A fuse. • Fast charge current =0.8A when VDD<VBAT, = (VDD-VBAT-0.5)/0.82 when VDD>VBAT. • Trickle charge current = 30mA (RIF sets fast charge current, RIT sets trickle charge current). • Typical efficiency = 75%. • With short circuit protection. |
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