SC1633 Semtech Corporation, SC1633 Datasheet
SC1633
Related parts for SC1633
SC1633 Summary of contents
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... January 29, 1998 DESCRIPTION The SC1633 is a high efficiency step up DC-DC converter. Only four external components are required to deliver a fixed voltage of 3V, 3.3V, or 5V. Efficiency beyond 83% can be easily achieved at 70mA load with 2. input voltages. A logic-controlled shutdown mode is provided for power saving. Switch current limit can be programmed with a resistor ...
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... Shutdown Mode Current Shutdown Recovery Time Efficiency SC1633/SC1633-3 SC1633-5 Line Regulation SC1633 SC1633-3 SC1633-5 Load Regulation SC1633/SC1633-3 SC1633-5 Oscillator Frequency LBI Pin Trip Point LBO “On Resistance” SW “On Resistance” SC1633/SC1633-3 SC1633-5 SW Off Leakage Input Pin Bias Current Output Pin Leakage © ...
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... January 29, 1998 TYPICAL PERFORMANCE CHARACTERISTICS © 1997 SEMTECH CORP. LOW VOLTAGE STEP-UP DC-DC CONVERTER 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1633 ...
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... January 29, 1998 TYPICAL PERFORMANCE CHARACTERISTICS (cont.) APPLICATION EXAMPLES © 1997 SEMTECH CORP. LOW VOLTAGE STEP-UP DC-DC CONVERTER Figure 1. 3V Output Step-Up Converter 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1633 ...
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... January 29, 1998 APPLICATION EXAMPLES (cont.) Figure 3. 1-Cell Input 3V Output Step-Up Converter Figure 4. 4-Cell Input Step-Up/Step-Down Converter © 1997 SEMTECH CORP. LOW VOLTAGE STEP-UP DC-DC CONVERTER Figure 2. 5V Output Step-Up Converter 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1633 ...
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... January 29, 1998 APPLICATION EXAMPLES (cont.) Figure 5. 3-Cell Input 3V Output Step-Down Converter Figure 6. Boost-Drive 5V Output Step-Down Converter © 1997 SEMTECH CORP. LOW VOLTAGE STEP-UP DC-DC CONVERTER 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC1633 ...
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... LIM resistor to set the switch peak current. It serves to protect the IC and induc- tor, as well as to improve efficiency and output ripple. However, the supply capability of the SC1633 is limited by the current limit resistor (see typical performance characteristics). The I /SD pin should be shorted to V LIM limiting switch peak current is not required ...