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MIC5158BN Datasheet(PDF) 6 Page - Micrel Semiconductor |
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MIC5158BN Datasheet(HTML) 6 Page - Micrel Semiconductor |
6 / 13 page MIC5156/5157/5158 Micrel, Inc. MIC5156/5157/5158 6 August 2005 Block Diagram MIC5156 EN Enable Shutdown 1.235V Bandgap Reference Internal Bias Error Amp 75mV 35mV GND S* (Source) 16.6V ILIMIT Comparator D (Drain) [ ILIMIT ] G (Gate) FLAG VP VDD VOUT Comparator 10k to all internal blocks EA‡ 17k† Regulated +3.3V Output +12V Input +5V Input +5V Input RS 3mΩ 0.1µF Q2 Q1 SMP60N03-10L Switched 5V Load 12k * fixed version only † 3.3V = 17k, 5V = 32k ‡ adjustable version only CL Block Diagram MIC5157 Block Diagram with External Components Fixed 3.3V Power Supply with 5.0V Load Switch Block Diagram with External Components Fixed 3.3V 10A Power Supply 1.235V Bandgap Reference VCP Clamp Internal Bias Error Amp 75mV 35mV GND S (Source)* ILIMIT Comparator D (Drain) [ ILIMIT] G (Gate) VCP VDD VOUT Comparator to all internal blocks 3.3V Regulated +3.3V Output +5V Input Q1 IRFZ44 RS 3mΩ 1µF 16.6V 10k 58k 15k 17k 5V Oscillator Charge Pump Tripler C1+ C1– C2+ C2– 0.1µF 0.1µF C1 C2 C3 FLAG EN Enable Shutdown CL |
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