Micrel, Inc. MIC5159 Functional Diagram R V S IN VOUT IS GATE Buffer ISNS VOUT Amplifier S IN VREF VREF Enable EN GND Block Diagram – Fixed Output Voltages RS VIN VOUT IS GATE R1 Buffer ADJ. ISNS Amplifier S IN R2 VREF VREF Enable EN Block Diagram – Adjustable Output Voltages June 2006 6 M9999-062706