Data SheetLT4423TYPICAL PERFORMANCE CHARACTERISTICS–15–1.0TA = +125°CTA = +25°CTA = –40°C–13–0.8–11–0.6))AA(µ(µI CCI SD–9–0.4–7–0.2TA = +125°CTA = +25°CTA = –40°C–50051015202530051015202530VIN (V)V 004 IN (V) 005 Figure 4. Supply Current to GND vs IN VoltageFigure 5. Supply Current to GND vs IN Voltage in Shutdown22.0INTA = 25°COUTIN = 28VIN = 4V1IN = 3.3V1.5IN = 2.5VIN = 1.9V) A (µ)01.0V(AETI RUIO-10.52IN2 THERMAL RELIEF-20–50–2502550751001250125250375500TEMPERATURE (°C)V 006 REG (mV) 007 Figure 6. Reverse Leakage Current vs TemperatureFigure 7. Load Current vs Forward Voltage Drop900100IN = 28VIN = 4VIN = 3.3VIN = 2.5V700IN = 1.9V))Ωs500(m(µVEONRt R30010010–50–2502550751001250255075100125150175200TEMPERATURE (°C) 008 OUT – IN (mV) 009 Figure 8. On-Resistance vs TemperatureFigure 9. Turn-Off Time vs Reverse Voltageanalog.com Rev. 0 6 of 18 Document Outline Features Applications General Description Simplified Application Diagram TABLE OF CONTENTS Revision History Specifications Absolute Maximum Ratings Pin Configurations and Function Descriptions Typical Performance Characteristics Block Diagram Theory of Operation Applications Information USB PD 3.0 and Back-Up Battery Supply Automatic Power Path Control 5V Power Ride-Through High-Voltage Load Switch with Load Sharing and Undervoltage Lockout Layout and Thermal Considerations Typical Applications High-Load Current Application Reverse Input Voltage Protection Related parts Outline Dimensions Ordering Guide