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车规 ET9919B
General Description
ET9919B can disconnect the systems from its output pin(OUT) in case wrong input operating conditions are detected. It achieve wide input voltage range from 2.5V to 26V and reverse blocking voltage up to 36V. The inside reverse blocking FET prevents the leakage current from output side to input side when input power supply is removed. ET9919B has an internal 14.5V OUT over-voltage protect threshold voltage and thresholds can also be programmed by outside OVLO pin. High accuracy current indicator is set internally. Default 7.5A over current protection is also set inside. Enable control is available to cut off the energy path. ET9919B has internal Thermal-Shutdown Protection.
Features
4A continuous current capability
Typical RON is 38mΩ from input to output power path
VIN operating range from 2.5V to 26V
Internal reverse blocking FET up to 36V
Internal OUT over-voltage lockout is 14.5V typical
Programmable OVP through outside resistors connected to OVLO pin
Over-voltage protection response time is 70ns typical
+/- 4% High accuracy current indicator
Startup debounce time is 7.0ms typical
Internal thermal-shutdown protection
ESD protected: Human Body Model: JESD22-A114(All pins) ± 2KV
Applications
Smartphones, Tablet PC
Mobile Devices
Tablet PCs
Pin Configuration
Block Diagram
Application Circuits
