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MAX16913 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX16913 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 12 page  General Description The MAX16913/MAX16913A high-voltage high-side cur- rent-sense switches feature internal current limiting to prevent system damage due to fault conditions. The MAX16913/MAX16913A input voltage range extends from 5V to 18V, making them ideal for providing phantom power to remote radio-frequency low-noise amplifiers (LNAs) in automotive applications. The MAX16913/MAX16913A monitor the load current and provide an analog output voltage proportional to the sensed load current. In addition to current sensing, accu- rate internal current-limiting circuitry protects the input supply against both overload and short-circuit conditions. Two open-drain fault indicator outputs notify the micro- processor when a short circuit, an open-load condition, or a short-to-battery condition exists. For the MAX16913A, the open-load threshold is externally adjustable using a resistive divider. A fault-blanking feature enables the circuit to ignore momentary faults, such as those caused by the initial charging of a capacitive load when hot swapping, prevent- ing false alarms to the system. Built-in thermal-overload protection turns off the switch when the die temperature exceeds +150°C (min). The MAX16913/MAX16913A also feature a short-to-battery detection every time the internal switch turns on. These devices provide an active-high control input to put the devices in low-power shutdown mode. The MAX16913/MAX16913A are available in the 16-pin QSOP package and operate over the -40°C to +105°C temperature range. Applications ● Remote LNA Phantom Power ● Automotive Safety and Infotainment Features ● Switch Phantom Power-On/-Off Under μC Control ● Analog Current Measurement Output ● Adjustable Current Limiting (340mA Maximum) ● Detect Open-Load and Short-Circuit Conditions ● Provide Open-Drain Fault Signals (SC and OL) ● Overcurrent Blanking During Startup ● Thermal Shutdown ● AECQ100 Qualified (/V Versions Only) ● -40°C to +105°C Operating Temperature Range 19-4186; Rev 1; 8/15 Pin Configuration, Functional Diagrams, and Ordering Information appear at end of data sheet. MAX16913 SC OL GND OLT IN SHDN SENS BATTERY INPUT AOUT TO ADC INPUT OUT TO PROTECTED LOAD (LNA) 3.3V TO 5V MAX16913A REF REF SC OL GND OLT IN SHDN SENS BATTERY INPUT AOUT TO ADC INPUT OUT TO PROTECTED LOAD (LNA) 3.3V TO 5V MAX16913/MAX16913A Remote Antenna Current-Sense Amplifier and Switches Typical Application Circuits |
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