MAX16913/MAX16913A Remote Antenna Current-Sense Amplifier and Switches General Description Features The MAX16913/MAX16913A high-voltage high-side cur- Switch Phantom Power-On/-Off Under C Control rent-sense switches feature internal current limiting to Analog Current Measurement Output prevent system damage due to fault conditions. The Adjustable Current Limiting (340mA Maximum) MAX16913/MAX16913A input voltage range extends from 5V to 18V, making them ideal for providing phantom Detect Open-Load and Short-Circuit Conditions power to remote radio-frequency low-noise amplifiers Provide Open-Drain Fault Signals (SC and OL) (LNAs) in automotive applications. Overcurrent Blanking During Startup The MAX16913/MAX16913A monitor the load current Thermal Shutdown and provide an analog output voltage proportional to the AECQ100 Qualified (/V Versions Only) sensed load current. In addition to current sensing, accu- rate internal current-limiting circuitry protects the input -40C to +105C Operating Temperature Range supply against both overload and short-circuit conditions. Two open-drain fault indicator outputs notify the micro- Typical Application Circuits processor when a short circuit, an open-load condition, or a short-to-battery condition exists. For the MAX16913A, TO BATTERY PROTECTED the open-load threshold is externally adjustable using a INPUT LOAD (LNA) resistive divider. A fault-blanking feature enables the circuit to ignore IN SENS OUT momentary faults, such as those caused by the initial REF 3.3V TO 5V charging of a capacitive load when hot swapping, prevent- ing false alarms to the system. Built-in thermal-overload MAX16913 OLT protection turns off the switch when the die temperature exceeds +150C (min). The MAX16913/MAX16913A also feature a short-to-battery detection every time the internal SC switch turns on. These devices provide an active-high OL control input to put the devices in low-power shutdown SHDN AOUT TO ADC INPUT GND mode. The MAX16913/MAX16913A are available in the 16-pin QSOP package and operate over the -40C to +105C TO BATTERY PROTECTED temperature range. INPUT LOAD (LNA) Applications IN SENS OUT Remote LNA Phantom Power REF Automotive Safety and Infotainment 3.3V TO 5V MAX16913A OLT SC Pin Configuration, Functional Diagrams, and Ordering OL Information appear at end of data sheet. SHDN AOUT TO ADC INPUT GND 19-4186 Rev 1 8/15MAX16913/MAX16913A Remote Antenna Current-Sense Amplifier and Switches Absolute Maximum Ratings IN to GND ..............................................................-0.3V to +42V Continuous Power Dissipation (T = +70C) A OUT to GND ..........................................................-0.3V to +42V 16-Pin QSOP (derate 18.2mW/C above +70C) ..1454.5mW SENS to IN ...........................................................-0.3V to +0.3V Operating Temperature Range ......................... -40C to +105C SC, OL, SHDN, OLT, AOUT to GND ....................-0.3V to +6.0V Junction Temperature ....................................... -40C to +150C Current into Any Pin Except OUT and SENS ..................20mA Storage Temperature Range ............................ -65C to +150C Current into SENS and OUT ..........................................340mA Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. (Note 1) Package Thermal Characteristics Junction-to-Ambient Thermal Resistance ( ) ..............55C/W Junction-to-Case Thermal Resistance ( ) ....................25C/W JA JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = +9V to +18V, T = T = T to T , unless otherwise noted. Typical values are at T = +25C.) IN A J MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS GENERAL Operating Input Voltage Range V 5 18 V IN Quiescent Supply Current I V < 0.4V 0.6 1.2 mA CC SHDN Shutdown Supply Current I V > 1.7V, T = +25C 5 A SD SHDN A (V -V ) to V Gain Av V /(V -V ) 13 V/V IN SENS AOUT AOUT IN SENS AOUT Maximum Voltage (V -V ) > 300mV 4.3 V IN SENS AOUT Zero-Current Output Voltage (V -V ) = 0 340 400 460 mV IN SENS I = I , (V - V ) = 100mV 1.5 1.7 1.9 LOAD SC IN SENS AOUT Voltage V I = 2 x I , (V -V ) = 200mV 2.7 3 3.3 LOAD SC IN SENS AOUT Output Impedance Z 5 k AOUT Measured between SENS and OUT while Switch Dropout Voltage V 0.6 V D sourcing 100mA Thermal Shutdown Threshold T Temperature rising +150 164 C SHDN Thermal Shutdown Hysteresis T 15 C HYST Reference Output Voltage V 2.7 3 3.3 V REF Reference Output Impedance Z 5 k REF THRESHOLDS R = 1 (V = 0.66V for the SENSE OLT Open-Load Current Threshold I 10 20 30 mA OL MAX16913 only) Nominal Open-Load Threshold V (MAX16913A only) 10 50 mV OLR Setting Range Short-Circuit Voltage Threshold V R = 1 87 100 110 mV SC SENSE Voltage between IN and SENS V At current limit, V = 14V 173 200 225 mV LIM IN Overvoltage Shutdown Threshold V V rising 18 21 24 V OVLO IN Overcurrent Blanking Time t 100 200 ms BLANK Retry Time t 1500 3000 ms RETRY Maxim Integrated 2 www.maximintegrated.com