MAX16948AGEE/V+, Дистанционная антенна, токочувствительный LDO/переключатель, AEC-Q100, 4.5В до 28В, QSOP-16

The MAX16948AGEE/V+ from Maxim Integrated Products is an automotive dual remote antenna current sense LDO/switch in 16 pin QSOP package. It is designed to operate with an input voltage range from 4.5V to 28V (45V load dump tolerant). The device provides phantom power over coax cable to remote radio frequency low noise amplifiers (LNAs) in automotive systems with a maximum current of 300mA per channel. The device also provides a fixed regulated output voltage of 8.5V or an adjustable 1V to 12.5V output voltage. It can also be configured as a switch. The device monitors the load current and provides an analogue output current proportional to sensed load current. Accurate internal current limits protect the input supply against both overcurrent and short circuit conditions. It features an open-drain error output for each channel to indicate to the microcontroller (µC) when a fault has occurred. It is used in remote LNA phantom power, automotive camera and sensor power applications.

• Automotive AEC-Q100 grade 2 qualified, operating temperature range from -40°C to +105°C
• Short to battery protection to latch off internal LDO/switch during a short to battery event
• Two independent active-low, high voltage compatible shutdown input
• 2-channel LDO/switch with precision adjustable current sense (up to 300mA per channel)
• High power supply rejection ratio (73dB), 1V feedback voltage
• On/off switching or regulation of phantom power under µC control
• Reverse current protection, no-load current sense offset of 2µA
• Load current monitoring to detect open-load/normal/short circuit conditions
• Open-drain error status signalling to µC, input overvoltage shutdown
• IN supply current in operation is 2.1mA and IN supply current in shutdown is 7µA

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