MAX16948

PRODUCTION

Automotive Dual Remote Antenna Current-Sense LDO/Switch

Dual Antenna Phantom Supply Provides Diagnostics for Multiband Antenna Systems

Data Sheet (Rev. 2) Product Selection Table

Part Models: 5
1ku List Price: Starting From $4.43

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Overview

2-Channel LDO/Switch with Precision-Adjustable Current-Sense (Up to 300mA Per Channel)
Wide Input Voltage Range: 4.5V to 28V (45V Load Dump Tolerant)
On/Off Switching or Regulation of Phantom Power Under µC Control
Reverse Current Protection
Output Short-to-Battery Protection
Load Current Monitoring to Detect Open-Load/Normal/Short-Circuit Conditions
Open-Drain Error Status Signaling to µC
Input Overvoltage Shutdown
High Power-Supply Rejection Ratio (73dB)

The MAX16948 is a dual high-voltage, current-sensing low dropout linear regulator (LDO)/switch 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. The device can also be configured as a switch.

The device monitors the load current and provides an analog output current proportional to the sensed load current. Accurate internal current limits protect the input supply against both overcurrent and short-circuit conditions. The device features an open-drain error output for each channel to indicate to the microcontroller (µC) when a fault has occurred.

The device features short-to-battery protection to latch off the internal LDO/switch during a short-to-battery event. During a thermal overload, the device reduces power dissipation by going into thermal shutdown. It includes two independent active-low, high-voltage-compatible shutdown inputs to place each channel in a low-power shutdown mode.

The device is available in a 16-pin TQFN package with exposed pad, a 16-pin QSOP package with exposed pad, or a 16-pin QSOP package and is fully specified over the -40°C to +105°C temperature range.

Applications

Automotive Camera and Sensor Power
Remote LNA Phantom Power

Part Models: 5
1ku List Price: Starting From $4.43

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX16948AGEE/V+	16-QSOP-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16948AGEE/V+T	16-QSOP-150_MIL	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16948AGTE/V+	16-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16948AGTE/V+CET	16-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16948AGTE/V+T	16-LFCSP-4X4X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Sep 8, 2021 - 2161B ASSEMBLY
		pcn_2161b
MAX16948AGTE/V+	PRODUCTION
MAX16948AGTE/V+T	PRODUCTION
Mar 28, 2018 - 1721C-1 ASSEMBLY
		pcn_1721c-1
MAX16948AGTE/V+	PRODUCTION
MAX16948AGTE/V+CET	PRODUCTION
MAX16948AGTE/V+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Current Sense Amplifiers 1
MAX16913	PRODUCTION	Remote Antenna Current-Sense Amplifier and Switches
Protection Switches & Controllers 1
MAX16946	PRODUCTION	Remote Antenna, Current-Sense and LDO/Switches

Evaluation Kits

Evaluation Kit for the MAX16948

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Features and Benefits

4.5V to 28V Wide Input Voltage Range (45V Load Dump Tolerant)
2-Channel LDO/Switch
Resistor-Adjustable Current-Limit Threshold
Current-Sensing Outputs
Open-Drain, Fault Indicator Outputs (Active-Low ERR1 and Active-Low ERR2)
Shutdown Control Inputs (Active-Low SHDN1 and Active-Low SHDN2)
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX16948 evaluation kit (EV kit) is an assembled and tested PCB used to evaluate the MAX16948 dual high-voltage, current-sensing LDO regulator/switch. The EV kit demonstrates the device's features: open-drain fault indicator outputs, current-limiting threshold-setting inputs, current-sense outputs, LDO/switch operation, and shutdown function.

Applications

Automotive Camera and Sensor Power
Remote LNA Phantom Power

Latest Discussions

1 Years Ago

Overview

Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 2