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Automotive Dual-Antenna Power Supply with I2C Serial Interface

Dual-Antenna Phantom Supply Provides Diagnostics for Multiband Antenna Systems Programmable Through I2C

Product Details

Key Features

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 50
Current Limit (mA) (max) 300
# Power Switches 2
Fault Indicator Yes
Current Limit Accuracy (%) 5
Current Limit Set By Pin Select
Preset
RON (Ω) (typ) 1.65
VSUPPLY (V) (min) 4.5
VSUPPLY (V) (max) 28
Oper. Temp. (°C) -40 to +125
Package/Pins TQFN-CU/16
Budgetary
Price (See Notes)
1.73
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Simplified Block Diagram

Technical Docs

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 50
Current Limit (mA) (max) 300
# Power Switches 2
Fault Indicator Yes
Current Limit Accuracy (%) 5
Current Limit Set By Pin Select
Preset
RON (Ω) (typ) 1.65
VSUPPLY (V) (min) 4.5
VSUPPLY (V) (max) 28
Oper. Temp. (°C) -40 to +125
Package/Pins TQFN-CU/16
Budgetary
Price (See Notes)
1.73

Key Features

  • Wide Input Voltage Range: 4.5V to 28V (40V Load Dump Tolerant)
  • High Integration
    • Complete 2-Channel Solution with Linear Regulators and Diagnostics
    • I2C Control for Minimum Parts Count
  • Complete and Flexible Control
    • Regulator Output Voltage
    • Regulator Current Limit
    • Regulator Overcurrent Level
    • Individual Disable/Enable
  • Detailed Diagnostics
    • Output Current
    • Short-to-Ground/Battery
    • Overtemperature Warning
    • Thermal Shutdown
  • Compact, 4mm x 4mm, 16 TQFN, Optional Side-Wettable Package

Applications/Uses

  • Automotive Camera and Sensor Power
  • Automotive Microphone Power
  • Remote LNA Phantom Power

Description

The MAX20084B is a dual-antenna power supply with an I2C interface for diagnostics and control. The dual 270mA antenna supplies are linear regulators whose output voltage is set individually through I2C. Additionally, internal registers are used to set the current limit, open-load threshold, and other parameters.

An internal 8-bit ADC allows the channel current to be measured. The AOUT analog output can also be used with an external ADC to measure the output current on either channel.

The MAX20084B is available in two variants: the MAX20084BATEA/VY+ with both channels turned off by default after power-up, and the MAX20084BATEB/VY+ with channel 1 turned on by default after power-up.

The MAX20084B is available in a 4mm x 4mm, side-wettable TQFN package and operates over the -40°C to +125°C temperature range.

Simplified Block Diagram

MAX20084B: Simplified Block Diagram MAX20084B: Simplified Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.