MAX20087
Dual/Quad Camera Power Protectors
Industry's Only ASIL-Grade Camera Protector with Integrated I2C-Based Diagnostics
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The MAX20086–MAX20089 dual/quad camera power protector ICs deliver up to 600mA load current to each of their four output channels. Each output is individually protected from short-to-battery, short-to-ground, and overcurrent conditions. The ICs operate from a 3V to 5.5V supply and with a 3V to 15V camera supply. The input-to-output voltage drop is only 110mV (typ) at 300mA.
The ICs provide an enable input and I2C interface to read the diagnostic status of the device. An on-board ADC enables reading of the current through each switch. The ASIL B- and ASIL D-compliant versions include support for reading an additional seven diagnostic measurements through the ADC, ensuring high-fault coverage.
The MAX20086–MAX20089 include overtemperature shutdown and overcurrent limiting on each output channel separately. All devices are designed to operate from -40°C to +125°C ambient temperature.
Design Solution: Provide a Safe Power Path from the Car Battery to Remote Cameras ›
Key Features
- Small Solution
- Up to Four 600mA Protection Switches
- 3V to 15V Input Supply
- 3V to 5.5V Device Supply
- 26V Short-to-Battery Isolation
- Adjustable Current Limit (100mA to 600mA)
- Parallel Multiple Channels for Higher Current
- Selectable I2C Addresses
- Small (4mm × 4mm) 20-Pin SW TQFN Package
- Precision
- ±8% Current-Limit Accuracy
- 0.5ms Soft-Start
- 0.25ms Soft-Shutdown
- 0.3µA Shutdown Current
- 110mV Drop at 300mA
- Designed for Safety Applications
- ASIL B/D Compliant
- Short to VBAT/GND Diagnostics
- Differential Output Over/Undervoltage Diagnostics
- Input Over/Undervoltage Diagnostics
- Individual 8-Bit Current, Output Voltage, and Supply Readings Over I2C
- Autoretry on Fault
- AEC-Q100, -40°C to +125°C
Applications/Uses
- Power-over-Coax for Radar and Camera Modules
- Surround-View Camera ECU
| Protocol | ASIL |
| # Channels | 1 2 3 4 |
| Functions | Switch |
| Normal Position | Closed |
| VSUPPLY (Single) (V) (min) | 3 |
| VSUPPLY (Single) (V) (max) | 15 |
| RON (Ω) (max) | 0.7 |
| Package/Pins | TQFN/20 |
| Budgetary Price (See Notes) | $1.46 @1k |
Technical Docs
| Data Sheet | Dual/Quad Camera Power Protectors | Jan 29, 2021 | |
| White Paper | Why Designing ICs from the Ground Up for Automotive Applications Matters | ||
| App Note | How to Use GMSL Line-Fault Detection for Power Over Coax |
Click any title below to view the detail page where available.
Balancing Power Supply Requirements in ADAS Applications
Regulate Car Battery Voltages for ADAS ApplicationsDescription
The MAX20087 evaluation kit (EV kit) demonstrates the full capabilities of the series of power-protector ICs. The EV kit can operate as a stand-alone protector, or can be connected to a controller through an I2C interface for advanced control and diagnostics. The IC populated by default on the EV kit is the MAX20087, which has four output channels and a full suite of diagnostics active for compatibility with ASIL-grade applications. The EV kit is compatible with all other variants in the series, which can be evaluated by replacing the existing IC (U1) with the desired one.
The EV kit allows for simultaneous and independent operation and evaluation of the four protected output power channels. The EV kit has built-in interfaces to operate the part without needing an external I2C controller, although one can be connected to evaluate digital control and expanded diagnostics.
View DetailsFeatures
- 400mΩ (typ) Input-to-Output Channel Resistance
- Automatic Shutdown and Retry on Output UV and OC Conditions Reduces IC Power Dissipation
- Channels Continuously Shut Off During Overvoltage Conditions to Protect the Rest of the System
- Capable of Basic Stand-Alone Operation or Advanced Control and Diagnostics Through I2C Interface
- Proven PCB Layout
- Fully Assembled and Tested
 | SIMULATION MODELS MAX20087 IBIS Model | Download |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
Parameters
| Protocol | ASIL |
| # Channels | 1 2 3 4 |
| Functions | Switch |
| Normal Position | Closed |
| VSUPPLY (Single) (V) (min) | 3 |
| VSUPPLY (Single) (V) (max) | 15 |
| RON (Ω) (max) | 0.7 |
| Package/Pins | TQFN/20 |
| Budgetary Price (See Notes) | $1.46 @1k |
Key Features
- Small Solution
- Up to Four 600mA Protection Switches
- 3V to 15V Input Supply
- 3V to 5.5V Device Supply
- 26V Short-to-Battery Isolation
- Adjustable Current Limit (100mA to 600mA)
- Parallel Multiple Channels for Higher Current
- Selectable I2C Addresses
- Small (4mm × 4mm) 20-Pin SW TQFN Package
- Precision
- ±8% Current-Limit Accuracy
- 0.5ms Soft-Start
- 0.25ms Soft-Shutdown
- 0.3µA Shutdown Current
- 110mV Drop at 300mA
- Designed for Safety Applications
- ASIL B/D Compliant
- Short to VBAT/GND Diagnostics
- Differential Output Over/Undervoltage Diagnostics
- Input Over/Undervoltage Diagnostics
- Individual 8-Bit Current, Output Voltage, and Supply Readings Over I2C
- Autoretry on Fault
- AEC-Q100, -40°C to +125°C
Applications/Uses
- Power-over-Coax for Radar and Camera Modules
- Surround-View Camera ECU
Description
The MAX20086–MAX20089 dual/quad camera power protector ICs deliver up to 600mA load current to each of their four output channels. Each output is individually protected from short-to-battery, short-to-ground, and overcurrent conditions. The ICs operate from a 3V to 5.5V supply and with a 3V to 15V camera supply. The input-to-output voltage drop is only 110mV (typ) at 300mA.
The ICs provide an enable input and I2C interface to read the diagnostic status of the device. An on-board ADC enables reading of the current through each switch. The ASIL B- and ASIL D-compliant versions include support for reading an additional seven diagnostic measurements through the ADC, ensuring high-fault coverage.
The MAX20086–MAX20089 include overtemperature shutdown and overcurrent limiting on each output channel separately. All devices are designed to operate from -40°C to +125°C ambient temperature.
Design Solution: Provide a Safe Power Path from the Car Battery to Remote Cameras ›
Technical Docs
| Data Sheet | Dual/Quad Camera Power Protectors | Jan 29, 2021 | |
| White Paper | Why Designing ICs from the Ground Up for Automotive Applications Matters | ||
| App Note | How to Use GMSL Line-Fault Detection for Power Over Coax |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
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