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Product Detailed Parameters
- Description：QUAD NETWORK POWER CONTROLLER
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Bulk
- Type：Controller (PSE)
- Number of Channels：4
- Power - Max：941 mW
- Internal Switch(s)：No
- Auxiliary Sense：No
- Standards：802.3af (PoE)
- Voltage - Supply：0V ~ 60V
- Current - Supply：4.2mA
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Package / Case：36-BSOP (0.295", 7.50mm Width)
- Supplier Device Package：36-SSOP
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Overview
The MAX5935CAX is a quad network power controller designed for IEEE 802.3af-compliant Power Sourcing Equipment (PSE). It controls four independent, -48V-powered Ethernet ports in either endpoint or midspan PSE applications. The device features a wide digital power input common-mode range from VEE to AGND + 7.7V. It integrates PD violation of class current protection and supports PD detection and classification functions.
Feature Summary
- IEEE 802.3af compliant operation for Power Sourcing Equipment
- Controls four independent powered Ethernet ports
- Supports both endpoint and midspan PSE configurations
- Integrated port detection and classification logic
Applications
- Midspan Power Sourcing Equipment designs
- Endpoint Power Sourcing Equipment implementations
- IEEE 802.3af compliant PoE system integration
Procurement Notes
Verify the specific suffix (e.g., CAX vs CAX+) against the manufacturer's official datasheet to confirm package type and lead-free status. Ensure the component matches the required pinout for your PCB layout. Cross-reference the manufacturer part number with Analog Devices documentation to avoid counterfeit components.
Selection Notes
Select this component when designing systems requiring control of four independent -48V Ethernet ports under IEEE 802.3af standards. It is suitable for applications needing integrated detection and classification without external microcontrollers. Verify that the 36-SSOP/BSOP package fits the thermal and spatial constraints of the target design.
Part Context
This component belongs to the Maxim Integrated (now Analog Devices) portfolio of Power over Ethernet controllers. It is functionally compatible with other quad-port PSE controllers like the LTC4259A. The device simplifies PoE implementation by integrating necessary protection and management logic into a single chip.
Replacement Considerations
The LTC4259A is documented as pin and function compatible with this device. Verify electrical specifications and package dimensions before substitution.
