MAX5984 MAXIM [Maxim Integrated Products], MAX5984 Datasheet
MAX5984
Related parts for MAX5984
MAX5984 Summary of contents
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... MOSFET and sense resistor. The device also supports new Class 5 and 2-Event classification for detection and classification of high-power PDs. The MAX5984 provides up to 40W to a single port (Class 5 enabled) and still provides high- capacitance detection for legacy PDs. ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET ABSOLUTE MAXIMUM RATINGS (Voltages referenced unless otherwise noted.) EE AGND, DET, LED ..................................................-0.3V to +80V OUT ......................................................-0. OUTP .......................................................- EE_DIG ...............................................................-0.3V to +0.3V ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET ELECTRICAL CHARACTERISTICS (continued 32V to 60V -40NC to +85NC, all voltages are referenced to V AGND 54V ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET ELECTRICAL CHARACTERISTICS (continued 32V to 60V -40NC to +85NC, all voltages are referenced to V AGND 54V ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET ELECTRICAL CHARACTERISTICS (continued 32V to 60V -40NC to +85NC, all voltages are referenced to V AGND 54V ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET (T = +25°C, unless otherwise noted.) A ANALOG SUPPLY CURRENT vs. INPUT VOLTAGE 2.7 MEASURED AT AGND 2.6 2.5 2.4 2 ...
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... OUT 20V/div 0V I OUT 100mA/div 0mA SHORT-CIRCUIT RESPONSE TIME MAX5984 toc09 V AGND 20V/div I OUT 200mA/div 20ms/div EN TO OUT TURN-OFF DELAY MAX5984 toc11 V AGND 20V/div I OUT 200mA/div V EN 5V/div 100µs/div ZERO-CURRENT DETECTION WAVEFORM WITH AC DISCONNECT ENABLED MAX5984 toc13 V AGND 20V/div ...
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... AGND OUT 5V/div 0V I OUT 0mA 1mA/div STARTUP WITH A VALID PD MAX5984 toc15 AGND 20V/div I OUT 100mA/div 100ms/div DETECTION WITH INVALID PD (15kΩ) MAX5984 toc16b AGND 5V/div I OUT 1mA/div 100ms/div MAX5984 toc16d AGND 5V/div I OUT 1mA/div 100ms/div OUT OUT ...
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... CLASSIFICATION WITH DIFFERENT PD CLASSES MAX5984 toc20a AGND OUT 10V/div 0V I OUT 10mA/div 0mA MAX5984 toc18a AGND OUT 5V/div I OUT 1mA/div 400ms/div MAX5984 toc19 AGND OUT 5V/div I OUT 1mA/div 40ms/div (4 AND 5) MAX5984 toc20b AGND OUT 10V/div CLASS 5 CLASS 4 I OUT 20mA/div ...
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... AGND LED 20V/div 0V MAX5984 toc22a AGND 10V/div I OUT 500mA/div AGND 20V/div 200ms/div MAX5984 toc23a AGND 50V/div I OUT 500mA/div AGND 20V/div 200ms/div LED PWM TIMING AND DUTY CYCLE MAX5984 toc24 AGND 50V/div I OUT 500mA/div ...
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... Leave unconnected to disable 2-Event classification. Force low to enable the 2-Event (MAX5984A/ classification. See the 2-Event PD Classification section for more details. Change status of this MAX5984B) bit only when the part is in reset state. The MAX5984C/MAX5984D are enabled. PWM Control Logic Input. Referenced to V PWMEN 6 Leave unconnected to enable the internal PWM to drive the LED pin ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET PIN NAME Detection Collision Avoidance Logic Input. Referenced the digital supply. Leave unconnected to activate the detection collision avoidance circuitry 7 MIDSPAN for midspan PSE systems. Force low ...
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... MOSFET and sense resistor. The device also supports new Class 5 and 2-event classification for detection and classification of high-power PDs. The MAX5984 provides up to 40W to a single port (Class 5 enabled) and still provides high-capacitance detection for legacy PDs. ______________________________________________________________________________________ ...
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... PD detection to the first quadrant as specified by the IEEE 802.3af/802.3at standard. To prevent damage to non-PD devices, and to protect itself from an output short circuit, the MAX5984 limits the current into DET to less than 2mA maximum during PD detection. In midspan mode, the MAX5984 waits at least 2.0s before attempting another detection cycle after every failed detection ...
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... IEEE 802.3at standard, forcing a -9.0V probing voltage at DET. The 2-Event function is disabled by default in the Class 1 MAX5984A/MAX5984B/MAX5984E. However not pin-selectable in the MAX5984E. Class 2 When the MAX5984 enters a powered state, the t Class 3 and t DISC timed out, the device enters a normal powered condition, Class 4 allowing power delivery to the PD ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET 80ms 0V -4V -9.3V -18V -48V V OUT Figure 1. Detection, Classification, and Port Power-Up Sequence 80ms 0V -4V -9.3V -18V -48V V OUT Figure 2. Detection, 2-Event Classification, and Port ...
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... EE After a power-off due to an overcurrent fault, the t timer is not immediately reset but starts decrementing. ) never exceeds the The MAX5984 allows the port to be powered on only , an internal LIM when the t an automatic port power duty-cycle protection to the internal MOSFET to avoid overheating. ...
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... If the port is not powered or is disconnected, the LED will be off. (the cur- RSENSE For two other conditions, the MAX5984 blinks a code to , the device turns communicate the port status. A series of two flashes indi- cates an overcurrent fault occurred during port power-on, and has a timing characteristic detailed by Figure 4. A ...
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... Place the input bypass capacitance and the output bypass capacitor (0.1µF ceramic capacitor from AGND to OUTP) as close as possible to the MAX5984. 2) Use large SMT component pads for power dissipat- ing devices such as the MAX5984 and the external diodes in the high-power path. ...
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... ILIM1 MIDSPAN ILIM2 OSC PWMEN 0.1µF 47µF 0.1µF 0.1µF SMJ58A 100V 100V 100V AGND V EE OUT V OUTP EE_DIG EN MAX5984A/B/D 1N4448 1nF LED 2-EVENT/ DET LSCEN LEGACY ILIM1 MIDSPAN ILIM2 OSC 0.1µF 2.2MI 100V PSE OUTPUT S1B 0.47FF 1N4448 100V 1kI 1kI ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ Package Information For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code ...
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Single-Port, 40W, IEEE 802.3af/802.3at PSE Controller with Integrated MOSFET REVISION REVISION NUMBER DATE 0 12/11 Initial release Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are ...