MAX5980GTJ+T Maxim Integrated, MAX5980GTJ+T Datasheet - Page 19

• Manufacturer Part Number: MAX5980GTJ+T
• Description: Power Switch ICs - POE / LAN 0-16V Hot-Swap Controller
• Manufacturer: Maxim Integrated

Specifications of MAX5980GTJ+T

• Rohs: yes
• Number Of Switches: Quad
• Off Time (max): 0.1 ms
• Operating Supply Voltage: 32 V to 60 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Maximum Power Dissipation: 2758.6 mW
• Minimum Operating Temperature: - 40 C
• Operating Supply Current: 5 mA

Figure 2. Detection, 2-Event Classification, and Port Power-Up Sequence
V
pace when V
decrement for the t
repeated short-duration overcurrent conditions. When
the counter reaches the t
the port down and asserts the corresponding TCUT_
bit (R06h[3:0] and R07h[3:0], Table 10). For a continu-
ous overstress, a fault latches exactly after a period of
t
registers (Table 40). If a port is powered down due to
a current-limit condition, during normal operation, the
device asserts the corresponding ICV_ bit (R08h[7:4]
and R09h[7:4], Table 11)
After power-off due to an overcurrent fault, the t
timer is not immediately reset but starts decrementing
V
FAULT
-9.1V
RSENSE_
-18V
-54V
OUT_
-4V
0V
- V
AGND
. V
CUT
80ms
exceeds V
RSENSE_
is programmable through the ICUT_
FAULT
CUT
drops below V
FAULT
Quad, IEEE 802.3at/af PSE Controller
counter allows for detecting
and decreases at a slower
limit, the device powers
150ms
t
DET(1)
CUT
. A slower
FAULT
for Power-over-Ethernet
at the same slower pace. The device allows a port to be
powered on only when the t
feature sets an automatic duty-cycle protection to the
external MOSFET to avoid overheating.
The device features individual, port programmable high-
power settings. To enable the high-power configuration
for a port, set the corresponding HP_EN_ bit (R44h[3:0],
Table 38) to 1. By default, if AUTO = 1, the HP_EN_ bits
will be set to 1 automatically after a reset event. When
enabled, each port’s high-power settings can be indi-
vidually configured using the corresponding Port GPMD,
Port Overcurrent (ICUT), Port Current-Limit (ILIM_), and
Port High-Power Status registers (see the Register Map
and Description section, Tables 39–42).
150ms
t
DET(2)
t
CLASS(1)
19ms
9ms
FAULT
t
CLASS(2)
19ms
High-Power Mode
counter is at zero. This
9ms
19
t