MAX5945EAX+ Maxim Integrated Products, MAX5945EAX+ Datasheet - Page 25

• Manufacturer Part Number: MAX5945EAX+
• Description: IC NETWORK PWR CTRL 36-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5945EAX+

• Controller Type: Network Power Controller
• Interface: I²C
• Voltage - Supply: 3.3V
• Current - Supply: 4.2mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 10. Startup Event Register
Table 11. Supply Event Register
Table 12. Port Status Registers
If the port remains in current limit or the PGOOD condi-
tion is not met at the end of the startup period, the port
shuts down and the corresponding STRT_FLT_ is set to
1. A 1 in any of the STRT_FLT_ bits forces R00h[6] to 1.
IVC_ is set to 1 whenever the port current exceeds the
ADDRESS = 0Ch, 0Dh, 0Eh, 0Fh
STRT_FLT4
STRT_FLT3
STRT_FLT2
STRT_FLT1
OSC_FAIL
V
V
SYMBOL
SYMBOL
SYMBOL
Reserved
Reserved
DET_ST_
V
V
V
V
DD_UVLO
CLASS_
EE_UVLO
IVC4
IVC3
IVC2
IVC1
DD_OV
DD_UV
EE_OV
EE_UV
TSD
ADDRESS =
ADDRESS =
BIT
BIT
______________________________________________________________________________________
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
BIT
7
6
5
4
3
2
1
0
R/W
0Ah
R/W
08h
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R
R
R
R
R
R
R
R
R/W
CoR
CoR
CoR
CoR
CoR
CoR
CoR
CoR
0Bh
R/W
CoR
CoR
CoR
CoR
CoR
CoR
CoR
CoR
09h
Reserved
CLASS_[2]
CLASS_[1]
CLASS_[0]
Reserved
DET_[2]
DET_[1]
DET_[0]
DESCRIPTION
Quad Network Power Controller
Class overcurrent flag for port 4
Class overcurrent flag for port 3
Class overcurrent flag for port 2
Class overcurrent flag for port 1
Startup failed on port 4
Startup failed on port 3
Startup failed on port 2
Startup failed on port 1
Overtemperature shutdown
V
V
V
V
V
Oscillator amplitude is below limit
V
DD
DD
EE
EE
EE
DD
undervoltage lockout condition
overvoltage condition
undervoltage condition
overvoltage condition
undervoltage condition
undervoltage lockout condition
maximum allowed limit for the class (determined during
the classification process). A 1 in any of IVC_ forces
R00h[6] to 1. When the CL_DISC (R17h[2]) is set to 1,
the port will also limit the load current according to its
class as specified in the Electrical Characteristics
table. As with any other events register, the startup
event register (Table 10) has two addresses. When
read through the R08h address, the content of the reg-
ister is left unchanged. When read through the CoR
R09h address, the register content will be cleared. A
reset sets R08h/R09h = 00h.
The MAX5945 continuously monitors the power supplies
and sets the appropriate bits in the supply event register
(Table 11). V
V
is set to 1 whenever V
age threshold.
OSC_FAIL is set to 1 whenever the amplitude of the
oscillator signal at the OSC_input falls below a level
that might compromise the AC disconnect detection
EE
exceeds its overvoltage threshold. V
for Power-Over-LAN
DESCRIPTION
DESCRIPTION
DD_OV
/ V
DD
EE_OV
/ V
EE
is set to 1 whenever V
falls below its undervolt-
DD_UV
/ V
EE_UV
DD
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