MAX6746KA46+T Maxim Integrated, MAX6746KA46+T Datasheet - Page 4

• Manufacturer Part Number: MAX6746KA46+T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6746, MAX6747, MAX6748, MAX6749, MAX6750, MAX6751, MAX6752, MAX6753r

Specifications of MAX6746KA46+T

• Number Of Voltages Monitored: 1
• Monitored Voltage: 1.575 V to 5 V
• Undervoltage Threshold: 4.533 V
• Overvoltage Threshold: 4.718 V
• Output Type: Active Low, Push-Pull
• Manual Reset: Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 9.487 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23
• Chip Enable Signals: No
• Maximum Power Dissipation: 714 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Supply Current (typ): 5 uA
• Supply Voltage - Min: 1 V

ELECTRICAL CHARACTERISTICS (continued)
(V
V
Single-Port, 40W, IEEE 802.3af/802.3at PSE
Controller with Integrated MOSFET
4
AGND
Triangular Wave Peak-to-Peak
Voltage Amplitude
OSC Pullup/Pulldown Currents
ACD_EN Threshold
Load Disconnect Timer
DETECTION
Detection Probe Voltage
(First Phase)
Detection Probe Voltage
(Second Phase)
Current-Limit Protection
Short-Circuit Threshold
Open-Circuit Threshold
Resistor Detection Window
Resistor Rejection Window
CLASSIFICATION
Classification Probe Voltage
Current-Limit Protection
Classification Current
Thresholds
Mark Event Voltage
Mark Event Current Limit
AGND
______________________________________________________________________________________
- V
- V
EE
PARAMETER
EE
= 54V, T
= 32V to 60V, T
A
= +25NC. Currents are positive when entering the pin and negative otherwise.) (Note 2)
A
= -40NC to +85NC, all voltages are referenced to V
SYMBOL
V
I
AMP
I
MARK_LIM
D_OPEN
R
V
V
V
ACD_EN
R
I
I
V
t
I
ClLIM
DLIM
DBAD
MARK
DISC
DPH1
DPH2
V
OSC
I
DOK
DCP
CL
CL
TRW
Measured at DET, referred to AGND
Measured at OSC
V
disconnect
Time from I
disconnect active) or I
disconnect active) to gate shutdown
V
phase
V
detection phase
V
current through DET
If V
detection phase, a short circuit to AGND
is detected
First point measurement current threshold
for open condition
(Note 4)
Detection rejects lower values
Detection rejects higher values
V
V
measure current through DET
Classification
current
thresholds
between
classes
V
V
measure current through DET
OSC
AGND
AGND
DET
AGND
DET
AGND
DET
AGND
= V
= V
= V
- V
- V
- V
- V
- V
EE
AGND
AGND
AGND
- V
DET
DET
DET
DET
RSENSE
> V
OUT
CONDITIONS
during the first detection
during the second
during classification
, during classification
during mark event
, during mark event
Class 0, Class 1
Class 1, Class 2
Class 2, Class 3
Class 3, Class 4
Class 4 upper limit (Note 5)
ACD_EN
during detection, measure
< V
< I
DCP
DCTH
DET
to activate AC
after the first
< I
(DC
ACTH
EE
, unless otherwise noted. Typical values are at
(AC
3.85
1.50
13.0
MIN
270
300
3.8
5.5
26
19
32
16
65
21
31
45
55
9
8
TYP
1.75
14.5
330
9.3
6.5
32
23
33
48
4
4
1
8
MAX
2.00
26.5
15.5
16.0
380
400
4.2
4.2
9.6
7.5
39
20
80
25
35
51
10
80
UNITS
mV
mA
mA
mA
mA
ms
kI
kI
FA
FA
V
V
V
V
V
V