MAX6746KA46+T Maxim Integrated, MAX6746KA46+T Datasheet - Page 5

• 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
Note 2: This device is production tested at T
Note 3: If ILIM1 and ILIM2 are both unconnected, Class 5 detection is disabled. See the Class 5 PD Classification section and Table 3 for
Note 4: R
Note 5: If Class 5 is enabled, this is the classification current thresholds from Class 4 to Class 5.
AGND
DIGITAL INPUTS/OUTPUTS (Voltages referenced to V
Digital Input Low
Digital Input High
Internal Input Pullup Current
LED Output Low Voltage
LED Output Leakage
PWM Frequency
PWM Duty Cycle
TIMING
Startup Time
Fault Time
Detection Reset Time
Detection Time
Midspan Mode Detection Delay
Classification Time
Mark Event Time
V
Restart Timer
AGND
EEUVLO
- V
- V
details and settings.
DET during phase 1 and 2 of the detection, respectively.
DOK
EE
PARAMETER
EE
Turn-On Delay
Single-Port, 40W, IEEE 802.3af/802.3at PSE
= 54V, T
= 32V to 60V, T
= (V
OUT2
_______________________________________________________________________________________
A
= +25NC. Currents are positive when entering the pin and negative otherwise.) (Note 2)
- V
OUT1
A
= -40NC to +85NC, all voltages are referenced to V
)/(I
Controller with Integrated MOSFET
DET2
I
V
SYMBOL
LED_LEAK
t
RESTART
LED_LOW
t
t
t
t
CLASS
START
FAULT
t
DMID
t
V
t
V
I
DET
DLY
ME
PU
IH
IL
- I
DET1
A
= +25NC. Limits at T
). V
Pullup current to internal digital supply to
set default values
I
PWM disabled, shutdown mode,
V
Time during which a current limit set to
420mA is allowed, starts when power is
turned on
Maximum allowed time for an overcurrent
condition set by I
Time allowed for the port voltage to reset
before detection starts
Maximum time allowed before detection is
completed
Time allowed for classification
Time allowed for mark event
Time V
thresholds before the device operates
Time the device waits before turning on
after an overcurrent fault
LED
LED
OUT1
= 10mA, PWM disabled, port power-on
= 60V
AGND
, V
EE
OUT2
)
must be above the V
CONDITIONS
, I
DET2
CUT
A
= -40NC and T
after startup
, and I
DET1
EE
represent the voltage at OUT and the current at
EEUVLO
A
, unless otherwise noted. Typical values are at
= +85NC are guaranteed by design.
MIN
2.4
50
50
3
2
7
t
FAULT
TYP
6.25
16 x
2.2
5.2
25
60
60
80
19
5
9
MAX
330
0.8
0.8
2.4
10
70
70
90
23
11
7
UNITS
kHz
FA
FA
ms
ms
ms
ms
ms
ms
ms
ms
%
V
V
V
s
5