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PM8801 Datasheet(PDF) 14 Page - STMicroelectronics

Part # PM8801
Description  High-efficiency, IEEE 802.3at compliant, integrated PoE-PD interface and PWM controller
PDF  37 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM8801 Datasheet(HTML) 14 Page - STMicroelectronics

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Electrical specifications
PM8801
14/37
DocID018560 Rev 2
3.3
Electrical characteristics
VDD = 48 V, VC = not loaded, Cvc = 1 µF, VB = not loaded, Cvb =1 µF,
GAT1 and GAT2 = not loaded, TA = 25 °C unless otherwise specified.
Values in Bolded type apply over the full operating ambient temperature range.
Table 5. Electrical characteristics - interface section
Symbol
Parameter
Test conditions
Min
Typ
Max
Unit
Detection and Classification
Signature enable
VDD rising
1.5
V
Signature pull down
resistance
within signature range
150
350
Ω
Signature disable
VDD rising
10.3
10.8
11.3
V
Classification enable
VDD rising
11.3
12
12.7
V
Classification turn-off
VDD rising
21.5
23.0
24.5
V
Mark event threshold /
Classification turn-off
VDD falling
9
10
11
V
Classification reset
threshold
VDD falling
3
4
5
V
CLS voltage
within classification range with
44 mA load
1.3
1.4
1.5
V
CLS max current
capability
within classification range with CLS
pin grounded
50
65
80
mA
Bias current
Idd
VDD supply current
during detection
VDD = 8 V
10
μA
VDD supply current
during classification
900
1200
μA
VDD supply current
during mark event
500
800
1100
μA
Undervoltage lockout
VUVLO_R
UVLO release
VIN rising
34
35
36.5
V
VUVLO_F
UVLO lockout
VIN falling
30
31
32.5
V
UVLO hysteresis
3.5
4
4.5
V
Hot-swap MOSFET
RDSON
MOSFET resistance
0.45
1
Ω
Default inrush
current limit
125
140
155
mA
Default DC
current limit
590
640
690
mA



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