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PM8801 Datasheet(PDF) 15 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) 15 Page - STMicroelectronics

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DocID018560 Rev 2
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PM8801
Electrical specifications
Inrush to DC current switchover
VDS required for inrush to
DC switchover
VDS falling - hot-swap MOSFET
closing
1.35
1.50
1.75
V
VGS required for inrush to
DC Switchover
VDS falling - hot-swap MOSFET
closing. Guaranteed by design.
2V
VDS required for inrush to
DC Switchover
VDS rising - hot-swap MOSFET
opening
11
12
13
V
LED
ILED
LED PWM current
amplitude
Sourced from LED pin
9
12
14
mA
VfLED_MAX
LED maximum forward
voltage
4.5
V
fLED
LED PWM current
frequency
250
Hz
Maintain Power Signature
IddMPS
MPS current
including VDD quiescent current
13
mA
TMPS
MPS current draw
duration
ENDC = 0 V
75
100
ms
TMPDO
MPS current dropout
duration
ENDC = 0 V
200
250
ms
Wakeup from sleep mode
WKUP threshold
WKUP falling
1.3
1.4
1.5
V
WKUP pull-up current
450
μA
Table 6. Electrical characteristics - SMPS section
Symbol
Parameter
Test conditions
Min
Typ
Max
Unit
Oscillator
Fosc
Frequency accuracy
In the range 100 to 500 kHz
+/-10
%
Frequency
programmability
RFRS = 100 kΩ
220
245
270
kHz
RFRS = 47.5 kΩ
445
495
545
kHz
Frequency range
100
1000
kHz
FRS voltage
1.20
1.25
1.30
V
Delay time
GAT1 to GAT2 delay time
RDT = 20 kΩ, GAT1and GAT2 open
32
ns
RDT = 200 kΩ, GAT1and GAT2
open
320
ns
DT voltage
1.20
1.25
1.30
V
Table 5. Electrical characteristics - interface section (continued)
Symbol
Parameter
Test conditions
Min
Typ
Max
Unit



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