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參數(shù)資料
| 型號： | STHS2377L |
| 廠商： | 意法半導體 |
| 英文描述： | IEEE 802.3af PoE Powered Device (PD) Interface Controller(IEEE802.3af PoE PD(受電設備)接口控制器) |
| 中文描述： | IEEE 802.3af標準的PoE供電設備（PD）接口控制器（IEEE802.3af標準的PoE（私隱受電設備）接口控制器） |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 187K |
| 代理商： | STHS2377L |
Electrical parameters STHS237xA, STHS237xL
STHS237x
12/20
3
Electrical parameters STHS237xA, STHS237xL
Specifications common for all the STHS237xA/L product family unless otherwise
noted
.
V
DD
= 48V, R
DET
= 24.9k
Ω
, R
CLASS
= 255
Ω
, R
ILIM
= 178k
Ω
, T
J
=
–
40 to 125°C, unless
otherwise noted, typical values at 25°C. For the STHS2376x V
UVLO
= 0V for classification
and V
UVLO
= 5V otherwise. Voltages are referenced to the V
SS
pin unless otherwise noted.
Positive currents are into pins.
Table 5.
Electrical parameters
Symbol
Parameter
Test conditions
Min
Typ
Max
Units
Recommended operating conditions
Input voltage range
V
DD
, PG, RTN
0
57
V
UVLO
0
5
V
I
RTN
Operating current
range (sinking)
RTN
0
450
mA
R
CLASS
Classification
resistor
(1)
,
(2)
1.
Classification tested with exact resistor values. A 1% tolerance of classification resistor values is sufficient
for compliance with IEEE 802.3af classification current limits.
2.
Do not apply external voltage to the CLASS and I
LIM
pins.
CLASS
255
4420
Ω
R
ILIM
Inrush current limit
programming
resistor
(2)
62.5
500
k
Ω
I
PG(SINK)
Sinking current
PG = low
0
10
mA
T
J
Operating junction
temperature
–40
125
°C
T
A
Operating free-air
temperature
–40
85
°C
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