參數(shù)資料
型號: STHS4257L
廠商: 意法半導(dǎo)體
英文描述: IEEE 802.3af PoE Powered Device (PD) Interface Controller with Integrated Signature Resistor(集成識別電阻的IEEE802.3af PoE PD 接口控制器)
中文描述: IEEE 802.3af標準的PoE供電設(shè)備(PD)接口控制器,它集成簽名電阻(集成識別電阻的IEEE802.3af標準PoE電源接口控制器)
文件頁數(shù): 9/18頁
文件大小: 173K
代理商: STHS4257L
STHS4257A, STHS4257A1, STHS4257L, STHS4257L1
Summary description
9/18
Figure 5.
Block diagram (STHS4257A/L)
Figure 6.
Typical application circuit (STHS4257A/L) with a DC/DC converter
RS
ref
25k
Signature
Resistor
Power Good
Input
Current
Limit
Classification
Current Source
Control
Circuits
+
+
EN
EN
VIN
GND
AI12206c
PWRGD
1
2
3
4
8
7
6
5
ref
NC
NC
RCLASS
NC
VOUT
Power
MOSFET
100
k
Ω
5μF
(min)
100V
0.1μF
100V
SMAJ58A
RCLASS
VIN
48V from
power sourcing
equipment (PSE)
AI12207a
RCLASS
SHDN
~
~
+
+
+
3V
to logic
STHS4257A/L
Powered Device (PD)
Switching
Power
Supply
Diode
Bridge
VIN
DF01S
GND
VOUT
RTN
PWRGD
C1
C2
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