LTC4263_15 Datasheet, PDF (9/24 Pages) Linear Technology – Single IEEE 802.3af Compliant PSE Controller with Internal Switch

BLOCK DIAGRAM
R_LED
14
V_DD5
+
1
48V
LED
–
TO OTHER LTC4263s
+
5V
–
4
PWRMGT
C_PM
R_PM
5
6
V_SS
0.1μF
7
OSC
LTC4263
V_DD5
INT5 EXT5
5V REG
4
V_DD48
11
12 SD
13 ENFCLS
2 LEGACY
3 MIDSPAN
CONTROL
500k
I_DET
HOT SWAP
1A
0.1μF
TO PORT
MAGNETICS
SMAJ58A
500k
9
10
OUT
1k
8
ACOUT
0.47μF
BOLD LINES INDICATE HIGH CURRENT
4263 BD
4263fe
9