SI3452 SILABS [Silicon Laboratories], SI3452 Datasheet - Page 28
![no-image](/images/no-image-200.jpg)
SI3452
Manufacturer Part Number
SI3452
Description
QUAD HIGH-VOLTAGE PORT CONTROLLER FOR POE AND POE+ PSES
Manufacturer
SILABS [Silicon Laboratories]
Datasheet
1.SI3452.pdf
(36 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI3452-B01-GM
Manufacturer:
SILICON
Quantity:
1 000
Company:
Part Number:
SI3452-B02-GM
Manufacturer:
AD
Quantity:
556
Part Number:
SI3452-B02-GM
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Company:
Part Number:
SI3452-B02-GMR
Manufacturer:
TI
Quantity:
1 001
Company:
Part Number:
SI3452A-B01-GM
Manufacturer:
SILICON
Quantity:
1 001
Company:
Part Number:
SI3452A-B01-GMR
Manufacturer:
SILICON
Quantity:
670
Part Number:
SI3452B-B02-GMR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Part Number:
SI3452C-B02-GM
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
Si3452/3
28
Pin #
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
GND34
VOUT3
VOUT2
GND12
DGND
Name
DET4
DET3
VEE3
VEE2
DET2
SDA
VDD
VDD
SCL
AD3
RST
AD3
AD2
AD2
AD1
AD0
AD0
AD1
NC
Digital input
No connect
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Ground
Ground
Ground
Supply
Supply
Supply
Supply
Table 25. Si3452/3 Pin Descriptions (Continued)
Type
Connection for port 4 detection, classification, and transient surge protection. This
pin is tied to VOUT4.
I
Ground supply for protection clamps. Short to AGND, GND12, DGND.
I
Do not connect (float).
Connection for port 3 detection and classification. See DET4 for detailed descrip-
tion.
+3.3 V (±10%) isolated supply. Short to VDD pin 30.
Port 3 power FET switch output. When on, provides a low impedance path to
VEE3.
Chip address bit 3 pin, read after reset. Address set with defined resistor dividers.
Pin also used for internal communications. Short to AD3 pin 24.
Driver 3 VEE supply. Short to VEE, VEE1/2/4.
Active low digital reset. Short to RST pin 38.
Chip address bit 3 pin, read after reset. Address set with a 10 k pull-up or pull-
down resistor. Also used for internal communications. Short to AD3 pin 21.
Chip address bit 2 pin, read after reset. Address set with a 10 k pull-up or pull-
down resistor. Also used for internal communications. Short to AD2 pin 26.
Chip address bit 2 pin, read after reset. Address set with a 10 k pull-up or pull-
down resistor. Also used for internal communications. Short to AD2 pin 25.
Chip address bit 1 pin, read after reset. Address set with a 10 k pull-up or pull-
down resistor. Also used for internal communications. Short to AD1 pin 36.
Chip address bit 0 pin, read after reset. Address set with a 10 k pull-up or pull-
down resistor. Also used for internal communications. Short to AD0 pin 34.
Digital ground reference. Short to AGND, GND12/34
+3.3 V isolated supply. Short to VDD pin 19.
Driver 2 VEE supply. Short to VEE, VEE1/3/4.
Port 2 power FET switch output. When on, provides a low impedance path to
VEE2.
Connection for port 2 detection and classification. See DET4 for detailed descrip-
tion.
Chip address bit 0 pin. See description for- and short to AD0 pin 28.
Ground supply for protection clamps. Short to AGND, GND34, DGND.
Chip address bit 1 pin. See description for- and short to AD1 pin 27.
2
2
C data pin
C clock pin
Rev. 1.0
Description