SI2400-BSR Silicon Laboratories Inc, SI2400-BSR Datasheet - Page 85

• Manufacturer Part Number: SI2400-BSR
• Description: Telecom Line Management ICs CONTACT SILICON LABS FOR AVAILABILITY
• Manufacturer: Silicon Laboratories Inc
• Type: Integrated Global DAAr

Specifications of SI2400-BSR

• Product: Modem Chip
• Supply Voltage (min): 3 V
• Supply Current: 21 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A
Designs using the Si2400 pass all overcurrent and
overvoltage tests for UL1950 3rd Edition compliance
with a couple of considerations.
Figure 20 shows the designs that can pass the UL1950
overvoltage tests, as well as electromagnetic emissions.
The top schematic of Figure 20 shows the configuration
in which the ferrite beads (FB1, FB2) are on the
unprotected side of the sidactor (RV1). For this
configuration, the current rating of the ferrite beads
must be 6 A.
The bottom schematic of Figure 20 shows the
configuration in which the ferrite beads (FB1, FB2) are
PPENDIX
RV1
1000
1000
C—UL1950 3
Ω
Ω
C25
C24
@ 100 MHz, 200 m A
@ 100 MHz, 200 m A
Figure 20. Circuits that Pass all UL1950 Overvoltage Tests
FB1
FB2
C24
C25
RD
E
Note: In this configuration, C24 and C25 are used for
em issions testing.
DITION
RV1
Fuse/PTC
Rev. 1.3
1.25 A
on the protected side of the sidactor (RV1). For this
design, the ferrite beads can be rated at 200 mA.
In a cost-optimized design, it is important to remember
that compliance to UL1950 does not always require
overvoltage tests. It is best to plan ahead and know
which overvoltage tests will apply to your system.
System-level elements in the construction, such as fire
enclosure and spacing requirements, need to be
considered during the design stages. Consult with your
Professional Testing Agency during the design of the
product to determine which tests apply to your system.
75
75
Fuse/PTC
1.25 A
Ω
Ω
@ 100 MHz, 6A
@ 100 MHz, 6A
FB1
FB2
RING
RING
TIP
TIP
Si2400
85