This is information on a product in full production.

March 2014

DocID17500 Rev 4

1/10

LCP12

Protection IC for ringing SLICs

Datasheet

Features

• Protection IC recommended for ringing SLICs

• Wide firing voltage range: -120 V to +120 V

Applications

• Dual battery supply voltage SLICs

• Central office (CO)

• Private branch exchange (PBX)

• Digital loop carrier (DLC)

• Digital subscriber line access multiplexer

(DSLAM)

• Fiber in the loop (FITL)

• Wireless local loop (WLL)

• Hybrid fiber coax (HFC)

• ISDN terminal adapter

• Cable modem

TM: Trisil is a trademark of STMicroelectronics

Description

The LCP12 has been developed to protect SLICs

operating on both negative and positive battery

supplies, as well as high voltage SLICs. It

provides crowbar mode protection for both TIP

and RING lines. The surge suppression is

assumed for each wire by two thyristor structures,

one dedicated to positive surges the second one

for negative surges. Both positive and negative

threshold levels are programmable by two gates.

LCP12 can be used to help equipment to meet

various standards such as UL1950, IEC 60950 /

CSAC22.2, UL1459 and TIA-968-A. LCP12

pinout and clearance is compatible with UL60950.

Resin meets UL94 V0.

LCP12 is UL497B approved - file: E136224.

The LCP12 associated with Epcos PTC model

B59173C1130A151 is compliant with

ITU TK20/K21 (4 kV lightning and AC power fault

tests).

Figure 1. Functional diagram

Figure 2. Pin-out configuration

SO-8 wide

LCP12

Gn

TIP

Gp

GND

RING

GND

TIP

RING

NC

NC

GND

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