Datasheet > LCP22

LCP22

更新时间： 2023-12-20 18:45:52

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意法半导体 - STMICROELECTRONICS		/
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描述
振铃SLIC的保护IC

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LCP22 数据手册

LCP22

Protection IC for ringing SLICs

Datasheet − production data

Description

The LCP22 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.

62ꢀꢁꢂZLGH

LCP22 can be used to help equipment to meet

various standards such as UL1950, IEC 60950 /

CSAC22.2, UL1459 and TIA-968-A. LCP22

pinout and clearance is compatible with UL60950.

A Trisil ™ meets UL94 V0.

Features

•

Protection IC recommended for ringing SLICs

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

The LCP22 associated with Epcos PTC model

B59173C1130A151 is compliant with

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

tests).

Low gate triggering current: I = 5 mA max

Peak pulse current: I = 50 A (10/1000 µs)

Holding current: I = 150 mA min.

Figure 1. Functional diagram

Line (TIP or RING)

Applications

•

Dual battery supply voltage SLICs

Central office (CO)

Private branch exchange (PBX)

Digital loop carrier (DLC)

GND

Digital subscriber line access multiplexer

(DSLAM)

Line (RING or TIP)

•

Fiber in the loop (FITL)

Wireless local loop (WLL)

Hybrid fiber coax (HFC)

ISDN terminal adapter

Cable modem

Figure 2. Pin-out configuration

Line (TIP or RING)

GND

Line (RING or TIP)

TM: Trisil is a trademark of STMicroelectronics

October 2014

Doc ID025775 Rev 3

1/10

This is information on a product in full production.

www.st.com

12 3 4 5 6 7...10

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