10

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R04

CPC7594

1.9 Protection Circuitry Electrical Specifications

Parameter

Conditions

Symbol

Minimum

Typical

Maximum

Unit

Protection Diode Bridge

Forward Voltage drop,

continuous current

(50/60 Hz)

Apply ± dc current limit of break

switches

-2.1

3.0

V

Forward Voltage drop,

surge current

Apply ± dynamic current limit of break

switches

-5-

Protection SCR

Surge current

-

-

-

-

*

A

Trigger current:

SCR activates, +25

 C

-

134

-mA

SCR activates, +85

 C87

Hold current: Current

through protection SCR

SCR remains active, +25

 C

-

250

-mA

SCR remains active, +85

 C

110

184

Gate trigger voltage

§

-

V

-

0.02

1.0

A

On-state voltage

0.5 A, t = 0.5

sV

-

-3

-V

2.0 A, t = 0.5

s-5

Temperature Shutdown Specifications

Shutdown activation

temperature

Not production tested - limits are

guaranteed by design and Quality

Control sampling audits.

110

125

150

C

Shutdown circuit

hysteresis

10

-

25

C

*Passes GR1089 and ITU-T K.20 with appropriate secondary protection in place.