Semiconductor Group

1

TCA 785

This phase control IC is intended to control thyristors, triacs, and transistors. The trigger pulses

can be shifted within a phase angle between 0 ˚ and 180 ˚. Typical applications include

converter circuits, AC controllers and three-phase current controllers.

This IC replaces the previous types TCA 780 and TCA 780 D.

(top view)

Pin Configuration

Phase Control IC

TCA 785

Bipolar IC

Features

q

Reliable recognition of zero passage

q

Large application scope

q

May be used as zero point switch

q

LSL compatible

q

Three-phase operation possible (3 ICs)

q

Output current 250 mA

q

Large ramp current range

q

Wide temperature range

P-DIP-16-1

Type

Ordering Code

Package

TCA 785

Q67000-A2321

P-DIP-16-1

Pin

Symbol

Function

1

GND

Ground

2

3

4

Q2

Q U

Q2

Output 2 inverted

Output U

Output 1 inverted

5

Synchronous voltage

6

7

I

Q Z

Inhibit

Output Z

8

Stabilized voltage

9

10

Ramp resistance

Ramp capacitance

11

Control voltage

12

Pulse extension

13

L

Long pulse

14

15

Q 1

Q 2

Output 1

Output 2

16

Supply voltage

Pin Definitions and Functions

09.94