© Semiconductor Components Industries, LLC, 2006

January, 2006 − Rev. 9

1

Publication Order Number:

UAA2016/D

UAA2016

Zero Voltage Switch

Power Controller

The UAA2016 is designed to drive triacs with the Zero Voltage

technique which allows RFI−free power regulation of resistive loads.

Operating directly on the AC power line, its main application is the

precision regulation of electrical heating systems such as panel heaters

or irons.

A built−in digital sawtooth waveform permits proportional

temperature regulation action over a

±1°C band around the set point.

For energy savings there is a programmable temperature reduction

function, and for security a sensor failsafe inhibits output pulses when

the sensor connection is broken. Preset temperature (i.e. defrost)

application is also possible. In applications where high hysteresis is

needed, its value can be adjusted up to 5

°C around the set point. All

these features are implemented with a very low external component

count.

Features

Figure 1. Representative Block Diagram

Sense Input

Sampling

Full Wave

Logic

+

−

1/2

Failsafe

Hysteresis

Adjust

4

3

4−Bit DAC

Temperature

Reduction

Voltage

Reference

Internal

Reference

+

1

+

5

Pulse

Amplifier

Supply

Voltage

+

Output

6

7

2

11−Bit Counter

(Sawtooth

Generator)

Sync

UAA2016

8

Synchronization

See detailed ordering and shipping information in the package

dimensions section on page 9 of this data sheet.

ORDERING INFORMATION

1

8

PDIP−8

P SUFFIX

CASE 626

1

8

SOIC−8

D SUFFIX

CASE 751

http://onsemi.com

ZERO VOLTAGE SWITCH

POWER CONTROLLER

3

PIN CONNECTIONS

4

8

7

6

5

2

Hys. Adj.

Sensor

Temp. Reduc.

Sync

Output

(Top View)

MARKING

DIAGRAMS

UAA2016P

AWL

YYWWG

x

= A or D

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

G,

G

= Pb−Free Package

(Note: Microdot may be in either location)

2016x

ALYW

G

1

8