LS7540 参数 Datasheet PDF下载

FIGURE 6. TOUCH LAMP APPLICATION SCHEMATIC

#2

-V

LOAD

R1

D1

-

C1

AC

MAINS

Z1

MT2

MT1

T1

G

R6

C7

+

+

+V

R7

C2

8

7

6

RAMP

R5

5

CONT

-

C6

TRIG/

V

SS

C8*

(SEE NOTE 2)

LS7540

CLOCK SYNC

V

DD

TOUCH

R2

1

2

3

4

R4

D2

D3

TOUCH

PLATE

(LAMP BODY)

C3

C4

R3

The Figure 6 Application Schematic functions identically to that shown in Figure 5 with one less component.

Referencing Triac T1 to the +V power supply of the IC eliminates the need to AC couple the TRIAC/ pulse

to the Triac Gate thereby eliminating component C5.

7540-060906-5