L121A.pdf 데이터시트 (총 8 페이지) - 파일 다운로드 L121A 데이타시트 다운로드

No Preview Available !

LINEAR INTEGRATED CIRCUIT
TRIAC/SCR BURST CONTROL
The L 121 A is a monolithic integrated circuit in 16-lead dual in-line plastic packa!je. It incorporates the
following functions:
AC supply 50/60 Hz
Zero-voltage detector
Ramp generator
Inhibition of casual firing pulses
Stabilization of the internal positive DC supply
High gain operational amplifier
Output short-circuit protection
The L 121A is intended for use as a burst controller in industrial and consumer applications.
ABSOLUTE MAXIMUM RATINGS
19
I Db ID2
V 14
V S- 12
V 10-12
V 1_2
V 3 -5
Ptot
Tstg
Top
AC Peak supply current
Input diodes peak current
Maximum voltage (pin 14)
Positive clamp voltage
Negative clamp voltage
Differential input voltage
Differential input voltage
Total power dissipation at Tamb = 85°C
Storage temperatu re
Operating junction temperature
60
1
20
15
15
±7
±8
800
-55 to 150
-25 to 150
mA
A
V
V
V
V
V
mW
°C
°C
ORDERING NUMBER: L 121AB
MECHANICAL DATA
Dimensions in mm
41 6/82

No Preview Available !

CONNECTION DIAGRAM (top view)
RAMP VOLTAGE
AMPLIFIER OUTPUT
NON INV. AMPLIF INPUT
DC REFERENCE VOLTAGE
INV. AMPLIFIER INPUT
STABILIZED DC SUPPLY
GATE PULSE OUTPUT
POSITIVE RECTIFIER SUPPLY
16 CURRENT GENERATOR
15 OUTPUT LOGIC CIRCUIT
14
ZERO LOW VOLTAGE
DETECTOR
GND
GND
CHOPPER
NEG. RECTIFIER SUPPLY
AC SUPPLY
5-3517 f1
BLOCK DIAGRAM
+---1
Ii
I[
.L
42
S-3518

No Preview Available !

:2:
e:(
a::
c,:,
e:(
o
52
l-
e:(
::w:2r::
~
43

No Preview Available !

TEST CIRCUIT
R1
lOOk
0.01 ,uF
C11-15
220,uF
15V
RS=6.8kO/7W
16 15
11
L 121A
10
rV 220V
10)JF
10V
C:1
10
kO
10
kO
20 220,uF
kO 15V
5·J5241 J
THERMAL DATA
Rth j-amb Thermal resistance junction-ambient
max 80
ELECTRICAL CHARACTERISTICS (Tamb= 25°C, refer to the test circuit unless otherwise
specified)
Parameter
Test conditions
Min. Typ. Max. Unit
VS- 12
V 10-12
VS-12
V 1O- 12
V 9- 12
Positive clamp voltage
Negative clamp voltage
External DC supply voltage
External DC supply voltage
Sync input threshold
10
10
10.5
-10.5
11.5
11.5
± 12.5
13
13
V
V
V
V
V
44

No Preview Available !

ELECTRICAL CHARACTERISTICS (continued)
Parameter
Test conditions
V 14-12
V l - 12
V l - 12
Vl -2
Minimum input voltage
Ramp discharge level
Maximum ramp level
Comparator differential trigger
level
ipin 9 open)
Gv Amplifier voltage gain
iopen loop)
V 2 ipeak to peak) ~ 6V
V 2- 13
V 2- 13
V 3- 13 •
VS-13
Ib
Max output voltage
Min output voltage
Input offset voltage
Input bias current
R3-13~ RS-13~ 50n
V 3- S
Differential input voltage
V 3- 13•
V S- 13
CMR
V 6- 13
16
/',V 6
~
/',V 6
/',V a
SVR
I nput voltage range
Common mode rejection
Regulator output voltage
Max regulator output current
Load regulation
Line regulation
Supply voltage rejection
V4
V 7- 12
Reference voltage
Firing pulse amplitude
17 Maximum output current
'w Output pulse width
Output pulse rise time
R3-13~ R S- 13 ..:; 1kn
16 ~ 0 to 3 mA
Va~12t014V 16 ~ 0
Va ~ 12V
friPPle~ 50 Hz
V ripple ipeak to peak)~ 4V
14 ~ 10'/LA
R7-12~ 1 kn
R7-12~ 10n
positive
negative
R7-12~ 50n
45
Min.
±2.5
5.2
60
7
0.5
8.3
3
4.5
8
80
Typ.
70
70
3
0.1
60
0.5
46
46
1.5
5.5
9.5
200
200
Max. Unit
V
1.2 V
V
100 mV
dB
V
0.9 V
6 mV
1 /LA
±7 V
7.5 V
dB
9.5 V
mA
2%
dB
dB
V
V
V
mA
/LS
ns