SG1543/SG2543/SG3543
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (+V
IN
)................................................. 40V
Sense Inputs ...................................................................... +V
IN
SCR Trigger Current
(Note 2)
......................................... 300mA
Indicator Output Voltage ..................................................... 40V
Indicator Output Sink Current ..........................................
Operating Junction Temperature
Hermetic (J, L Packages) ............................................
Plastic (N, DW Packages) ...........................................
Storage Temperature Range ............................ -65°C to
50mA
150°C
150°C
150°C
Note 1. Values beyond which damage may occur.
Note 2. At higher input voltages, a dissipation limiting resistor, R
G
, is required. See Figure 1.
THERMAL DATA
J Package:
Thermal Resistance-
Junction to Case
,
θ
JC
.................. 30°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
.............. 80°C/W
N Package:
Thermal Resistance-
Junction to Case
,
θ
JC
.................. 40°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
............. 65°C/W
DW Package:
Thermal Resistance-
Junction to Case
,
θ
JC
................... 40°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
............. 95°C/W
L Package:
Thermal Resistance-
Junction to Case
,
θ
JC
.................. 35°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
............ 120°C/W
Note A. Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JA
).
Note B. The above numbers for
θ
JC
are maximums for the limiting
thermal resistance of the package in a standard mount-
ing configuration. The
θ
JA
numbers are meant to be
guidelines for the thermal performance of the device/pc-
board system. All of the above assume no ambient
airflow.
RECOMMENDED OPERATING CONDITIONS
(Note
3)
Input Supply Voltage (+V
IN
) .................................... 4.7V to 40V
Current Limit Common Mode
Input Voltage Range ....................................... 0V to +V
IN
-3V
Reference Load Current ........................................... 0 to 10mA
Indicator Output Voltage ......................................... 4.7V to 40V
Indicator Output Current ........................................... 0 to 10mA
Delay Timing Capcitor
(Note 4)
..................................... 0 to 1µF
Operating Ambient Temperature Range
SG1543 ......................................................... -55°C to 125°C
SG2543 ........................................................... -25°C to 85°C
SG3543 .............................................................. 0°C to 70°C
Note 3: Range over which the device is functional.
Note 4. Larger value capacitor may be used with peak current limiting. See Figure 7.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG1543 with -55°C
≤
T
A
≤
125°C, SG2543 with
-25°C
≤
T
A
≤
85°C, SG3543 with 0°C
≤
T
A
≤
70°C, and +V
IN
= 10V. Indicator outputs have 2KΩ pull-up resistor. Low duty cycle testing techniques are
used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter
Supply Section
Input Voltage Range
Supply Current
Reference Section
Output Voltage
Line Regulation
Load Regulation
Short Circuit Current
Temperature Stability
Test Conditions
T
J
= 25°C to T
MAX
+V
IN
= 40V, Outputs open, T
J
= 25°C
T
J
= 25°C
+V
IN
= 5 to 30V
I
REF
= 0 to 10mA
V
REF
= 0V
SG1543/2543
SG3543
Units
Min. Typ. Max. Min. Typ. Max.
4.5
4.7
7
40
40
10
4.5
4.7
7
40
40
10
V
V
mA
V
V
mV
mV
mA
%/°C
2.48 2.50 2.52 2.45 2.50 2.55
2.60
2.45
2.55 2.40
1
5
1
5
10
1
10
1
40
12
25
40
12
25
.005
.005
11/91 Rev 1.1 2/94
Copyright
©
1994
2
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
L
INFINITY
Microelectronics Inc.
MICROSEMI [ MICROSEMI CORPORATION ]
