SG109/SG309
5 -VOLT FIXED VOLTAGE REGULATORS
DESCRIPTION
The SG109/SG309 is a completely self-contained 5V regulator.
Designed to provide local regualtion at currents up to 1A for digital
logic cards, this device is available in the hermetic TO-3, TO-66, TO-
39 and hermetic and plastic TO-220.
A major feature of the SG109's design is its built-in protective
features which make it essentially blowout proof. These consist of
both current limiting to control the peak currents and thermal
shutdown to protect against excessive power dissipation. With the
only added component being a possible need for an input bypass
capacitor, this regulator becomes extremely easy to apply. Utilizing
an improved Bandgap reference design, problems have been
eliminated that are normally associated with the zener diode
references, such as drift in output voltage and large changes in the
line and load regulation.
FEATURES
•
•
•
•
•
•
Fully compatible with TTL and DTL
Output current in excess of 1A
Internal thermal overload protection
No additional external components
Bandgap reference voltage
Foldback current limiting
HIGH RELIABILITY FEATURES-SG109
♦
Available to MIL-STD-883
♦
MIL - M38510 / 10701BXA - JAN109T
♦
Radiation data available
♦
LMI level "S" processing available
SCHEMATIC
4/90 Rev 1.1 2/94
Copyright
©
1994
1
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
L
INFINITY
Microelectronics Inc.
SG109/SG309
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage ........................................................................ 35V
Power Dissipation ........................................... Internally Limited
Storage Temperature Range ............................. -65°C to 150°C
Note 1. Exceeding these ratings could cause damage to the device.
Operating Junction Temperature
Hermetic (K, R, T, IG-Packages) .................................. 150°C
Lead Temperature (Soldering, 10 Seconds) ................ 300°C
THERMAL DATA
K Package:
Thermal Resistance-
Junction to Case
,
θ
JC
................. 3.0°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
.............. 35°C/W
R Package:
Thermal Resistance-
Junction to Case
,
θ
JC
................. 5.0°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
.............. 40°C/W
IG Package:
Thermal Resistance-
Junction to Case
,
θ
JC
................. 3.5°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
.............. 42°C/W
T Package:
Thermal Resistance-
Junction to Case
,
θ
JC
.................. 15°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 2)
Input Voltage Range ............................................... 7.0V to 25V
Operating Junction Temperature Range
SG109 ............................................................ -55°C to 150°C
SG309 ............................................................... 0°C to 125°C
Note 2. Range over which the device is functional.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG109 with -55°C
≤
T
A
≤
150°C, SG309 with
0°C
≤
T
A
≤
125°C, and for V
IN
= 10V, I
OUT
= 500mA (K, R, and IG -Power Packages-) and I
OUT
= 100mA (T-package). Low duty cycle pulse testing techniques
are used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter
Output Voltage
Line Regulation
Load Regulation
Test Conditions
T
A
= 25°C
V
IN
= 7.1V to 25V, T
A
= 25°C
T
A
= 25°C
Power Pkgs: I
OUT
= 5mA to 1.5A
T-package: I
OUT
=5mA to 500mA
V
IN
= 7.4V to 25V
Power Pkgs: I
OUT
= 5mA to 1.0A,
P
≤
20W
T-package: I
OUT
=5mA to 200mA, P
≤
20W
V
IN
= 7.4V to 25V
With Line : V
IN
= 7.4V to 25V
With Load: Power Pkgs: I
OUT
= 5mA to 1.0A
T-package: I
OUT
=5mA to 200mA
f = 10Hz to 100KHz, T
A
= 25°C
T
A
= 25°C
SG109
SG309
Min. Typ. Max. Min. Typ. Max.
4.8 5.05 5.2
4.7 5.05 5.3
50
4.0
50
4.0
15
15
100
50
15
15
100
50
Units
V
mV
mV
mV
Total Output Voltage Tolerance
4.6
4.6
5.0
5.0
Quiescent Current
Quiescent Current Change
5.4
5.4
10
0.5
0.8
0.8
4.75
4.75
5.00
5.00
5.25
5.25
10
0.5
0.8
0.8
Output Noise Voltage
Long Term Stability
Ripple Rejection
40
10
50
50
40
20
V
V
mA
mA
mA
mA
µV
mV
dB
4/90 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.
SG109/SG309
APPLICATION CIRCUITS
FIGURE 1 - FIXED 5V REGULATOR
FIGURE 2 - ADJUSTABLE OUTPUT REGULATOR
CONNECTION DIAGRAMS & ORDERING INFORMATION
Package
3-TERMINAL TO-3
METAL CAN
K-PACKAGE
(See Notes Below)
Part No.
SG109K/883B
SG109K
SG309K
Ambient
Temperature Range
-55°C to 125°C
-55°C to 125°C
0°C to 70°C
Connection Diagram
V
IN
1
2
CASE IS GROUND
V
OUT
3-TERMINAL TO-66
METAL CAN
R-PACKAGE
SG109R/883B
SG109R
SG309R
-55°C to 125°C
-55°C to 125°C
0°C to 70°C
V
IN
1
2
CASE IS GROUND
V
OUT
3-PIN HERMETIC TO-257
IG-PACKAGE (Isolated)
SG109IG/883B
SG109IG
-55°C to 125°C
-55°C to 125°C
TAB
IS
GROUND
V
OUT
GROUND
V
IN
3-PIN TO-39 METAL CAN
T-PACKAGE
SG109T/883B
JAN109T
SG109T
SG309T
-55°C to 125°C
-55°C to 125°C
-55°C to 125°C
0°C to 70°C
V
IN
V
OUT
1
2
3
GROUND
Note 1. Contact factory for JAN and DESC product availability.
2. All parts are viewed from the top.
4/90 Rev 1.1 2/94
Copyright
©
1994
3. Product is also available in leadless chip carrier (LCC) and hermetic flat pack (F).
Contact factory for price and availability.
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
L
INFINITY
Microelectronics Inc.
3
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