SG140A/SG140
POSITIVE FIXED VOLTAGE REGULATOR
DESCRIPTION
The SG140A/140 series of positive regulators offer self contained, fixed-voltage
capability with up to 1.5A of load current and input voltage up to 50V (SG140A series
only).
These units feature a unique on-chip trimming system to set the output voltages to
within
±1.5%
of nominal on the SG140A series and
±2.0%
on the SG140 series. The
SG140A versions also offer much improved line and load regulation characteristics.
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.
All protective features of thermal shutdown, current limiting, and safe-area control have
been designed into these units and since these regulators require only a small output
capacitor for satisfactory performance, ease of application is assured.
Although designed as fixed-voltage regulators, the output voltage can be increased
through the use of a simple voltage divider. The low quiescent drain current of the
device insures good regulation when this method is used.
Product is available in hermetically sealed TO-257 (isolated), TO-3, TO-66, and
TO-39 power packages.
FEATURES
•
Output voltage set internally to
±
1.5% on SG140A
•
Input voltage reange to 50V max.
on SG140A
•
Two volt input-output differential
•
Bandgap reference voltage
•
Excellent line and load regulation
•
Foldback current limiting
•
Thermal overload protection
•
Voltages available - 5V, 12V, 15V
•
Voltages Not Recommended For
New Designs - 6V, 8V, 18V, 24V
HIGH RELIABILITY FEATURES
- SG140A/140
♦
Available to MIL-STD - 883
♦
Radiation data available
♦
LMI level "S" processing available
SCHEMATIC DIAGRAM
2/90 Rev 1.4 6/97
Copyright
1997
1
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX:
(714) 893-2570
L
INFINITY
Microelectronics Inc.
SG140A/SG140 SERIES
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Device
Output Voltage
5V
6V
8V
12V
15V
18V
24V
Input Voltage
35V
35V
35V
35V
35V
35V
40V
POSITIVE REGULATOR
Input Voltage
(transient)
(Note 3)
50V
50V
50V
50V
50V
50V
50V
Input Voltage Differential
(Output shorted to ground)
35V
35V
35V
35V
35V
35V
35V
Operating Junction Temperature
Hermetic (K, R, IG - Packages) ................................... 150°C
Note 1. Values beyond which damage may occur.
Storage Temperature Range ............................ -65°C to 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
T Package:
Thermal Resistance-
Junction to Case
,
θ
JC
.................. 15°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
............ 120°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
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 mounting
configuration. The
θ
JA
numbers are meant to be guide-
lines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
RECOMMENDED OPERATING CONDITIONS
(Note 2)
Operating Junction Temperature Range:
SG140A/140 .................................................. -55°C to 150°C
Note 2. Range over which the device is functional.
CHARACTERISTIC CURVES
Note 3. Operation at high input voltages is dependent upon load current. When
load current is less than 5mA, output will rise out of regulation as input-
oiutput differential icreases beyond 30V. Note also from Figure 1, that
maximum load current is reduced at high voltages. The 50V input rating
of the SG140A series refers to ability to withstnd high line or transient
conditions without damage. Since the regulator's maximum current
capability is reduced, the output may fall out of regulation at high input
voltages under nominal loading.
FIGURE 1.
PEAK OUTPUT CURRENT
VS. INPUT - OUTPUT DIFFERENTIAL
2/90 Rev 1.4 6/97
Copyright
1997
2
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX:
(714) 893-2570
L
INFINITY
Microelectronics Inc.
SG140A/SG140 SERIES
CHARACTERISTIC CURVES
(continued)
POSITIVE REGULATOR
FIGURE 2.
MINIMUM INPUT - OUTPUT VOLTAGE
VS. LOAD CURRENT
FIGURE 3.
RIPPLE REJECTION VS. FREQUENCY
FIGURE 4.
TEMPERATURE COEFFICIENT OF OUTPUT VOLTAGE
APPLICATIONS
FIGURE 5 - FIXED OUITPUT REGULATOR
FIGURE 6 - CIRCUIT FOR INCREASING OUITPUT VOLTAGE
FIGURE 7 - HIGH OUTPUT CIRRENT, SHORT CIRCUIT PROTECTED
FIGURE 8 - ADJUTABLE OUITPUT REGULATOR, 7V to 30V
2/90 Rev 1.4 6/97
Copyright
1997
3
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX:
(714) 893-2570
L
INFINITY
Microelectronics Inc.
SG140A/SG140 SERIES
ELECTRICAL CHARACTERISTICS
SG140A - 5
(Note 1)
5.0V POSITIVE REGULATOR
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG140A-05 with -55°C
≤
T
A
≤
150°C, V
IN
= 10V, I
O
= 1.0A, C
IN
= 0. 33µF, C
OUT
= 0.1µF and are applicable for the K, R, and IG - Power package - only. Low duty cycle pulse testing techniques are used
which maintains junction and case temperature equal to the ambient temperature.)
Parameter
Output Voltage
Line Regulation
(Note 1)
Test Conditions
I
O
= 5mA to 1.0A, T
J
= 25°C
V
IN
= 7.5V to 20V, I
O
= 500mA
V
IN
= 7.5V to 20V, T
J
= 25°C
V
IN
= 7.5V to 20V
V
IN
= 8V to 12V, T
J
= 25°C
I
O
= 5mA to 1.0A
I
O
= 5mA to 1.5A, T
J
= 25°C
I
O
= 250mA to 750mA, T
J
= 25°C
V
IN
= 7.5V to 20V, I
O
= 5mA to 1.0A, P
≤
15W
Over Temperature Range
T
J
= 25°C
With Line: V
IN
= 7.5V to 25V, I
O
= 500mA
V
IN
= 7.5V to 20V, I
O
= 1A, T
J
= 25°C
With Load: I
O
= 5mA to 1.0A
∆V
O
= 100mV, I
O
= 1A, T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
∆V
IN
= 10V, f = 120Hz, T
J
= 25°C
f = 10Hz to 100KHz
(Note 2)
1000hrs. at T
J
= 125°C
I
O
= 5mA
Load Regulation
(Note 1)
SG140A-5
Units
Min. Typ. Max.
4.9
5.0
5.1
V
10
mV
3
10
mV
12
mV
4
mV
25
mV
10
25
mV
15
mV
4.8
5.0
5.2
6.5
6
0.8
0.8
0.5
2.5
V
mA
mA
mA
mA
mA
V
A
A
dB
µV/V
mV
°C
Total Output Voltage
Tolerance
Quiescent Current
Quiescent Current Change
Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection
Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown
SG140 - 5
2
2.4
2.1
68
40
20
175
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG140-05 with -55°C
≤
T
A
≤
150°C, and V
IN
= 10V,
I
O
= 500mA, C
IN
= 0. 33µF, C
OUT
= 0.1µF and are applicable for the K, R, and IG - Power package - only. Low duty cycle pulse testing techniques are
used which maintains junction and case temperature equal to the ambient temperature.)
Parameter
Output Voltage
Line Regulation
(Note 1)
Test Conditions
I
O
= 5mA to 1.0A, T
J
= 25°C
V
IN
= 8V to 20V
V
IN
= 7V to 25V, T
J
= 25°C
V
IN
= 8V to 12V, I
O
= 1.0A
V
IN
= 7.3V to 20V, I
O
= 1.0A, T
J
= 25°C
I
O
= 5mA to 1.0A
I
O
= 5mA to 1.5A, T
J
= 25°C
I
O
= 250mA to 750mA, T
J
= 25°C
V
IN
= 8V to 20V, I
O
= 5mA to 1.0A, P
≤
15W
I
O
= 1.0A
T
J
= 25°C
With Line: V
IN
= 8V to 25V
V
IN
= 8V to 20V, I
O
= 1A, T
J
= 25°C
With Load: I
O
= 5mA to 1.0A
∆V
O
= 100mV, I
O
= 1A, T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
∆V
IN
= 10V, f = 120Hz, T
J
= 25°C
f = 10Hz to 100KHz
(Note 2)
1000hrs. at T
J
= 125°C
I
O
= 5mA
Load Regulation
(Note 1)
SG140-5
Units
Min. Typ. Max.
4.8
5.0
5.2
V
50
mV
mV
50
25
mV
50
mV
50
mV
50
mV
mV
25
4.75
5.00
5.25
7
6
0.8
0.8
0.5
2.5
V
mA
mA
mA
mA
mA
V
A
A
dB
µV/V
mV
°C
Total Output Voltage
Tolerance
Quiescent Current
Quiescent Current Change
Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection
Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown
2
2.4
2.1
68
40
20
175
Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing.
2. This test is guaranteed but is not tested in production.
2/90 Rev 1.4 6/97
Copyright
1997
4
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX:
(714) 893-2570
L
INFINITY
Microelectronics Inc.
SG140A/SG140 SERIES
ELECTRICAL CHARACTERISTICS
SG140 - 6
(Note 1)
6.0V & 8.0V POSITIVE REGULATOR
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG140-06 with -55°C
≤
T
A
≤
150°C, and V
IN
= 11V,
I
O
= 500mA, C
IN
= 0. 33µF, C
OUT
= 0.1µF and are applicable for the K, R, and IG - Power package - only. Low duty cycle pulse testing techniques are
used which maintains junction and case temperature equal to the ambient temperature.)
Parameter
Output Voltage
Line Regulation
(Note 1)
Test Conditions
I
O
= 5mA to 1.0A, T
J
= 25°C
V
IN
= 9V to 21V
V
IN
= 8V to 25V, T
J
= 25°C
V
IN
= 9V to 13V, I
O
= 1.0 A
V
IN
= 8.3V to 21V, I
O
= 1.0 A, T
J
= 25°C
I
O
= 5mA to 1.0A
I
O
= 5mA to 1.5A, T
J
= 25°C
I
O
= 250mA to 750mA, T
J
= 25°C
V
IN
= 9V to 21V, I
O
= 5mA to 1.0A, P
≤
15W
I
O
= 1.0 A
T
J
= 25°C
With Line: V
IN
= 9V to 25V
V
IN
= 9V to 21V, I
O
= 1A, T
J
= 25°C
With Load: I
O
= 5mA to 1.0A
∆V
O
= 100mV, I
O
= 1A, T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
∆V
IN
= 10V, f = 120Hz, T
J
= 25°C
f = 10Hz to 100KHz
(Note 2)
1000hrs. at T
J
= 125°C
I
O
= 5mA
Load Regulation
(Note 1)
SG140 - 6
Units
Min. Typ. Max.
5.75 6.00 6.25
V
60
mV
60
mV
30
mV
60
mV
60
mV
60
mV
30
mV
5.7
6.0
6.3
7
6
0.8
0.8
0.5
2.5
V
mA
mA
mA
mA
mA
V
A
A
dB
µV/V
mV
°C
Total Output Voltage
Tolerance
Quiescent Current
Quiescent Current Change
Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection
Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown
SG140 - 8
2
2.4
2.1
65
40
24
175
(Unless otherwise specified, these specifications apply over full operating ambient temperatures for SG140-08 with -55°C
≤
T
A
≤
150°C, and V
IN
= 14V,
I
O
= 500mA, C
IN
= 0. 33µF, C
OUT
= 0.1µF and are applicable for the K, R, and IG - Power package - only. Low duty cycle pulse testing techniques are
used which maintains junction and case temperature equal to the ambient temperature.)
Parameter
Output Voltage
Line Regulation
(Note 1)
Test Conditions
I
O
= 5mA to 1.0A, T
J
= 25°C
V
IN
= 11V to 23V
V
IN
= 10.5V to 25V, T
J
= 25°C
V
IN
= 11V to 17V, I
O
= 1.0A
V
IN
= 10.5V to 23V, I
O
= 1.0A, T
J
= 25°C
I
O
= 5mA to 1.0A
I
O
= 5mA to 1.5A, T
J
= 25°C
I
O
= 250mA to 750mA, T
J
= 25°C
V
IN
= 11.5V to 23V, I
O
= 5mA to 1.0A, P
≤
15W
I
O
= 1.0A
T
J
= 25°C
With Line: V
IN
= 11.5V to 25V
V
IN
= 11.5V to 23V, I
O
= 1A, T
J
= 25°C
With Load: I
O
= 5mA to 1.0A
∆V
O
= 100mV, I
O
= 1A, T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
∆V
IN
= 10V, f = 120Hz, T
J
= 25°C
f = 10Hz to 100KHz
(Note 2)
1000hrs. at T
J
= 125°C
I
O
= 5mA
Load Regulation
(Note 1)
SG140 - 8
Units
Min. Typ. Max.
7.7
8.0
8.3
V
80
mV
80
mV
40
mV
80
mV
80
mV
80
mV
40
mV
7.6
8.0
8.4
7
6
0.8
0.8
0.5
2.5
V
mA
mA
mA
mA
mA
V
A
A
dB
µV/V
mV
°C
Total Output Voltage
Tolerance
Quiescent Current
Quiescent Current Change
Dropout Voltage
Peak Output Current
Short Circuit Current
Ripple Rejection
Output Noise Voltage (rms)
Long Term Stability
Thermal Shutdown
2
2.4
2.1
62
40
32
175
Note 1. All regulation tests are made at constant junction temperature with low duty cycle testing.
2. This test is guaranteed but is not tested in production.
2/90 Rev 1.4 6/97
Copyright
1997
5
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX:
(714) 893-2570
L
INFINITY
Microelectronics Inc.
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