SG78xxA/78xx
PRODUCT DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
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Copyright © 1997
Rev. 1.5, 2010-07-13
TM ® Positive Fixed Voltage Regulator
DESCRIPTION
The SG78xxA/SG78xx series of
positive regulators offer self contained,
fixed-voltage capability with up to 1.5A of
load current and input voltage up to 50V
(SG78xxA series only). These units
feature a unique on-chip trimming system
to set the output voltages to within ±1.5%
of nominal on the SG78xxA series, ±2.0%
on the SG78xx series. The SG78xxA
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
(both case grounded ‘G’ and isolated ‘IG’),
TO-3, TO-39 and LCC packages.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
Output Voltage Set Internally to
±1.5% on SG78xxA
Input Voltage Range to 50V max.
on SG78xxA
Two Volt Input-Output Differential
Excellent Line and Load Regulation
Foldback Current Limiting
Thermal Overload Protection
Voltages Available: 5V, 12V, 15V
Contact Factory for Other Voltage
Options
Available in Surface Mount
Package
HIGH RELIABILITY FEATURES
- SG78xxA/78xx
Available to MIL-STD – 883, ¶ 1.2.1
MIL-M38510/10702BXA - JAN7805T
MIL-M38510/10703BXA - JAN7812T
MIL-M38510/10704BXA - JAN7815T
MIL-M38510/10706BYA - JAN7805K
MIL-M38510/10707BYA - JAN7812K
MIL-M38510/10708BYA - JAN7815K
Radiation Data Available
MSC-AMSG level "S" Processing Available
Available to DSCC
– Standard Microcircuit Drawing (SMD)
PRODUCT HIGHLIGHT
SCHEMATIC DIAGRAM
*
* For normal operation the (V
OS) sense pin must be externally connected to the load.
S
SG
G7
78
8X
XX
X
SG78xxA/78xx
PRODUCT DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
WWW.Microsemi .COM
Copyright © 1997
Rev. 1.5, 2010-07-13
TM ® Positive Fixed Voltage Regulator
ABSOLUTE MAXIMUM RATINGS
Device Output Voltage Input Voltage Input Voltage
(Transient)(Note 3) Input Voltage Differential
(Output Shorted to Ground)
5V 35V 50V 35V
12V 35V 50V 35V
15V 35V 50V 35V
Operating Junction Temperature ......................................................................................................................................................... 150°C
Storage Temperature Range ................................................................................................................................................. -65°C to 150°C
Lead Temperature (Soldering 10 seconds) .......................................................................................................................................... 300°C
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of
specified terminal.
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-
output differential increases beyond 30V. Note also from figure 1, that maximum load current is reduced at high voltages. The 50V input rating of the
SG78xxA series refers to ability to withstand 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.
THERMAL DATA
K TO-3 3-Terminal Metal Can (Two pins and case)
THERMAL RESISTANCE-JUNCTION TO CASE, θJC 3.0°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJ
A
35°C/W
T TO-39 3-Pin Metal Can
THERMAL RESISTANCE-JUNCTION TO CASE, θJC 15°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJ
A
120°C/W
G TO-257 3-Pin Hermetic
THERMAL RESISTANCE-JUNCTION TO CASE, θJC 3.5°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJ
A
42°C/W
IG TO-257 3-Pin Hermetic (Isolated)
THERMAL RESISTANCE-JUNCTION TO CASE, θJC 4.0°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJ
A
42°C/W
L Leadless Chip Carrier 20-Pin Ceramic
THERMAL RESISTANCE-JUNCTION TO CASE, θJC 35°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJ
A
120°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJ
A
numbers are guidelines for the thermal perform ance of the device/pc-board system . All of the above assume no ambient airflow.
P
PA
AC
CK
KA
AG
GE
E
D
DA
AT
TA
A
SG78xxA/78xx
PRODUCT DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
WWW.Microsemi .COM
Copyright © 1997
Rev. 1.5, 2010-07-13
TM ® Positive Fixed Voltage Regulator
CHARACTERISTIC CURVES
Figure 1 – Peak Output Current vs.
Input – Output Differential
Figure 2 – Minimum Input – Output Voltage vs.
Load Current
Figure 3 – Ripple Rejection vs. Frequency
Figure 4 – Temperature Coefficient of Output Voltage
G
GR
RA
AP
PH
HS
S
SG78xxA/78xx
PRODUCT DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
WWW.Microsemi .COM
Copyright © 1997
Rev. 1.5, 2010-07-13
TM ® Positive Fixed Voltage Regulator
APPLICATIONS
Figure 5 – Fixed Output Regulator
Figure 6 – Circuit for Increasing Output Voltage
Figure 7 – High Output Current, Short Circuit Protected
Figure 8 – Adjustable Output Regulator, 7V to 30V
RECOMMENDED OPERATING CONDITIONS
Parameter SG78xx
/
78xxA Units
Min Typ Max
Operating Junction Temperature Range (Note 2) 55 150 °C
Note 2: Range over which the device is functional.
A
AP
PP
PL
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TI
IO
ON
NS
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SG78xxA/78xx
PRODUCT DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
WWW.Microsemi .COM
Copyright © 1997
Rev. 1.5, 2010-07-13
TM ® Positive Fixed Voltage Regulator
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG7805A / SG7805 with -55°C < TA <
125°C, VIN = 10V, IO = 500mA for the K, G and IG – Power Packages, IO = 100mA for the T and L packages, CIN = 0.33µF, and COUT =
0.1µF. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient
temperature.
Parameter Test Conditions SG7805A SG7805 Units
Min Typ Max Min Typ Max
Output Voltage TJ = 25°C 4.92 5.00 5.08 4.80 5.00 5.20 V
Line Regulation (Note 1) VIN = 7.5V to 20V, TJ = 25°C 5 25 5 25 mV
V
IN = 8V to 12V, TJ = 25°C 2 12 2 25 mV
Load Regulation (Note 1) Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C 15 50 15 50 mV
I
O = 250mA to 750mA, TJ = 25°C 5 25 5 25 mV
T – Pkg: IO = 5mA to 500mA, TJ = 250°C 5 25 20 25 mV
Total Output Voltage VIN = 8V to 20V
Tolerance Power Pkgs: IO = 5mA to 1.0A, P < 20W 4.85 5.00 5.15 4.65 5.00 5.35 V
T – Pkg: IO =5mA to 500mA, P < 20W 4.85 5.00 5.15 4.65 5.00 5.35 V
Quiescent Current Over Temperature Range 7 7 mA
T
J = 25°C 4 6 4 6 mA
Quiescent Current Change With Line: VIN = 8V to 25V 0.8 0.8 mA
With Load: IO = 5mA to 1.0A (Power Pkgs.) 0.5 0.5 mA
I
O = 5mA to 500mA (T) 0.5 0.5 mA
Dropout Voltage ∆VO = 100mV, TJ = 25°C
Power Pkgs: IO = 1.0A, T-Pkg: IO = 500mA 2 2.5 2 2.5 V
Peak Output Current Power Pkgs: VIN = 10V, TJ = 25°C 1.5 2.0 3.3 1.5 2.0 3.3 A
T – Pkg: VIN = 10V, TJ = 25°C 0.5 1.0 2.0 0.5 1.0 2.0 A
Short Circuit Current Power Pkgs: VIN = 35V, TJ = 25°C 1.2 1.2 A
T – Pkg: VIN = 35V, TJ = 25°C 0.7 0.7 A
Ripple Rejection ∆VIN = 10V, f = 120Hz, TJ = 25°C 68 68 dB
Output Noise Voltage (rms) f = 10Hz to 100kHz (Note 2) 40 40 µV/V
Long Term Stability 1000 hours @ TJ = 125°C 20 20 mV
Thermal Shutdown IO = 5mA 175 175 °C
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.
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SG78xxA/78xx
PRODUCT DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 6
WWW.Microsemi .COM
Copyright © 1997
Rev. 1.5, 2010-07-13
TM ® Positive Fixed Voltage Regulator
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG7812A / SG7812 with -55°C < TA <
125°C, VIN = 19V, IO = 500mA for the K, G and IG – Power Packages, IO = 100mA for the T and L packages, CIN = 0.33µF, and COUT =
0.1µF. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient
temperature.
Parameter Test Conditions SG7812A SG7812 Units
Min Typ Max Min Typ Max
Output Voltage TJ = 25°C 11.8 12.0 12.2 11.5 12.0 12.5 V
Line Regulation (Note 1) VIN = 14.5V to 30V, TJ = 25°C 12 60 12 120 mV
V
IN = 16V to 22V, TJ = 25°C 6 30 6 60 mV
Load Regulation (Note 1) Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C 28 80 28 120 mV
I
O = 250mA to 750mA, TJ = 25°C 10 40 10 60 mV
T – Pkg: IO = 5mA to 500mA, TJ = 25°C 10 40 10 60 mV
Total Output Voltage VIN = 15.5V to 27V
Tolerance Power Pkgs: IO = 5mA to 1.0A, P < 20W 11.7 12.0 12.3 11.4 12.0 12.6 V
T – Pkg: IO = 5mA to 500mA, P < 2W 11.7 12.0 12.3 11.4 12.0 12.6 V
Quiescent Current Over Temperature Range 7 7 mA
T
J = 25°C 4 6 4 6 mA
Quiescent Current Change With Line: VIN = 15V to 30V 0.8 0.8 mA
With Load: IO = 5mA to 1.0A (Power Pkgs.) 0.5 0.5 mA
I
O = 5mA to 500mA (T) 0.5 0.5 mA
Dropout Voltage ∆VO = 100mV, TJ = 25°C
Power Pkgs: IO = 1.0A, T – Pkg: IO = 500mA 2 2.5 2 2.5 V
Peak Output Current Power Pkgs: TJ = 25°C 1.5 2.0 3.3 1.5 2.0 3.3 A
T – Pkg: TJ = 25°C 0.5 1.0 1.7 0.5 1.0 1.7 A
Short Circuit Current Power Pkgs: VIN = 35V, TJ = 25°C 1.2 1.2 A
T – Pkg: VIN = 35V, TJ = 25°C 0.7 0.7 A
Ripple Rejection ∆VIN = 10V, f = 120Hz, TJ = 25°C 61 61 dB
Output Noise Voltage (rms) f = 10Hz to 100kHz (note 2) 40 40 µV/V
Long Term Stability 1000 hours @ TJ = 125°C 48 48 mV
Thermal Shutdown IO = 5mA 175 175 °C
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.
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SG78xxA/78xx
PRODUCT DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 7
WWW.Microsemi .COM
Copyright © 1997
Rev. 1.5, 2010-07-13
TM ® Positive Fixed Voltage Regulator
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG7815A / SG7815 with -55°C < TA <
125°C, VIN = 23V, IO = 500mA for the K, G and IG – Power Packages, IO = 100mA for the T and L packages, CIN = 0.33µF, and COUT =
0.1µF. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient
temperature.
Parameter Test Conditions SG7815A SG7815 Units
Min Typ Max Min Typ Max
Output Voltage TJ = 25°C 14.8 15.0 15.2 14.4 15.0 15.6 V
Line Regulation (Note 1) VIN = 17.5V to 30V, TJ = 25°C 15 75 15 150 mV
V
IN = 20V to 26V, TJ = 25°C 8 40 8 75 mV
Load Regulation (Note 1) Power Pkgs: IO = 5mA to 1.5A, TJ = 25°C 30 100 30 150 mV
I
O = 250mA to 750mA, TJ = 25°C 12 50 12 75 mV
T – Pkg: IO = 5mA to 500mA, TJ = 25°C 12 50 12 75
Total Output Voltage VIN = 18.5V to 30V
Tolerance Power Pkgs: IO = 5mA to 1.0A, P < 20W 14.6 15.0 15.4 14.3 15.0 15.7 V
T – Pkg: IO = 5mA to 500mA, P < 2W 14.6 15.0 15.4 14.3 15.0 15.7 V
Quiescent Current Over Temperature Range 7 7 mA
T
J = 25°C 4 6 4 6 mA
Quiescent Current Change With Line: VIN = 18.5V to 30V 0.8 0.8 mA
With Load: IO = 5mA to 1.0A (Power Pkgs) 0.5 0.5 mA
I
O = 5mA to 500mA (T) 0.5 0.5 mA
Dropout Voltage ∆VO = 100mV, TJ = 25°C
Power Pkgs: IO = 1.0A, T – Pkg: IO = 500mA 2 2.5 2 2.5 V
Peak Output Current Power Pkgs: TJ = 25°C 1.5 2.2 3.3 1.5 2.2 3.3 A
T – Pkg: TJ = 25°C 0.5 0.9 1.7 0.5 0.9 1.7 A
Short Circuit Current Power Pkgs: VIN = 35V, TJ = 25°C 1.2 1.2 A
T – Pkg: VIN = 35V, TJ = 25°C 0.7 0.7 A
Ripple Rejection ∆VIN = 10V, f = 120Hz, TJ = 25°C 60 60 dB
Output Noise Voltage (rms) f = 10Hz to 100kHz (note 2) 40 40 µV/V
Long Term Stability 1000 hours @ TJ = 125°C 60 60 mV
Thermal Shutdown IO = 5mA 175 175
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.
NOTES
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SG78xxA/78xx
PRODUCT DATASHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 8
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Copyright © 1997
Rev. 1.5, 2010-07-13
TM ® Positive Fixed Voltage Regulator
CONNECTION DIAGRAMS & ORDERING INFORMATION (SEE NOTES BELOW)
Package Part No.
Ambient
Temperature Range Connection Diagram
3-Terminal TO-3 Metal Can
K – Package
SG78xxAK/883B -55°C to 125°C
VIN
VOUT
1
2
Case is Ground
SG7805AK/DESC -55°C to 125°C
SG7812AK/DESC -55°C to 125°C
SG7815AK/DESC -55°C to 125°C
SG78xxAK -55°C to 125°C
SG78xxK/883B -55°C to 125°C
JAN7805K -55°C to 125°C
JAN7812K -55°C to 125°C
JAN7815K -55°C to 125°C
SG78xxK -55°C to 125°C
3-Pin TO-39 Metal Can
T – Package
SG78xxAT/883B -55°C to 125°C
1
2 3
VIN
VOUT GND
Case is Ground
SG7805AT/DESC -55°C to 125°C
SG7812AT/DESC -55°C to 125°C
SG7815AT/DESC -55°C to 125°C
SG78xxAT -55°C to 125°C
SG78xxT/883B -55°C to 125°C
JAN7805T -55°C to 125°C
JAN7812T -55°C to 125°C
JAN7815T -55°C to 125°C
SG78xxT -55°C to 125°C
3-Pin Hermetic TO-257
IG – Package (Isolated)
SG78xxAIG/883B -55°C to 125°C
VOUT
GROUND
VIN
SG7805AIG/DESC -55°C to 125°C
SG7812AIG/DESC -55°C to 125°C
SG7815AIG/DESC -55°C to 125°C
SG78xxAIG -55°C to 125°C
SG78xxIG/883B -55°C to 125°C
SG78xxIG -55°C to 125°C
20-Pin Ceramic Leadless Chip
Carrier
L – Package
SG7805AL/DESC -55°C to 125°C
N.C.
VIN
N.C.
N.C.
N.C.
N.C.
GND
N.C.
N.C.
VOUT
N.C.
VOUT
N.C.
N.C.
VO SENSE
N.C.
VIN
N.C.
N.C.
N.C.
123
4
5
6
7
8
910111213
14
15
16
17
18
1920
See Notes 5 & 6
SG7812AL/DESC -55°C to 125°C
SG7815AL/DESC -55°C to 125°C
SG78xxL/883B -55°C to 125°C
3-Pin Hermetic TO-257
G – Package (Case is Ground)
SG78xxAG/883B -55°C to 125°C
VOUT
GROUND
VIN
Case is Ground
SG7805AG/DESC -55°C to 125°C
SG7812AG/DESC -55°C to 125°C
SG7815AG/DESC -55°C to 125°C
SG78xxAG -55°C to 125°C
SG78xxG/883B -55°C to 125°C
SG78xxG -55°C to 125°C
Note 1: Contact factory for JAN and DESC product availability.
2: All parts are viewed from the top.
3: “xx” to be replaced by output voltage of specific fixed regulator.
4: Some products will be available in hermetic flat pack (F). Consult factory for price and availability.
5: Both inputs and outputs must be externally connected together at the device terminals.
6: For normal operation, the VO SENSE pin must be externa lly connected to the load.
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