February 2013 Rev. 1.2 www.microsemi.com 1
© 2013 Microsemi Corporation- Analog Mixed Signal Group
1.5A Three Terminal Adj. Voltage Regulator
Schematic Diagram
Figure 1 · Block Diagram
Features
Adjustable Output Down to 1.25V
1% Output Voltage Tolerance
0.01%/V Line Regulation
0.3% Load Regulation
Min. 1.5A Output Current
Typical 80dB Ripple Rejection
Available in Hermetic TO-257
High Reliability Features –
SG117HV
Available to MIL-STD-883
MSC-AMSG level "S" Processing Available
Available to DSCC
– Standard Microcircuit Drawing (SMD)
Description
The SG117HV and SG117AHV are 3-terminal positive
adjustable voltage regulators which offer a higher input
voltage range. They are capable of supplying in excess
of 0.5A or 1.5A over an output voltage range of 1.25V
to 57V, utilizing an input supply voltage up to 60V. A
major feature of the SG117AHV is a reference voltage
tolerance guaranteed within ± 1%, allowing an overall
power supply tolerance to be better than 3% using
inexpensive 1% resistors. Line and load regulation
performance has been improved as well.
Moreover, the SG117AHV reference voltage is
guaranteed not to exceed 2% when operating over the
full load, line and power dissipation conditions. The
SG117AHV adjustable regulators offer an improved
solution for all positive voltage regulator requirements
with load currents up to 1.5A.
In addition to replacing many fixed regulators, the
SG117HV/AHV can be used in a variety of other
applications due to its ‘floating’ design as long as the
input-to-output differential maximum is not exceeded,
such as a current source.
SG117AHV/SG117HV Series
Electrical Characteristics
2
Connection Diagrams and Ordering Information
Figure 2 · Connection Diagrams and Ordering Information
Ambient
Temperature Type Package Part Number Packaging
Type Connection Diagram
-55°C to
125°C K 3-TERMINAL
METAL CAN
SG117AHVK-883B
TO-3
SG117AHVK
SG117HVK-883B
SG117HVK
-55°C to
125°C T 3-TERMINAL
METAL CAN
SG117AHVT-883B
TO-39
SG117AHVT
SG117HVT-883B
SG117HVT
-55°C to
125°C IG
3-Pin
HERMETIC
Package
(Isolated)
SG117AHVIG-883B
HERMETIC
TO-257
Case is Isolated
SG117AHVIG
SG117HVIG-883B
SG117HVIG
-55°C to
125°C G
3-Pin
HERMETIC
Package
SG117AHVG-883B
HERMETIC
TO-257
Case is VOUT
SG117AHVG
SG117HVG-883B
SG117HVG
-55°C to
125°C L 20-Pin
Ceramic
SG117AHVL-883B
Ceramic
(LCC)
Leadless
Chip Carrier
SG117AHVL
SG117HVL-883B
SG117HVL
Notes:
1. Contact factory for JAN and DESC part availability.
2. All parts are viewed from the top.
3. For devices with multiple inputs and outputs both must be externally connected together at the device terminals.
4. For normal operation, the SENSE pin must be externally connected to the load.
ADJUSTMENT
VIN
1
2
VIN
VOUT
ADJUST
VIN
VOUT
ADJUST
1
2 3
VIN
ADJUST VOUT
VOUT SENSE
N.C.
N.C.
N.C.
VIN
N.C.
N.C.
N.C.
N.C.
ADJUST
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
VOUT
N.C.
123
4
5
6
7
8
910111213
14
15
16
17
18
19
20
Absolute Maximum Ratings
3
Absolute Maximum Ratings
Parameter Value Units
Power Dissipation Internally Limited
Input to Output Voltage Differential 60 V
Operating Junction Temperature -65 to 150 °C
Lead Temperature (Soldering, 10 seconds) 300 °C
Notes:
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.
Thermal Data
Parameter Value Units
K Package: 3 Terminal TO-3 Metal Can
Thermal Resistance-Junction to Case, θJC 3
°C/W
Thermal Resistance-Junction to Ambient, θJA 35
°C/W
T Package: 3-Pin TO-39 Metal Can
Thermal Resistance-Junction to Case, θJC 15
°C/W
Thermal Resistance-Junction to Ambient, θJA 120
°C/W
IG Package: 3-Pin TO-257 Hermetic (Isolated)
Thermal Resistance-Junction to Case, θJC 3.5
°C/W
Thermal Resistance-Junction to Ambient, θJA 42
°C/W
G Package: 3-Pin TO-257 Hermetic
Thermal Resistance-Junction to Case, θJC 3.5
°C/W
Thermal Resistance-Junction to Ambient, θJA 42
°C/W
L Package: 20-Pin Ceramic (LCC) Leadless
Thermal Resistance-Junction to Case, θJC 35
°C/W
Thermal Resistance-Junction to Ambient, θJA 120
°C/W
Notes:
1. Junction Temperature Calculation: TJ = TA + (PD x θJA).
2. The above numbers for θJC are maximums for the limiting thermal resistance of the package in a standard mounting
configuration. The θJA numbers are meant to be guidelines for the thermal performance of the device/pcboard system. All of
the above assume no ambient airflow.
Recommended Operating Conditions
Parameter Value Units
Input Voltage Range 8 to 40 V
Operating Ambient Temperature Range
SG117AHV / SG117HV 55 to 125 °C
Note: Range over which the device is functional.
Electrical Characteristics
4
Electrical Characteristics
Unless otherwise specified, these characteristics apply over the full operating ambient temperature for the
SG117AHV / SG117HV with -55°C < TA < 125°C, VIN – VOUT = 5.0V and for IOUT = 500mA (K, G, and IG) and
IOUT = 100mA (T, and L packages). Although power dissipation is internally limited, these specifications are
applicable for power dissipations of 2W for the T, and L packages, and 20W for the K, G, and IG packages.
IMAX is 1.5A for the K, G, and IG packages and 500mA for the T, and L packages. Low duty cycle pulse
testing techniques are used which maintains junction and case temperatures equal to the ambient
temperature.
Parameter Test Condition
SG117AHV SG117HV Units
Min Typ Max Min Typ Max
Reference Section
Reference Voltage
IOUT = 10mA, TA = 25°C 1.238 1.250 1.262 V
3V < (VIN – VOUT ) < 60V,
P < PMA
X
1.225 1.250 1.270 1.20 1.25 1.30 V
10mA < IOUT < IMA
X
Output Section
Line Regulation
3V < (VIN – VOUT) < 60V,
IL = 10mA
TA = 25°C 0.005 0.01 0.01 0.02 %/V
TA = TMIN to TMAX 0.01 0.02 0.02 0.05 %/V
Load Regulation¹
10mA < IOUT < IMAX
VOUT ≤ 5V, TA = 25°C 5 15 5 15 mV
VOUT > 5V, TA = 25°C 0.1 0.3 0.1 0.3 %
VOUT ≤ 5V 20 50 20 50 mV
VOUT > 5V 0.3 1 0.3 1 %
Thermal Regulation² TA = 25°C, 20ms pulse 0.002 0.02 0.03 0.07 %/W
Ripple Rejection VOUT = 10V, f = 120Hz
C
ADJ = 1µF, TA = 25°C 65 65 dB
C
ADJ = 10µF 66 80 66 80 dB
Minimum Load Current (VIN – VOUT) = 60V 3.5 7 3.5 7 mA
Current Limit (VIN – VOUT) < 15V
K, P, G, IG Packages 1.5 2.2 1.5 2.2 A
T, L Packages 0.5 0.8 0.5 0.8 A
(VIN – VOUT) = 60V, TJ = 25°C
K, P, G, IG Packages 0.3 0.3 A
T, L Packages 0.1 0.1 A
Temperature Stability² 1 2 1 %
Long Term Stability² TA = 125°C, 1000 Hours 0.3 1 0.3 1 %
RMS Output Noise (% of
VOUT)² TA = 25°C, 10Hz < f < 10kHz 0.001 0.001 %
Adjust Section
Adjust Pin Current 50 100 50 100 µA
Adjust Pin Current
Change
10mA < IOUT < IMAX,
2.5V < (VIN – VOUT) < 60V
0.2 5 0.2 5 µA
¹Regulation is measured at constant junction temperature, using pulse testing with low duty cycle. Changes in output voltage
due to heating effects are covered under the specification for thermal regulation.
²These parameters, although guaranteed, are not tested in production.
Characteristic Curves
5
Characteristic Curves
Figure 3 · Reference Voltage vs. Temperature Figure 4 · Output Voltage Deviation vs. Temperature
Figure 5 · Adjust Current vs. Temperature Figure 6 · Ripple Rejection vs. Temperature
Figure 7 · Output Current vs. Input / Output Differential
Voltage for K, P, G, IG Packages
Figure 8 · Minimum Current vs. Input / Output Differential
Voltage
VREF(V)
1.23
1.24
1.25
1.26
1.27
‐75 ‐50 ‐25 0 25 50 75 100 125 150
ReferenceVoltage(V)
Temperature(°C)
VIN =60V;IOUT=10mA
Output
deviation(%)
‐1
‐0.8
‐0.6
‐0.4
‐0.2
0
0.2
‐75 ‐50 ‐25 0 25 50 75 100 125 150
OutputVoltageDeviation(%)
Temperature(°C)
VIN =15V;VOUT =10V;IOUT=0.5A
IADJUST (µA)
‐60
‐55
‐50
‐45
‐40
‐35
‐30
‐75 ‐50 ‐25 0 25 50 75 100 125 150
AdjustCurrent(µA)
Temperature(°C)
VIN =6.25V;VOUT =1.25V;IOUT =60mA
Ripple
Rejection
(dB)
70
80
90
100
‐75 ‐50 ‐25 0 25 50 75 100 125 150
RippleRejection(dB)
Temperature(°C)
VIN =20V;VOUT =10V;IOUT =100mA
f=120Hz;CADJ =10µF
0
0.5
1
1.5
2
2.5
3
0 102030405060
OutputCurrent(A)
DifferentialVoltage(V)
‐60
°
C
25
°
C
150
°
C
0
0.5
1
1.5
2
2.5
3
3.5
0 102030405060
MinimumCurrent(mA)
DifferentialVoltage(V)
‐60
°
C
25°C
150°C
Electrical Characteristics
6
Characteristic Curves
Figure 9 · Load Transient Response
T, L, Packages
VIN =6.25V, VOUT=1.25V; CIN = 1µF; COUT= 1µF
Figure 10 · Line Transient Response
T, L, Packages
VIN =6.25V, VOUT=1.25V; CIN = 1µF; COUT= 1µF
Figure 11 · Load Transient Response
K, P, G, IG Packages
VIN = 6.25V, VOUT = 1.25V; CIN = 1µF; COUT= 1µF
Figure 12 · Line Transient Response
K, P, G, IG Packages
VIN = 6.25V, VOUT = 1.25V; CIN = 1µF; COUT=
1µF
50mA to
250mA
50 mV/ Div
Output Voltage Load Transient
10 µS/ Div
20 mV/ Div
Output Voltage Line Transient
1V/Div
6.25V
4µS/Div IOUT = 10mA
20 mV/ Div
Output Voltage Line Transient
1V/Div
6.25V
4µS/Div IOUT = 10mA
100mA to
500mA
Output Voltage Load Transient
4 µS/ Div
100 mV/ Div
Application Information
7
Application Information
General
The SG117AHV develops a 1.25V reference voltage between the output (OUT) and the adjust (ADJ) terminals
(see Basic Regulator Circuit). By placing a resistor, R1 between these two terminals, a constant current is caused to
flow through R1 and down through R2 to set the overall output voltage. Normally this current is the specified minimum
load current of 5mA or 10mA. It is important to maintain this minimum output load current requirement otherwise the
device may fail to regulate, and the output voltage may rise.
2ADJ
1
2
REFOUT RI
R
R
1VV •++= ⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
Figure 13 · Basic Regulator Circuit
The IADJ current does add an error to the output divider ratio, however because IADJ is very small and constant
when compared with the current through R1, it represents a small error and can often be ignored.
It is easily seen from the above equation, that even if the resistors were of exact value, the accuracy of the output
is limited by the accuracy of VREF. With a guaranteed 1% reference, a 5V power supply design, using ±2% resistors,
would have a worse case manufacturing tolerance of ± 4%. If 1% resistors were used, the tolerance would drop to
± 2.5%. A plot of the worst case output voltage tolerance as a function of resistor tolerance is shown below.
Figure 14 · Voltage Tolerance vs. Resistor Tolerance
Bypass Capacitors
Input bypassing using a 0.1 μF ceramic or 1μF solid tantalum is recommended, and especially when any input filter
capacitors are more than 5 inches from the device. A 0.1µF bypass capacitor on the ADJ pin is required if the load
current varies by more than 1A/µsec. Improved ripple rejection (80dB) can be accomplished by adding a 10μF
capacitor from the ADJ pin to ground.
Figure 15 · Improving Ripple Rejection
SG117AHV
OUT
ADJ
IN
SG117AHV
OUT
ADJ
IN
Electrical Characteristics
8
While the SG117HV is stable with no output capacitor, for improved AC transient response and to prevent the
possibility of oscillation due to an unknown reactive load, a 1μF capacitor is also recommended at the output.
Because of their low impedance at high frequencies, the best type of capacitor to use is solid tantalum; ceramic
capacitors may also be used. When bypass capacitors are used, it may be necessary to provide external protection
diodes to prevent this external large capacitance from discharging through internal low current paths, which may
damage the device. Although the duration of any surge current is short, there may be sufficient energy to damage
the regulator. This is particularly true of the large capacitance on the ADJ pin when output voltages are higher than
25V. Such a capacitor could discharge into the ADJ pin when either the input or output is shorted. See example Use
of Protection Diodes.
Figure 16 · Use of Protection Diodes
Load Regulation
Because the SG117AHV is a three-terminal device, it is not possible to provide true remote load sensing. Load
regulation will be limited by the resistance of the wire connecting the regulator to the load. From the data sheet
specification, regulation is measured at the bottom of the package. Negative side sensing is a true Kelvin connection,
with the bottom of the output divider returned to the negative side of the load. Although it may not be immediately
obvious, best load regulation is obtained when the top of the divider is connected directly to the case, not to the load.
This is illustrated in (Connections for Best Load Regulation). If R1 were connected to the load, the effective
resistance between the regulator and the load would be:
Resistance Line ParasiticR,
R
RR
RP
1
12
P=
+
•⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
Connected as shown, RP is not multiplied by the divider ratio. RP is about 0.004Ω per foot using 16 gauge wire.
This translates to 4mV/ft. at 1A load current, so it is important to keep the positive lead between regulator and load as
short as possible.
Figure 17 · Connections for Best Load Regulation
SG117AHV
OUT
ADJ
IN
D1
1N4002
D2
1N4002
C2
10µF
C1
VOUT
Note: D1 protects against C1
D2 protects against C2
1µF R1
R2
SG117AHV
OUT
ADJ
IN
Application Information
9
Current Limit
As outlined in the Electrical Characteristics the current limit will activate whenever the output current exceeds the
specified levels. It is also important to bear in mind that the regulator includes a foldback-current characteristic that
limits the current at higher VIN to VOUT differential voltages. This power limiting characteristic will prevent the regulator
from providing full output current depending on the VIN to V= differential. Also if during a short circuit situation the
regulator was presented with a voltage that exceeds the Absolute Maximum Rating of 60V (e.g. VIN > 60V, VOUT = 0V)
the device may fail, or be permanently damaged.
Typical Applications
Figure 18 · 1.2V – 25V Adjustable Regulator
Figure 19 · 5V Regulator with Shut Down
Figure 20 ·
Figure 21 · Programmable Current Limiter
SG117AHV
OUT
ADJ
IN
SG117AHV
OUT
ADJ
IN
SG117AHV
OUT
ADJ
IN IOUT = VREF/R1*
* 0.8 Ohms < R1 < 120 Ohms
R1
Electrical Characteristics
10
PACKAGE OUTLINE DIMENSIONS
Controlling dimensions are in inches, metric equivalents are shown for general information.
Q
αk
k1
e
e1
A
D1
D
b
b1
L
F
L1
Dim MILLIMETERS INCHES
MIN MAX MIN MAX
D 8.89 9.40 0.350 0.370
D1 8.13 8.51 0.320 0.335
A 4.19 4.70 0.165 0.185
b 0.41 0.48 0.016 0.019
F - 1.02 - 0.040
e 5.08 BSC 0.200 BSC
k 0.71 0.86 0.028 0.034
k1 0.74 1.14 0.029 0.045
L 12.70 14.48 0.500 0.570
α 45° TYP 45° TYP
e1 2.54 TYP 0.100 TYP
b1 0.41 0.53 0.016 0.021
Q 90° TYP 90° TYP
L1 - 1.27 - 0.50
Figure 22 · T 3-Pin Metal Can TO-39 Package Dimensions
Dim MILLIMETERS INCHES
MIN MAX MIN MAX
D/E 8.64 9.14 0.340 0.360
E3 - 8.128 - 0.320
e 1.270 BSC 0.050 BSC
B1 0.635 TYP 0.025 TYP
L 1.02 1.52 0.040 0.060
A 1.626 2.286 0.064 0.090
h 1.016 TYP 0.040 TYP
A1 1.372 1.68 0.054 0.066
A2 - 1.168 - 0.046
L2 1.91 2.41 0.075 0.95
B3 0.203R 0.008R
Note:
1. All exposed metalized area shall be gold plated 60
micro-inch minimum thickness over nickel plated unless
otherwise specified in purchase order.
Figure 23 · L 20-Pin Ceramic Leadless Chip Carrier (LCC) Package Dimensions
PACKAGE OUTLINE DIMENSIONS
11
PACKAGE OUTLINE DIMENSIONS
eA2
E
V
b
P
Z
H
A
A1
L
D1
D
J
O
Dim MILLIMETERS INCHES
MIN MAX MIN MAX
A 4.70 5.21 0.185 0.205
A1 0.89 1.14 0.035 0.045
A2 2.92 3.18 0.115 0.125
b 0.71 .081 0.027 0.032
D 16.38 16.76 0.645 0.660
D1* 10.41 10.92 0.410 0.430
e 2.54 BSC 0.100 BSC
E* 10.41 10.67 0.410 0.420
H 0.50 0.020
L 12.70 0.500
O 13.39 13.64 0.527 0.537
P 3.56 3.81 0.140 0.150
J 0.10 0.004
V 5.13 5.38 0.202 0.212
Z 1.40 TYP 0.055 TYP
*Excludes Weld Fillet Around Lid.
Figure 24 · G/IG 3-Pin Hermetic TO-257 Package Dimensions
Dim MILLIMETERS INCHES
MIN MAX MIN MAX
A 6.86 7.62 0.270 0.300
q 29.90 30.40 1.177 1.197
b 0.97 1.09 0.038 0.043
D 19.43 19.68 0.765 0.775
S 16.64 17.14 0.655 0.675
e 10.67 11.18 0.420 0.440
E1 5.21 5.72 0.205 0.225
F 1.52 2.03 0.060 0.080
R1 3.84 4.09 0.151 0.161
L 10.79 12.19 0.425 0.480
R 12.57 13.34 0.495 0.525
Figure 25 · K 3-Pin TO-3 Package Dimensions
Electrical Characteristics
12
PRODUCTION DATA – Information contained in this document is proprietary to
Microsemi and is current as of publication date. This document may not be modified
in any way without the express written consent of Microsemi. Product processing
does not necessarily include testing of all parameters. Microsemi reserves the right
to change the configuration and performance of the product and to discontinue
product at any time.
SG1846.0/01.13
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