SG117AHVIG [MICROSEMI]
1.5A Three Terminal Adj. Voltage Regulator;型号: | SG117AHVIG |
厂家: | Microsemi |
描述: | 1.5A Three Terminal Adj. Voltage Regulator |
文件: | 总13页 (文件大小:455K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SG117AHV/SG117HV Series
1.5A Three Terminal Adj. Voltage Regulator
Features
Description
Adjustable Output Down to 1.25V
1% Output Voltage Tolerance
0.01%/V Line Regulation
0.3% Load Regulation
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.
Min. 1.5A Output Current
Typical 80dB Ripple Rejection
Available in Hermetic TO-257
High Reliability Features –
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.
SG117HV
Available to MIL-STD-883
MSC-AMSG level "S" Processing Available
Available to DSCC
– Standard Microcircuit Drawing (SMD)
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.
Schematic Diagram
Figure 1 · Block Diagram
February 2013 Rev. 1.2
www.microsemi.com
© 2013 Microsemi Corporation- Analog Mixed Signal Group
1
Electrical Characteristics
Connection Diagrams and Ordering Information
Ambient
Temperature
Packaging
Type
Type
Package
Part Number
Connection Diagram
ADJUSTMENT
SG117AHVK-883B
1
2
SG117AHVK
SG117HVK-883B
SG117HVK
-55°C to
125°C
3-TERMINAL
METAL CAN
K
TO-3
VIN
SG117AHVT-883B
SG117AHVT
1
VIN
-55°C to
125°C
3-TERMINAL
METAL CAN
T
IG
G
TO-39
2
3
ADJUST
VOUT
SG117HVT-883B
SG117HVT
SG117AHVIG-883B
SG117AHVIG
VIN
3-Pin
HERMETIC
VOUT
ADJUST
-55°C to
125°C
HERMETIC
TO-257
Package
(Isolated)
SG117HVIG-883B
SG117HVIG
Case is Isolated
SG117AHVG-883B
SG117AHVG
VIN
3-Pin
HERMETIC
VOUT
-55°C to
125°C
HERMETIC
TO-257
ADJUST
SG117HVG-883B
SG117HVG
Package
Case is VOUT
SG117AHVL-883B
SG117AHVL
N.C.
N.C.
Ceramic
(LCC)
Leadless
Chip Carrier
N.C.
ADJUST
-55°C to
125°C
20-Pin
Ceramic
N.C.
N.C.
N.C.
VOUT SENSE
VOUT
L
SG117HVL-883B
N.C.
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.
Figure 2 · Connection Diagrams and Ordering Information
2
Absolute Maximum Ratings
Absolute Maximum Ratings
Parameter
Value
Internally Limited
60
Units
Power Dissipation
Input to Output Voltage Differential
Operating Junction Temperature
V
-65 to 150
300
°C
°C
Lead Temperature (Soldering, 10 seconds)
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
Thermal Resistance-Junction to Ambient, θJA
T Package: 3-Pin TO-39 Metal Can
3
°C/W
°C/W
35
°C/W
°C/W
Thermal Resistance-Junction to Case, θJC
Thermal Resistance-Junction to Ambient, θJA
IG Package: 3-Pin TO-257 Hermetic (Isolated)
Thermal Resistance-Junction to Case, θJC
Thermal Resistance-Junction to Ambient, θJA
G Package: 3-Pin TO-257 Hermetic
15
120
°C/W
°C/W
3.5
42
°C/W
°C/W
Thermal Resistance-Junction to Case, θJC
Thermal Resistance-Junction to Ambient, θJA
L Package: 20-Pin Ceramic (LCC) Leadless
Thermal Resistance-Junction to Case, θJC
Thermal Resistance-Junction to Ambient, θJA
3.5
42
°C/W
°C/W
35
120
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
V
Input Voltage Range
8 to 40
Operating Ambient Temperature Range
SG117AHV / SG117HV
°C
55 to 125
Note: Range over which the device is functional.
3
Electrical Characteristics
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.
SG117AHV
Typ
SG117HV
Typ Max
Units
Parameter
Test Condition
Min
Max
Min
Reference Section
Reference Voltage
Output Section
IOUT = 10mA, TA = 25°C
1.238 1.250 1.262
1.225 1.250 1.270 1.20
V
V
3V < (VIN – VOUT ) < 60V,
P < PMAX
10mA < IOUT < IMAX
1.25 1.30
3V < (VIN – VOUT) < 60V,
IL = 10mA
Line Regulation
TA = 25°C
0.005 0.01
0.01 0.02
0.02 0.05
%/V
%/V
TA = TMIN to TMAX
10mA < IOUT < IMAX
VOUT ≤ 5V, TA = 25°C
VOUT > 5V, TA = 25°C
VOUT ≤ 5V
0.01
0.02
5
15
0.3
50
1
5
15
0.3
50
1
mV
%
Load Regulation¹
0.1
20
0.3
0.1
20
0.3
mV
%
VOUT > 5V
Thermal Regulation²
Ripple Rejection
TA = 25°C, 20ms pulse
VOUT = 10V, f = 120Hz
CADJ = 1µF, TA = 25°C
CADJ = 10µF
0.002 0.02
0.03 0.07 %/W
65
80
65
80
dB
dB
66
66
Minimum Load Current
Current Limit
(VIN – VOUT) = 60V
(VIN – VOUT) < 15V
K, P, G, IG Packages
T, L Packages
3.5
7
3.5
7
mA
1.5
0.5
2.2
0.8
1.5
0.5
2.2
0.8
A
A
(VIN – VOUT) = 60V, TJ = 25°C
K, P, G, IG Packages
T, L Packages
0.3
0.1
0.3
0.1
1
A
A
Temperature Stability²
Long Term Stability²
1
2
1
%
%
TA = 125°C, 1000 Hours
0.3
0.3
1
RMS Output Noise (% of
VOUT)²
0.001
TA = 25°C, 10Hz < f < 10kHz
0.001
%
Adjust Section
Adjust Pin Current
50
100
5
50
100
5
µA
µA
10mA < IOUT < IMAX
2.5V < (VIN – VOUT) < 60V
,
Adjust Pin Current
Change
0.2
0.2
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.
4
Characteristic Curves
Characteristic Curves
0.2
0
1.27
1.26
1.25
1.24
‐0.2
‐0.4
‐0.6
‐0.8
‐1
Output
deviation (%)
VREF (V)
VIN = 15V; VOUT = 10V; IOUT = 0.5A
VIN = 60V; IOUT = 10mA
1.23
‐75 ‐50 ‐25
0
25 50 75 100 125 150
‐75 ‐50 ‐25
0
25 50 75 100 125 150
Temperature (°C)
Temperature (°C)
Figure 3 · Reference Voltage vs. Temperature
Figure 4 · Output Voltage Deviation vs. Temperature
100
‐30
‐35
‐40
Ripple
Rejection
(dB)
90
80
IADJUST (µA)
‐45
‐50
‐55
‐60
VIN = 20V; VOUT = 10V; IOUT = 100mA
f= 120Hz; CADJ = 10µF
VIN = 6.25V; VOUT = 1.25V; IOUT = 60mA
70
‐75 ‐50 ‐25
0
25 50 75 100 125 150
‐75 ‐50 ‐25
0
25 50 75 100 125 150
Temperature (°C)
Temperature (°C)
Figure 5 · Adjust Current vs. Temperature
Figure 6 · Ripple Rejection vs. Temperature
3
2.5
2
3.5
‐60°C
25°C
‐60°C
3
25°C
2.5
150°C
150°C
2
1.5
1
1.5
1
0.5
0
0.5
0
0
10
20
30
40
50
60
0
10
20
30
40
50
60
Differential Voltage (V)
Differential Voltage (V)
Figure 8 · Minimum Current vs. Input / Output Differential
Figure 7 · Output Current vs. Input / Output Differential
Voltage
Voltage for K, P, G, IG Packages
5
Electrical Characteristics
Characteristic Curves
50mA to
250mA
1V/Div
6.25V
50 mV/ Div
20 mV/ Div
4µS/Div
IOUT = 10mA
10 µS/ Div
Figure 9 · Load Transient Response
Figure 10 · Line Transient Response
T, L, Packages
T, L, Packages
VIN =6.25V, VOUT=1.25V; CIN = 1µF; COUT= 1µF
VIN =6.25V, VOUT=1.25V; CIN = 1µF; COUT= 1µF
100mA to
500mA
1V/Div
6.25V
20 mV/ Div
4µS/Div
IOUT = 10mA
4 µS/ Div
100 mV/ Div
Figure 12 · Line Transient Response
Figure 11 · Load Transient Response
K, P, G, IG Packages
K, P, G, IG Packages
VIN = 6.25V, VOUT = 1.25V; CIN = 1µF; COUT
1µF
=
VIN = 6.25V, VOUT = 1.25V; CIN = 1µF; COUT= 1µF
6
Application Information
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.
SG117AHV
IN
OUT
ADJ
⎛
⎞
R2
⎜
⎟
⎟
VOUT = VREF 1 +
+ IADJ • R2
⎜
R1
⎝
⎠
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.
SG117AHV
IN
OUT
ADJ
Figure 15 · Improving Ripple Rejection
7
Electrical Characteristics
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.
D1
1N4002
SG117AHV
IN
OUT
VOUT
ADJ
C1
R1
D2
1N4002
1µF
C2
10µF
R2
Note: D1 protects against C1
D2 protects against C2
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:
⎛
⎞
R2 + R1
⎜
⎜
⎟
⎟
RP
•
, RP = Parasitic Line Resistance
R1
⎝
⎠
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.
SG117AHV
IN
OUT
ADJ
Figure 17 · Connections for Best Load Regulation
8
Application Information
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
SG117AHV
IN
OUT
ADJ
Figure 18 · 1.2V – 25V Adjustable Regulator
SG117AHV
OUT
IN
ADJ
Figure 19 · 5V Regulator with Shut Down
SG117AHV
IOUT = VREF/R1*
IN
OUT
R1
ADJ
* 0.8 Ohms < R1 < 120 Ohms
Figure 20 ·
Figure 21 · Programmable Current Limiter
9
Electrical Characteristics
PACKAGE OUTLINE DIMENSIONS
Controlling dimensions are in inches, metric equivalents are shown for general information.
MILLIMETERS
INCHES
MIN
Dim
D
MIN
8.89
8.13
4.19
0.41
-
MAX
9.40
8.51
4.70
0.48
1.02
MAX
0.370
0.335
0.185
0.019
0.040
D1
D
D1
A
0.350
0.320
0.165
0.016
-
Q
e
A
F
b
b
F
L1
e
5.08 BSC
0.200 BSC
e1
k
0.71
0.74
0.86
1.14
0.028
0.029
0.500
0.034
0.045
0.570
k1
L
L
12.70
14.48
k
α
α
45° TYP
2.54 TYP
0.41 0.53
90° TYP
1.27
45° TYP
0.100 TYP
0.016 0.021
90° TYP
0.50
e1
b1
Q
L1
k1
b1
-
-
Figure 22 · T 3-Pin Metal Can TO-39 Package Dimensions
MILLIMETERS
INCHES
Dim
MIN
8.64
-
MAX
9.14
MIN
MAX
0.360
0.320
D/E
E3
e
0.340
-
8.128
1.270 BSC
0.635 TYP
0.050 BSC
0.025 TYP
B1
L
1.02
1.52
0.040
0.060
0.090
A
1.626
2.286
0.064
h
1.016 TYP
0.040 TYP
A1
A2
L2
B3
1.372
-
1.68
1.168
2.41
0.054
-
0.066
0.046
0.95
1.91
0.075
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
10
PACKAGE OUTLINE DIMENSIONS
PACKAGE OUTLINE DIMENSIONS
MILLIMETERS
INCHES
MIN
Dim
E
MIN
4.70
0.89
2.92
0.71
16.38
10.41
MAX
5.21
MAX
0.205
0.045
0.125
0.032
0.660
0.430
A
A
A1
A2
b
0.185
0.035
0.115
0.027
0.645
0.410
V
1.14
P
3.18
A1
Z
.081
D
16.76
10.92
D
D1*
e
O
L
D1
2.54 BSC
0.100 BSC
E*
H
10.41
10.67
0.50
0.410
0.420
0.020
J
L
12.70
13.39
3.56
0.500
0.527
0.140
H
O
P
13.64
3.81
0.10
5.38
0.537
0.150
0.004
0.212
b
J
V
5.13
0.202
Z
1.40 TYP
0.055 TYP
e
A2
*Excludes Weld Fillet Around Lid.
Figure 24 · G/IG 3-Pin Hermetic TO-257 Package Dimensions
MILLIMETERS
INCHES
MIN
Dim
MIN
6.86
MAX
7.62
MAX
0.300
1.197
0.043
0.775
0.675
0.440
0.225
0.080
0.161
0.480
0.525
A
q
0.270
1.177
0.038
0.765
0.655
0.420
0.205
0.060
0.151
0.425
0.495
29.90
0.97
30.40
1.09
b
D
S
19.43
16.64
10.67
5.21
19.68
17.14
11.18
5.72
e
E1
F
1.52
2.03
R1
L
3.84
4.09
10.79
12.57
12.19
13.34
R
Figure 25 · K 3-Pin TO-3 Package Dimensions
11
Electrical Characteristics
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.
12
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SG1846.0/01.13
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