SG117L-883B [MICROSEMI]

Adjustable Positive Standard Regulator, 1.2V Min, 25V Max, BIPolar, CQCC20;


型号：	SG117L-883B
厂家：	Microsemi
描述：	Adjustable Positive Standard Regulator, 1.2V Min, 25V Max, BIPolar, CQCC20 输出元件调节器
文件：	总14页 (文件大小：611K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SG117A/SG117

1.5A Three Terminal Adjustable Voltage Regulator

Features

Description

. Adjustable Output Down to 1.25V

. 1% Output Voltage Tolerance

. 0.01%/V Line Regulation

. 0.3% Load Regulation

The SG117 and SG117A are 3-terminal positive

adjustable voltage regulators which offer improved

performance over the original 117 design. A major

feature of the SG117A 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

Moreover, the SG117A reference voltage is guaranteed

not to exceed 2% when operating over the full load, line

High Reliability Features –

and power dissipation conditions.

The SG117A

SG117A/SG117

adjustable regulators offer an improved solution for all

positive voltage regulator requirements with load

currents up to 1.5A.

. Available to MIL-STD-883, ¶1.2.1

. MSC-AMS level "S" Processing Available

. Available to DSCC

In addition to replacing many fixed regulators, the

SG117/A 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. A higher voltage version is available

the SG117AHV and SG117HV which offers input

voltage up to 60V.

– Standard Microcircuit Drawing (SMD)

. MIL-M-38510/7703405XA SG117AT-JAN

. MIL-M-38510/7703405YA SG117AK-JAN

Schematic Diagram

Figure 1 · Block Diagram

January 2015 Rev. 1.4

www.microsemi.com

1.5A 3-Terminal Adjustable Voltage Regulator

Connection Diagrams and Ordering Information

Ambient

Temperature

Packaging

Type

Package

Part Number

Connection Diagram

SG117AK

SG117AK-883B

SG117AK-DESC

SG117K

ADJUSTMENT

-55°C to

125°C

3-TERMINAL

METAL CAN

TO-3

SG117K-883B

SG117K-DESC

SG117K-JAN

SG117AT

V_IN

SG117AT-883B

SG117AT-DESC

SG117T

V_IN

-55°C to

125°C

3-TERMINAL

METAL CAN

TO-39

ADJUST

V_OUT

SG117T-883B

SG117T-DESC

SG117T-JAN

SG117AIG

SG117AIG-883B

SG117AIG-DESC

SG117IG

V_IN

3-Pin

HERMETIC

V_OUT

ADJUST

-55°C to

125°C

TO-257

Package

(Isolated)

Case is Isolated

SG117IG-883B

SG117IG-DESC

SG117AG

SG117AG-883B

SG117AG-DESC

SG117G

V_IN

3-Pin

HERMETIC

V_OUT

ADJUST

-55°C to

125°C

TO-257

Package

Case is V_OUT

SG117G-883B

SG117G-DESC

Connection Diagrams and Ordering Information

Ambient

Temperature

Packaging

Type

Package

Part Number

Connection Diagram

SG117AL

SG117AL-883B

SG117AL-DESC

SG117L

-55°C to

125°C

20-Pin

Ceramic

CLCC

SG117L-883B

SG117L-DESC

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.

5. These Hermetic Packages use Sn63/Pb37 hot solder dip lead finish, contact factory for availability of RoHS versions.

1.5A 3-Terminal Adjustable Voltage Regulator

Absolute Maximum Ratings

Parameter

Value

Internally Limited

Units

Power Dissipation

Input to Output Voltage Differential

Storage Temperature Range

Maximum Operating Junction Temperature

-65 to 150

150

°C

Lead Temperature (Soldering, 10 seconds)

300

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, θ_JC

Thermal Resistance-Junction to Ambient, θ_JA

T Package: 3-Pin TO-39 Metal Can

°C/W

Thermal Resistance-Junction to Case, θ_JC

Thermal Resistance-Junction to Ambient, θ_JA

IG Package: 3-Pin TO-257 Hermetic (Isolated)

Thermal Resistance-Junction to Case, θ_JC

Thermal Resistance-Junction to Ambient, θ_JA

G Package: 3-Pin TO-257 Hermetic

120

°C/W

3.5

°C/W

Thermal Resistance-Junction to Case, θ_JC

Thermal Resistance-Junction to Ambient, θ_JA

L Package: 20-Pin Ceramic (LCC) Leadless

Thermal Resistance-Junction to Case, θ_JC

Thermal Resistance-Junction to Ambient, θ_JA

3.5

°C/W

120

Notes:

1. Junction Temperature Calculation: T_J= T_A+ (P_Dx θ_JA).

2. The above numbers for θ_JCare maximums for the limiting thermal resistance of the package in a standard mounting

configuration. The θ_JAnumbers 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

V_OUT+3.5V to 37

Operating Ambient Temperature Range

SG117A / SG117

°C

-55 to 125

Note: Range over which the device is functional.

Electrical Characteristics

Unless otherwise specified, these characteristics apply over the full operating ambient temperature for the

SG117A / SG117 with -55°C < T_A< 125°C, V_IN– V_OUT= 5.0V and for I_OUT= 500mA (K, G, and IG) and I_OUT

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.

I_MAXis 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.

SG117A

Typ

SG117

Typ

Parameter

Test Condition

Units

Min

Max

Min

Max

Reference Section

Reference Voltage

Output Section

I_OUT= 10mA, T_A= 25°C

1.238 1.250 1.262

1.225 1.250 1.270 1.20

3V ≤ (V_IN– V_OUT) ≤ 40V,

P ≤ P_MAX

10mA ≤ I_OUT≤ I_MAX

1.25 1.30

3V ≤ (V_IN– V_OUT) ≤ 40V,

I_L= 10mA

Line Regulation¹

T_A= 25°C

0.005 0.01

0.01 0.02

0.02 0.05

%/V

T_A= T_MINto T_MAX

10mA ≤ I_OUT≤ I_MAX

V_OUT≤ 5V, T_A= 25°C

V_OUT> 5V, T_A= 25°C

V_OUT≤ 5V

0.01

0.02

0.3

Load Regulation¹

0.1

0.3

0.1

0.3

V_OUT> 5V

Thermal Regulation²

Ripple Rejection

T_A= 25°C, 20ms pulse

V_OUT= 10V, f = 120Hz

C_ADJ= 1µF, T_A= 25°C

C_ADJ= 10µF

0.002 0.02

0.03 0.07 %/W

Minimum Load Current

Current Limit

(V_IN– V_OUT) = 40V

(V_IN– V_OUT) ≤ 15V

K, P, G, IG Packages

T, L Packages

3.5

1.5

0.5

2.2

0.8

1.5

0.5

2.2

0.8

(V_IN– V_OUT) = 40V, T_J= 25°C

K, P, G, IG Packages

T, L Packages

0.3

0.4

0.2

0.3

0.4

0.2

0.15

Temperature Stability²

Long Term Stability²

T_A= 125°C, 1000 Hours

0.3

RMS Output Noise (% of

V_OUT)²

T_A= 25°C, 10Hz ≤ f ≤ 10kHz

0.001

Adjust Section

Adjust Pin Current

100

µA

10mA < I_OUT< I_MAX

2.5V < (V_IN– V_OUT) < 40V

Adjust Pin Current

Change

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.

1.5A 3-Terminal Adjustable Voltage Regulator

Characteristic Curves

Figure 2 · Output Voltage Deviation vs. Temperature

Figure 3 · Output Current vs. Input / Output Differential

Figure 4 · Adjust Current vs. Temperature

Figure 5 · Input / Output Differential vs. Temperature

Figure 7 · Quiescent Current vs. Input /Output

Figure 6 · Reference Voltage vs. Temperature

Differential

Characteristic Curves

Figure 8 · Ripple Rejection vs. Output Voltage

Figure 9 · Ripple Rejection vs. Frequency

Figure 10 · Ripple Rejection vs. Output Current

Figure 11 · Output Impedance vs. Frequency

Figure 12 · Line Transient Response

Figure 13 · Load Transient Response

1.5A 3-Terminal Adjustable Voltage Regulator

Characteristic Curves

Figure 14 · Output Impedance vs. Frequency

Figure 15 · Line Transient Response

Figure 16 · Load Transient Response

Application Information

General

The SG117A develops a 1.25V reference voltage between the output (OUT) and the adjust (ADJ) terminals (see

Basic Regulator Circuit). By placing a resistor, R₁between these two terminals, a constant current is caused to flow

through R₁and down through R₂to 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.





R₂

R₁

_{1 }





V_OUT V_REF

 I_ADJ R₂





Figure 17 · Basic Regulator Circuit

The I_ADJcurrent does add an error to the output divider ratio, however because I_ADJis 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 V_REF. 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 18 · 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 19 · Improving Ripple Rejection

1.5A 3-Terminal Adjustable Voltage Regulator

While the SG117 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 figure below.

D1 1N4002

SG117A

V_OUT

OUT

ADJ

1N4002

1 µF

10µF

Note: D1 protects against C1

D2 protects against C2

Figure 20 · Use of Protection Diodes

Load Regulation

Because the SG117A 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:

 _{R  R}







R_P

 ParasiticLineResistance

^{, R}



R₁





Connected as shown, R_Pis not multiplied by the divider ratio. R_Pis 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 21 · Connections for Best Load Regulation

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 V_INto V_OUTdifferential voltages. This power limiting characteristic will prevent the regulator

from providing full output current depending on the V_INto V= differential. Also if during a short circuit situation the

regulator was presented with a voltage that exceeds the Absolute Maximum Rating of 40V (e.g. V_IN> 40V, V_OUT= 0V)

the device may fail, or be permanently damaged.

Typical Applications

Figure 22 · 1.2V – 25V Adjustable Regulator

Figure 23 · 5V Regulator with Shut Down

SG117A

I_OUT= V_REF/R1*

OUT

ADJ

* 0.8Ω ≤ R1 ≤ 120Ω

Figure 24 ·

Figure 25 · Programmable Current Limiter

1.5A 3-Terminal Adjustable Voltage Regulator

PACKAGE OUTLINE DIMENSIONS

Controlling dimensions are in inches, metric equivalents are shown for general information.

MILLIMETERS

INCHES

MIN

Dim

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

0.350

0.320

0.165

0.016

5.08 BSC

0.200 BSC

0.71

0.74

0.86

1.14

0.028

0.029

0.500

0.034

0.045

0.570

12.70

14.48

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

Figure 26 · 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

0.340

8.128

1.270 BSC

0.635 TYP

0.050 BSC

0.025 TYP

1.02

1.52

0.040

0.060

0.090

1.626

2.286

0.064

1.016 TYP

0.040 TYP

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 27 · L 20-Pin Ceramic Leadless Chip Carrier (LCC) Package Dimensions

PACKAGE OUTLINE DIMENSIONS

MILLIMETERS

INCHES

MIN

Dim

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

A₁

A₂

0.185

0.035

0.115

0.027

0.645

0.410

1.14

3.18

A₁

.081

16.76

10.92

D₁*

D₁

2.54 BSC

0.100 BSC

10.41

10.67

0.50

0.410

0.420

0.020

12.70

13.39

3.56

0.500

0.527

0.140

13.64

3.81

0.10

5.38

0.537

0.150

0.004

0.212

5.13

0.202

1.40 TYP

0.055 TYP

A₂

*Excludes Weld Fillet Around Lid.

Figure 28 · 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

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

19.43

16.64

10.67

5.21

19.68

17.14

11.18

5.72

1.52

2.03

3.84

4.09

10.79

12.57

12.19

13.34

Figure 29 · K 3-Pin TO-3 Package Dimensions

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property of their respective owners.

SG117 1.4/01.15

SG117L-883B [MICROSEMI]

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