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MSK5000BTD

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品牌：MSK

描述：DUAL POSITIVE/NEGATIVE, 3 AMP, LOW DROPOUT FIXED VOLTAGE REGULATORS

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MSK5000BTD 概述

DUAL POSITIVE/NEGATIVE, 3 AMP, LOW DROPOUT FIXED VOLTAGE REGULATORS 双正/负， 3 AMP ，低压差稳压固定电压稳压

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ISO-9001 CERTIFIED BY DSCC

DUAL POSITIVE/NEGATIVE,

3 AMP, LOW DROPOUT

5000

SERIES

FIXED VOLTAGE REGULATORS

M.S.KENNEDY CORP.

4707 Dey Road Liverpool, N.Y. 13088

(315) 701-6751

MIL-PRF-38534 CERTIFIED

FEATURES:

Dual Low Dropout Voltage

Internal Short Circuit Current Limit

Output Voltages Are Internally Set To ±1% Max

Electrically Isolated Case

Internal Thermal Overload Protection

Many Output Voltage Combinations

Available Fully Qualified to Mil-PRF-38534

Alternate Package and Lead Form Configurations Available

DESCRIPTION:

The MSK 5000 Series offers low dropout voltages on both the positive and negative regulators. This, combined

with the low θJC, allows increased output current while providing exceptional device efficiency. Because of the

increased efficiency, a small hermetic 5 pin package can be used providing maximum performance while occupying

minimal board space. Output voltages are internally trimmed to ±1% maximum resulting in consistent and accurate

operation. Additionally, both regulators offer internal short circuit current and thermal limiting, which allows circuit

protection and eliminates the need for external components and excessive derating.

EQUIVALENT SCHEMATIC

TYPICAL APPLICATIONS

PIN-OUT INFORMATION

High Efficiency Linear Regulators

Constant Voltage/Current Regulators

System Power Supplies

1 +Vin

2 +Vout

3 GND

4 -Vin

Switching Power Supply Post Regulators

5 -Vout

Rev. E 7/00

ABSOLUTE MAXIMUM RATINGS

±VIN

IOUT

Input Voltage (WRT VOUT)

Power Dissipation

Output Current

±30V

Internally Limited

±3A

TST

TLD

Storage Temperature Range

Lead Temperature Range

(10 Seconds)

Case Operating Temperature

MSK 5000-5009

-65°C to +150°C

300°C

Junction Temperature

+175°C

-40°C to +85°C

-55°C to +125°C

MSK 5000B-5009B

ELECTRICAL SPECIFICATIONS

MSK 5000(B) SERIES

Group A

MSK 5000 SERIES

Parameter

Test Conditions

Units

Typ.

Min.

Max.

Typ.

Subgroup

Min.

Max.

POSITIVE OUTPUT REGULATORS:

0.1

1.3

0.2

0.3

0.1

0.2

1.0

2.0

1.5

0.1

Output Voltage Tolerance

IOUT=0A; VIN=VOUT+3V

2.0

2,3

1.6

1.3

0.2

Dropout Voltage

Load Regulation

0A≤IOUT≤3A; ∆VOUT=50mV

100mA≤IOUT≤3A

2,3

VIN=VOUT+3V

0.5

.75

0.1

Line Regulation

IOUT=0A

0.6

2,3

(VOUT+3V)≤VIN≤(VOUT+15V)

VIN=VOUT+3V; IOUT=0A

VIN=VOUT+5V

1,2,3

Quiescent Current

Short Circuit Current

Ripple Rejection

3.2

3.0

2.5

IOUT=3A; COUT=25µF; f=120Hz

JUNCTION TO CASE

2.5

2.7

Thermal Resistance

2.7 °C/W

NEGATIVE OUTPUT REGULATORS:

0.1

0.8

0.2

0.3

1.0

2.0

1.2

0.1

2.0

Output Voltage Tolerance

IOUT=0A; VIN=VOUT+3V

2,3

1.3

0.8

0.2

Dropout Voltage

Load Regulation

0A≤IOUT≤3A; ∆VOUT=50mV

VIN=VOUT+3V

2,3

100mA≤IOUT≤3A

.75

Line Regulation

IOUT=0A

2,3

(VOUT+3V)≤VIN≤(VOUT+15V)

VIN=VOUT+3V; IOUT=0A

VIN=VOUT+5V

4.5

3.6

4.5

3.6

2.0

1,2,3

Quiescent Current

3.3

3.0

Short Circuit Current

Ripple Rejection

IOUT=3A; COUT=25µF; f=120Hz

JUNCTION TO CASE

°C/W

2.0

2.2

Thermal Resistance

2.2

OUTPUT VOLTAGES

POSITIVE NEGATIVE

PART

NUMBER

MSK5000(B)

MSK5001(B)

MSK5002(B)

MSK5003(B)

MSK5004(B)

MSK5005(B)

MSK5006(B)

MSK5007(B)

MSK5008(B)

MSK5009(B)

+3.3V

-5.2V

Outputs are decoupled to ground using 10µF minimum

low ESR capacitors unless otherwise specified.

This parameter is guaranteed by design but need not be tested.

+5.0V

-5.0V

+5.0V

-5.2V

Typical parameters are representative of actual device performance but are for reference only.

All output parameters are tested using a low duty cycle pulse to maintain T^J= TC.

Industrial grade devices shall be tested to subgroup 1 unless otherwise specified.

Military grade devices ('B' suffix) shall be 100% tested to subgroups 1,2 and 3.

Subgroup 1 TA=TC=+25°C

+12.0V

+15.0V

+5.0V

-5.0V

-12.0V

-15.0V

-5.0V

Subgroup 2 TA=TC=+125°C

Subgroup 3 TA=TC=-55°C

Please consult the factory if alternate output voltages are required.

Input voltage (VIN= VOUT + a specified voltage) is implied to be more negative than VOUT.

-12.0V

-15.0V

-10.0V

+5.0V

+10.0V

Rev. E 7/00

APPLICATION NOTES

BYPASS CAPACITORS

OVERLOAD SHUTDOWN

For most applications a 10uF minimum, low ESR (0.5-2 ohm)

tantalum capacitor should be attached as close to the regulator's

output as possible. This will effectively lower the regulator's

output impedance, increase transient response and eliminate any

oscillations that are normally associated with low dropout regu-

lators. Additional bypass capacitors can be used at the remote

load locations to further improve regulation. These can be either

of the tantalum or the electrolytic variety. Unless the regulator

is located very close to the power supply filter capacitor(s), a

4.7uF minimum low ESR (0.5-2 ohm) tantalum capacitor should

also be added to the regulator's input. An electrolytic may also

be substituted if desired. When substituting electrolytic in place

of tantalum capacitors, a good rule of thumb to follow is to

increase the size of the electrolytic by a factor of 10 over the

tantalum value.

The regulators feature both power and thermal overload pro-

tection. When the maximum power dissipation is not exceeded,

the regulators will current limit slightly above their 3 amp rating.

As the Vin-Vout voltage increases, however, shutdown occurs in

relation to the maximum power dissipation curve. If the device

heats enough to exceed its rated die junction temperature due to

excessive ambient temperature, improper heat sinking etc., the

regulators also shutdown until an appropriate junction tempera-

ture is maintained. It should also be noted that in the case of an

extreme overload, such as a sustained direct short, the device

may not be able to recover. In these instances, the device must

be shut off and power reapplied to eliminate the shutdown con-

dition.

HEAT SINKING

To determine if a heat sink is required for your application

and if so, what type, refer to the thermal model and govern-

ing equation below.

LOAD REGULATION

For best results the ground pin should be connected directly to

the load as shown below, this effectively reduces the ground

loop effect and eliminates excessive voltage drop in the sense

leg. It is also important to keep the output connection between

the regulator and the load as short as possible since this directly

affects the load regulation. For example, if 20 gauge wire were

used which has a resistance of about .008 ohms per foot, this

would result in a drop of 8mV/ft at 1Amp of load current. It is

also important to follow the capacitor selection guidelines to

achieve best performance. Refer to Figure 2 for connection dia-

gram.

Governing Equation: Tj = Pd x (Rθjc + Rθcs + Rθsa) + Ta

WHERE

Tj = Junction Temperature

Pd = Total Power Dissipation

R^θjc = Junction to Case Thermal Resistance

Rθcs = Case to Heat Sink Thermal Resistance

R^θsa = Heat Sink to Ambient Thermal Resistance

Tc = Case Temperature

Ta = Ambient Temperature

Ts = Heat Sink Temperature

MSK 5002 TYPICAL APPLICATION:

Low Dropout Positive and Negative Power Supply

EXAMPLE:

This example demonstrates an analysis where each regulator

is at one-half of its maximum rated power dissipation, which

occurs when the output currents are at 1.5 amps each.

Conditions for MSK 5002:

Vin = ±7.0V; Iout = ±1.5A

1.) Assume 45° heat spreading model.

2.) Find positive regulator power dissipation:

FIGURE 1

Pd = (Vin - Vout)(Iout)

Pd = (7-5)(1.5)

= 3.0W

Avoiding Ground Loops

3.) For conservative design, set Tj = +125°C Max.

4.) For this example, worst case Ta = +90°C.

5.) Rθjc = 2.5°C/W from the Electrical Specification Table.

6.) Rθcs = 0.15°C/W for most thermal greases.

7.) Rearrange governing equation to solve for Rθsa:

Rθsa= ((Tj - Ta)/Pd) - (Rθjc) - (Rθcs)

(125°C - 90°C)/3.0W - (2.5°C/W - 0.15°C/W)

9.32°C/W

The same exercise must be performed for the negative regula-

tor. In this case the result is 9.32°C/W. Therefore, a heat sink

with a thermal resistance of no more than 9.3°C/W must be

used in this application to maintain both regulator circuit junc-

tion temperatures under 125°C.

FIGURE 2

Rev.E 7/00

TYPICAL PERFORMANCE CURVES

Rev. E 7/00

MECHANICAL SPECIFICATIONS

NOTE: ESD Triangle indicates Pin 1.

ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED

ORDERING INFORMATION

MSK5000 B T U

LEAD CONFIGURATIONS

S= STRAIGHT; U= BENT UP; D= BENT DOWN

PACKAGE STYLE

T= TOP TAB; Z= Z PACK

SCREENING

BLANK = INDUSTRIAL; B= MIL-PRF-38534

GENERAL PART NUMBER

(VOLTAGE)

THE ABOVE EXAMPLE IS A: +3.3V, -5.2V MILITARY REGULATOR USING THE

TOP TAB PACKAGE WITH LEADS BENT UP.

M.S. Kennedy Corp.

4707 Dey Road, Liverpool, New York 13088

Phone (315) 701-6751

FAX (315) 701-6752

www.mskennedy.com

The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make

changes to its products or specifications without notice, however, and assumes no liability for the use of its products.

Rev.E 7/00

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