MSK5810ERH [MSK]

Adjustable Positive LDO Regulator, 1.5V Min, 7V Max, 0.4V Dropout, CDFP20, HERMETICALLY SEALED, FP-20;


型号：	MSK5810ERH
厂家：	M.S. KENNEDY CORPORATION
描述：	Adjustable Positive LDO Regulator, 1.5V Min, 7V Max, 0.4V Dropout, CDFP20, HERMETICALLY SEALED, FP-20 CD 输出元件调节器
文件：	总9页 (文件大小：1354K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MIL-PRF-38534 CERTIFIED

RAD HARD ULTRA LOW

DROPOUT ADJUSTABLE

5810RH

POSITIVE LINEAR REGULATOR

4707 Dey Road Liverpool, N.Y. 13088

M.S.KENNEDY CORP.

(315) 701-6751

FEATURES:

Manufactured using

Space Qualified RH1573 Die

New "Harder" Version of MSK 5910RH

Total Dose Hardened to 300 Krads(Si) (Method 1019.7 Condition A)

Ultra Low Dropout for Reduced Power Consumption

External Shutdown/Reset Function

Latching Overload Protection

Adjustable Output Using Two External Resistors

Output Current Limit

Surface Mount Package Available with Lead Forming

Up to 5A Output Current

Available to DSCC SMD 5962F09216

ELDRS Tested to 100 Krads(Si) (Method 1019.7 Condition D)

Neutron Tested to 1.0x10¹² n/cm² (Method 1017.2)

DESCRIPTION:

The MSK 5810RH is a rad hard adjustable linear regulator capable of delivering 5.0 amps of output current. The

typical dropout is only 0.11 volts at 1 amp. An external shutdown/reset function is ideal for power supply sequencing.

This device also has latching overload protection that requires no external current sense resistor. The MSK 5810RH

is radiation hardened and specifically designed for many space/satellite applications. The device is packaged in a

hermetically sealed 20 pin flatpack that can be lead formed for surface mount applications.

EQUIVALENT SCHEMATIC

TYPICAL APPLICATIONS

PIN-OUT INFORMATION

Satellite System Power Supplies

Switching Power Supply Post Regulators

Constant Voltage/Current Regulators

Microprocessor Power Supplies

1 VINA

2 VINB

3 VINC

4 VIND

5 VINE

6 VBIAS

7 GND1

8 GND1

9 Latch

10 Shutdown

VOUTE

VOUTD

VOUTC

VOUTB

VOUTA

GND2

Rev. G 12/10

ABSOLUTE MAXIMUM RATINGS

VBIAS

Bias Supply Voltage

Supply Voltage

Output Current

Case Operating Temperature Range

MSK5810K/H/E RH

MSK5810RH

10.0V

TST

TLD

Storage Temperature Range -65°C to +150°C

VIN

IOUT

Lead Temperature Range

(10 Seconds)

300°C

Power Dissipation

Junction Temperature

See SOA Curve

150°C

-55°C to +125°C

-40°C to +85°C

ELECTRICAL SPECIFICATIONS

NOTES:

Unless otherwise specified, VBIAS=VIN=5.0V, R1=1.62K, VSHUTDOWN=0V and IOUT=10mA. IOUT is subtracted from IQ measurement. See typical application circuit.

Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.

Industrial grade and "E" suffix devices shall be tested to subgroups 1 and 4 unless otherwise requested.

Military grade devices ("H" suffix) shall be 100% tested to subgroups 1,2,3 and 4.

Subgroup 5 and 6 testing available upon request.

Subgroup 1,4 TC=+25°C

Subgroup 2,5 TC=+125°C

Subgroup 3,6 TA=-55°C

Output current limit is tested with a low duty cycle pulse to minimize junction heating and is dependent on the values of VIN, VOUT and case

temperature. See Typical Performance Curves.

Continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle.

Pre and post irradiation limits @ 25°C, up to 300Krad TID, are identical unless otherwise specified.

Reference DSCC SMD 5962F09216 for electrical specification for devices purchased as such.

Rev. G 12/10

APPLICATION NOTES

PIN FUNCTIONS

START UP OPTIONS

The MSK 5810RH starts up and begins regulating immediately

when VBIAS and VINare applied simultaneously. Applying VBIAS

before VIN starts the MSK 5810RH up in a disabled or latched

state. When starting in a latched state the device output can be

enabled either by pulling the latch pin low to drain the latch ca-

pacitor or pulsing the shutdown pin high. The shutdown pulse

duration is partially dependent upon the size of the latch capacitor

and should be characterized for each application; 30uS is typically

adequate for a 1uF latch capacitor at 25°C. A momentary high

pulse on the shutdown pin can be achieved using the RC circuit

below if VIN rises rapidly. The resistor and capacitor must be

selected based on the required pulse duration, the rise character-

istic of VIN and the shutdown pin threshold (see shutdown pin

threshold and current curves).

VIN A,B,C,D,E - These pins provide the input power connection to

the MSK 5810RH. This is the supply that will be regulated to the

output. All five pins must be connected for proper operation.

VBIAS - This pin provides power to all internal circuitry including

bias, start-up, thermal limit and overcurrent latch. VBIAS voltage

range is 2.9V to 7.5V. VBIAS should be kept greater than or equal

to VIN.

GND1 - Internally connected to input ground, these pins should be

connected externally by the user to the circuit ground and the

GND2 pins.

LATCH - The MSK 5810RH LATCH pin is used for both current

limit and thermal limit. A capacitor between the LATCH pin and

ground sets a time out delay in the event of an over current or

short circuit condition. The capacitor is charged to approximately

1.6V from a 7.2μA (nominal) current source. Exceeding the ther-

mal limit will charge the latch capacitor from a larger current source

for a near instant shutdown. Once the latch capacitor is charged

the device latches off until the latch is reset. Momentarily pull the

LATCH pin low, toggle the shutdown pin high then low or cycle

the power to reset the latch. Toggling the shutdown pin or cycling

the bias power both disable the device during the reset operation

(see SHUTDOWN pin description). Pulling the LATCH pin low im-

mediately enables the device for as long as the LATCH pin is held

low plus the time delay to re-charge the latch capacitor whether or

not the fault has been corrected. Disable the latch feature by tying

the LATCH pin low. With the LATCH pin held low the thermal limit

feature is disabled and the current limit feature will force the out-

put voltage to droop but remain active if excessive current is drawn.

The shutdown pin can be held high and pulled low after VINcomes

up or the latch pin held low and released after VIN comes up to

ensure automatic startup when applying VBIAS before VIN. Ei-

ther of the basic circuits below can be adapted to a variety of

applications for automatic start up when VBIAS rises before VIN.

SHUTDOWN - There are two functions to the SHUTDOWN pin. It

may be used to disable the output voltage or to reset the LATCH

pin. To activate the shutdown/reset functions the user must apply

a voltage greater than 1.3V to the SHUTDOWN pin. The output

voltage will turn on when the SHUTDOWN pin is pulled below the

threshold voltage. If the SHUTDOWN pin is not used, it should be

connected to ground.

FB - The FB pin is the inverting input of the internal error amplifier.

The non-inverting input is connected to an internal 1.265V refer-

ence. This error amplifier controls the drive to the output transistor

to force the FB pin to 1.265V. An external resistor divider is con-

nected to the output, FB pin and ground to set the output voltage.

GND2 - Internally connected to output ground, these pins should

be connected externally by the user to the circuit ground and the

GND1 pins.

OVERCURRENT LATCH-OFF/LATCH PIN CAPACITOR

SELECTION

VOUT A,B,C,D,E - These are the output pins for the device. All

five pins must be connected for proper operation.

As previously mentioned, the LATCH pin provides over cur-

rent/output short circuit protection with a timed latch-off circuit.

Reference the LATCH pin description note. The latch off time

out is determined with an external capacitor connected from the

LATCH pin to ground. The time-out period is equal to the time it

takes to charge this external capacitor from 0V to 1.6V. The

latch charging current is provided by an internal current source.

This current is a function of bias voltage and temperature (see

latch charging current curve). For instance, at 25°C, the latch

charging current is 7.2μA at VBIAS=3V and 8μA at VBIAS=7V.

In the latch-off mode, some additional current will be drawn

from the bias supply. This additional latching current is also a

function of bias voltage and temperature (see typical performance

curves).

OUTPUT CAPACITOR SELECTION

Output capacitors are required to maintain regulation and stabil-

ity. Between 440 and 1000μF surface mount, low ESR tantalum

capacitor from the output to ground should suffice under most

conditions. See typical application circuit for recommended val-

ues. Ceramic output capacitors (0.1μF typical) should be placed

directly across the load power connections as close to the load as

possible.

POWER SUPPLY BYPASSING

To maximize transient response and minimize power supply tran-

sients it is recommended that a 33μF minimum tantalum capacitor

is connected between VIN and ground. A 0.1μF ceramic capacitor

should also be used for high frequency bypassing.

The MSK 5810RH current limit function is directly affected by

the input and output voltages. Custom current limit is available;

contact the factory for more information.

Rev. G 12/10

TYPICAL APPLICATIONS CIRCUIT

APPLICATION NOTES CONT.

THERMAL LIMITING

The MSK 5810RH control circuitry has a thermal shut-

down temperature of approximately 150°C. This ther-

mal shutdown can be used as a protection feature, but

for continuous operation, the junction temperature of the

pass transistor must be maintained below 150°C. Proper

heat sink selection is essential to maintain these condi-

tions. Exceeding the thermal limit activates the latch fea-

ture of the MSK 5810RH. See LATCH pin description for

instructions to reset the latch or disable the latch fea-

ture.

HEAT SINK SELECTION

To select a heat sink for the MSK 5810RH, the follow-

ing formula for convective heat flow may be used.

VOUT=1.265(1+R1/R2)

OUTPUT VOLTAGE SELECTION

Governing Equation:

TJ = PD X (RθJC + RθCS + RθSA) + TA

As noted in the above typical applications circuit,

the formula for output voltage selection is

Where

= Junction Temperature

= Total Power Dissipation

VOUT=1.265

RθJC = Junction to Case Thermal Resistance

RθCS = Case to Heat Sink Thermal Resistance

RθSA = Heat Sink to Ambient Thermal Resistance

A good starting point for this output voltage selection is

to set R2=1K. By rearranging the formula it is simple to

calculate the final R1 value.

= Ambient Temperature

VOUT

1.265

R1=R2

-1

Power Dissipation=(VIN-VOUT) x IOUT

START UP CURRENT

Next, the user must select a maximum junction tem-

perature. The absolute maximum allowable junction tem-

perature is 150°C. The equation may now be rearranged

to solve for the required heat sink to ambient thermal

resistance (RθSA).

The MSK 5810RH sinks increased current during startup

to bring up the output voltage. Reference the "Saturated

Drive Current vs. Input Voltage" graph in the typical per-

formance curves of this data sheet and the "Understand-

ing Startup Surge Current With MS Kennedy's RH1573

Based Rad Hard LDO Regulators" application note in the

application notes section of the MS Kennedy Web site

for more information.

Example:

An MSK 5810RH is connected for VIN=+5V and

VOUT=+3.3V. IOUT is a continuous 1A DC level. The

ambient temperature is +25°C. The maximum desired

junction temperature is +125°C.

http://www.mskennedy.com/

RθJC=8.5°C/W and RθCS=0.15°C/W for most thermal

TOTAL DOSE RADIATION TEST

PERFORMANCE

greases

Power Dissipation=(5V-3.3V) x (1A)

=1.7Watts

Radiation performance curves for TID testing have been

generated for all radiation testing performed by MS

Kennedy. These curves show performance trends through-

out the TID test process and can be located in the MSK

5810RH radiation test report. The complete radiation test

report is available in the RAD HARD PRODUCTS section

on the MSK website.

Solve for RθSA:

125°C - 25°C

1.7W

RθSA=

-8.4°C/W - 0.15°C/W

= 50.3°C/W

http://www.mskennedy.com/store.asp?pid=9951&catid=19680

In this example, a heat sink with a thermal resistance

of no more than 50°C/W must be used to maintain a

junction temperature of no more than 125°C.

Reference the MSK 5826RH RAD REPORT for ELDRS

and Neutron results.

Rev. G 12/10

TYPICAL PERFORMANCE CURVES

Rev. G 12/10

TYPICAL PERFORMANCE CURVES

GAIN AND PHASE RESPONSE

The gain and phase response curves are for the MSK typical application circuit and are representative of typical device

performance, but are for reference only. The performance should be analyzed for each application to insure individual

program requirements are met. External factors such as temperature, input and output voltages, capacitors, etc. all

can be major contributors. Please consult factory for additional details.

Rev. G 12/10

TYPICAL PERFORMANCE CURVES CONT'D

GAIN AND PHASE RESPONSE

The gain and phase response curves are for the MSK typical application circuit and are representative of typical device

performance, but are for reference only. The performance should be analyzed for each application to insure individual

program requirements are met. External factors such as temperature, input and output voltages, capacitors, etc. all

can be major contributors. Please consult factory for additional details.

Rev. G 12/10

MECHANICAL SPECIFICATIONS

WEIGHT=3.5 GRAMS TYPICAL

NOTE: ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED.

ESD Triangle indicates pin 1.

ORDERING INFORMATION

SCREENING LEVEL

PART NUMBER

LEADS

INDUSTRIAL

MSK5810RH

MSK5810ERH

EXTENDED RELIABILITY

STRAIGHT

MIL-PRF-38534 CLASS H

MIL-PRF-38534 CLASS K

DSCC SMD

MSK5810HRH

MSK5810KRH

5962F09216

Rev. G 12/10

MECHANICAL SPECIFICATIONS CONTINUED

WEIGHT=3.3 GRAMS TYPICAL

ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED.

ESD Triangle indicates pin 1.

ORDERING INFORMATION

SCREENING LEVEL

PART NUMBER

LEADS

INDUSTRIAL

MSK5810RHG

MSK5810ERHG

EXTENDED RELIABILITY

GULL

WING

MIL-PRF-38534 CLASS H

MIL-PRF-38534 CLASS K

DSCC SMD

MSK5810HRHG

MSK5810KRHG

5962F09216

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.

Please visit our website for the most recent revision of this datasheet.

Rev. G 12/10

MSK5810ERH [MSK]

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