LX8384-00 datasheet(3/8 Pages) MICROSEMI

Part #	LX8384-00

Description	5A LOW DROPOUT POSITIVE REGULATORS

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Manufacturer	MICROSEMI [Microsemi Corporation]

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5A L OW D ROPOUT P OSITIVE R EGULA TORS

LX8384-xx/8384A-xx/8384B-xx

PRODUCT DA T ABOOK 1996/1997

3

Rev. 1.9

12/97

P RODUCTION

D ATA

S HEET

ELECTRICAL CHARACTERISTICS

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8384-xxC/8384A-xxC/8384B-xxC with

0°C

≤ T

A ≤ 125°C, and the LX8384-xxI with -25°C ≤ TA ≤ 125°C; VIN - VOUT = 3V; IOUT = 5A.

Low duty cycle pulse testing techniques are used which

maintains junction and case temperatures equal to the ambient temperature.)

Parameter

Symbol

Test Conditions

Units

LX8384/84A/84B-00

Min.

Typ.

Max.

Reference Voltage

LX8384/84A-00

V

REF

I

OUT = 10mA,

T

A = 25°C

(Note 4)

10mA

≤ I

OUT ≤ 5A, 1.5V ≤ (VIN - VOUT), VIN ≤ 10V, P ≤ PMAX

LX8384B-00

I

OUT = 10mA,

T

A = 25°C

10mA

≤ I

OUT ≤ 5A, 1.5V ≤ (VIN - VOUT), VIN ≤ 10V, P ≤ PMAX

Line Regulation (Note 2)

∆V

REF

1.3V

≤ (V

IN - V OUT), VIN ≤ 7V, IOUT = 10mA

(V

IN )

1.3V

≤ (V

IN - VOUT ), VIN ≤ 10V, IOUT = 10mA

Load Regulation (Note 2)

∆V

REF (IOUT)

V

OUT ≥ V REF, VIN - VOUT = 3V, 10mA ≤ IOUT ≤ 5A

Thermal Regulation

∆V

OUT(Pwr)

T

A = 25°C, 20ms pulse

Ripple Rejection (Note 3)

V

OUT =

5V, f =120Hz, C

OUT = 100µf

Tantalum, V

IN = 6.5V

C

ADJ = 10µF, I OUT = 5A

Adjust Pin Current

I

ADJ

Adjust Pin Current Change (Note 4)

∆I

ADJ

10mA

≤ I

OUT ≤ IOUT (MAX) , 1.3V ≤ (VIN - VOUT), VIN ≤ 10V

Dropout Voltage

LX8384-00

∆V

REF = 1%, IOUT = 5A

LX8384A/84B-00

∆V

REF = 1%, IOUT = 5A

Minimum Load Current

I

OUT (MIN)

V

IN ≤ 10V

Maximum Output Current

I

OUT (MAX)

(V

IN - VOUT) ≤ 7V

(V

IN - VOUT) ≤ 10V

Temperature Stability (Note 3)

∆V

OUT (T)

Long Term Stability (Note 3)

∆V

OUT (t)

T

A = 125°C, 1000 hours

RMS Output Noise (% of V

OUT) (Note 3)

V

OUT (RMS)

T

A = 25°C, 10Hz ≤ f ≤ 10kHz

1.238

1.250

1.262

V

1.225

1.250

1.270

V

1.240

1.250

1.260

V

1.238

1.250

1.262

V

0.015

0.2

%

0.035

0.3

%

0.15

0.5

%

0.01

0.02

%/W

65

83

dB

20

55

100

µA

0.2

5

µA

1.2

1.5

V

1.1

1.3

V

210

mA

56

A

34

A

0.25

%

0.3

1

%

0.003

%

Note 2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to

heating effects are covered under the specification for thermal regulation.

Note 3. These parameters, although guaranteed, are not tested in production.

Note 4. See Maximum Output Current Section above.

Parameter

Symbol

Test Conditions

Units

LX8384/84A/84B-15

Min.

Typ.

Max.

Output Voltage

LX8384/84A-15

V

OUT

V

IN = 5V, IOUT = 0mA, TA = 25°C

(Note 4)

4.75V

≤ V

IN ≤

10V, 0mA

≤ I

OUT ≤ 5A, P ≤ PMAX

LX8384B-15

V

IN = 5V, IOUT = 0mA, TA = 25°C

4.75V

≤ V

IN ≤

10V, 0mA

≤ I

OUT ≤ 5A, P ≤ PMAX

Line Regulation (Note 2)

∆V

OUT

4.75V

≤ V

IN ≤ 7V

(V

IN )

4.75V

≤ V

IN ≤ 10V

Load Regulation (Note 2)

∆V

OUT (IOUT)

V

IN = 5V, 0mA ≤ IOUT ≤ IOUT (MAX)

Thermal Regulation

∆V

OUT(Pwr)

T

A = 25°C, 20ms pulse

Ripple Rejection (Note 3)

C

OUT = 100µF (Tantalum), IOUT = 5A

Quiescent Current

I

Q

0mA

≤ I

OUT ≤ IOUT (MAX) , 4.75V ≤ VIN ≤ 10V

Dropout Voltage

LX8384-15

∆V

OUT = 1%, IOUT ≤ IOUT (MAX)

LX8384A/84B-15

∆V

OUT = 1%, IOUT ≤ IOUT (MAX)

Maximum Output Current

I

OUT (MAX)

V

IN ≤ 7V

Temperature Stability (Note 3)

∆V

OUT (T)

Long Term Stability (Note 3)

∆V

OUT (t)

T

A = 125°C, 1000 hours

RMS Output Noise (% of V

OUT) (Note 3)

V

OUT (RMS)

T

A = 25°C, 10Hz ≤ f ≤ 10kHz

1.485

1.50

1.515

V

1.470

1.50

1.530

V

1.488

1.50

1.512

V

1.485

1.50

1.515

V

13

mV

15

mV

2.5

7

mV

0.01

0.02

% / W

60

83

dB

410

mA

1.2

1.5

V

1

1.3

V

56

A

0.25

%

0.3

1

%

0.003

%

LX8384-00 / 8384A-00 / 8384B-00 (Adjustable)

LX8384-15 / 8384A-15 / 8384B-15 (1.5V Fixed)

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