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LD1084D2T28-R

5A LOW DROP POSITIVE VOLTAGE REGULATOR ADJUSTABLE AND FIXED

STMicroelectronics 

LD1084 SERIES

Table 5: Electrical Characteristics Of LD1084#18 (VI=4.8V, CI = CO =10µF, TA = -40 to 125°C, unless

otherwise specified.)

Symbol

Parameter

Test Conditions

VO

∆VO

∆VO

Vd

Iq

Isc

SVR

eN

S

S

Output Voltage

Line Regulation

Load Regulation

Dropout Voltage

Quiescent Current

Short Circuit Current

Thermal Regulation

Supply Voltage Rejection

RMS Output Noise Voltage

(% of VO)

Temperature Stability

Long Term Stability

IO = 0 mA TJ = 25°C

IO = 0 to 5AVI = 3.4 to 30V (note 1)

IO = 0 mA VI = 3.4 to 18V TJ = 25°C

IO = 0 mA VI = 3.4 to 15V

IO = 0 to 5ATJ = 25°C

IO = 0 to 5A

IO =5 A

VI ≤ 30V

VI - VO = 5V

VI - VO = 25V

TA = 25°C, 30ms pulse

f = 120 Hz, CO = 25 µF,

VI = 6.8 ± 3V

IO = 5A

TA = 25°C f =10Hz to 10KHz

TA = 125°C 1000Hrs

Min.

1.782

1.764

5.5

0.5

60

Typ.

1.8

1.8

0.5

0.1

3

7

1.3

5

6.5

0.7

0.003

75

Max.

1.818

1.836

6

6

15

20

1.5

10

0.015

Unit

V

V

mV

mV

mV

mV

V

mA

A

A

%/W

dB

0.003

%

0.5

%

0.5

%

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

Table 6: Electrical Characteristics Of LD1084#25 (VI=5.5V, CI = CO =10µF, TA = -40 to 125°C, unless

otherwise specified.)

Symbol

Parameter

Test Conditions

VO

∆VO

∆VO

Vd

Iq

Isc

SVR

eN

S

S

Output Voltage

Line Regulation

Load Regulation

Dropout Voltage

Quiescent Current

Short Circuit Current

Thermal Regulation

Supply Voltage Rejection

RMS Output Noise Voltage

(% of VO)

Temperature Stability

Long Term Stability

IO = 0 mA TJ = 25°C

IO = 0 to 5AVI = 4.1 to 30V (note 1)

IO = 0 mA VI = 4.1 to 18V TJ = 25°C

IO = 0 mA VI = 4.1 to 18V

IO = 0 to 5ATJ = 25°C

IO = 0 to 5A

IO =5 A

VI ≤ 30V

VI - VO = 5V

VI - VO = 25V

TA = 25°C, 30ms pulse

f = 120 Hz, CO = 25 µF,

VI = 7.5 ± 3V

IO = 5A

TA = 25°C f =10Hz to 10KHz

TA = 125°C 1000Hrs

NOTE 1: See short-circuit current curve for available output current at fixed dropout.

Min.

2.475

2.45

5.5

0.5

60

Typ.

2.5

2.5

0.5

0.1

3

7

1.3

5

6.5

0.7

0.003

72

Max.

2.525

2.55

6

6

15

20

1.5

10

0.015

Unit

V

V

mV

mV

mV

mV

V

mA

A

A

%/W

dB

0.003

%

0.5

%

0.5

%

4/20

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