LD1085D2M-R datasheet(3/19 Pages) STMICROELECTRONICS

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LD1085 SERIES

3/19

Table 3: Thermal Data

Figure 3: Application Circuits

Table 4: Electrical Characteristics Of LD1085#15 (VI=4.5V, CI = CO =10µF, TA = -40 to 125°C, unless

otherwise specified.)

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

Symbol

Parameter

TO-220

D2PAK

Unit

Rthj-case

Thermal Resistance Junction-case

°C/W

Rthj-amb

Thermal Resistance Junction-ambient

62.5

°C/W

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Output Voltage

IO = 0 mA TJ = 25°C

1.485

1.5

1.515

IO = 0 to 5AVI = 3.1 to 30V (note 1)

1.47

1.5

1.53

∆VO

Line Regulation

IO = 0 mA VI = 3.1 to 18V TJ = 25°C

0.2

IO = 0 mA VI = 3.1 to 15V

0.4

∆VO

Load Regulation

IO = 0 to 3ATJ = 25°C

IO = 0 to 3A

Dropout Voltage

IO =3 A

1.3

1.5

Quiescent Current

VI ≤ 30V

Isc

Short Circuit Current

VI - VO = 5V

3.2

4.5

VI - VO = 25V

0.2

0.5

Thermal Regulation

TA = 25°C, 30ms pulse

0.008

0.04

%/W

SVR

Supply Voltage Rejection

f = 120 Hz, CO = 25 µF,

IO = 3A

VI = 7.5 ± 3V

RMS Output Noise Voltage

(% of VO)

TA = 25°C f =10Hz to 10KHz

0.003

Temperature Stability

0.5

Long Term Stability

TA = 125°C 1000Hrs

0.5

VO = VREF (1 + )

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