LD1085D2M datasheet(13/28 Pages) STMICROELECTRONICS

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LD1085xx

Electrical characteristics

13/28

Table 10.

Electrical characteristics of LD1085PY (Automotive Grade)

(VI = 4.25 V, CI = CO =10 µF, TA = -40 to 125 °C, unless otherwise specified).

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Output voltage (1)

IO = 10 mA TA = 25°C

1.237

1.25

1.263

IO = 10 mA to 3 A, VI = 2.85 to 30 V

1.225

1.25

1.275

ΔVO

Line regulation

IO = 10 mA, VI = 2.85 to 16.5 V

0.035

0.2

ΔVO

Load regulation

IO = 0 to 3 A

0.2

0.4

Dropout voltage

IO = 3 A

1.3

1.5

IO(min)

Minimum load current

VI = 30 V

Isc

Short circuit current

VI - VO = 5 V, TA = 25°C

5.5

6.5

VI - VO = 25 V, TA = 25°C

0.5

0.7

Thermal regulation

TA = 25°C, 30 ms pulse

0.003

0.015

%/W

SVR

Supply voltage rejection

f = 120 Hz, CO = 25 µF,CADJ = 25 µF,

IO = 3 A, VI = 6.25 ± 3 V, TA = 25°C

IADJ

Adjust pin current

VI = 4.25 V, IO = 10 mA

120

µA

ΔIADJ

Adjust pin current change (1)

IO = 10 mA to 3 A, VI = 2.85 to 16.5 V

0.2

µA

RMS output noise voltage (%

of VO)

TA = 25°C, f =10 Hz to 10 kHz

0.003

Temperature stability

0.5

Long term stability

TA = 125°C, 1000 Hrs

0.5

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

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