LD1085 datasheet(9/27 Pages) STMICROELECTRONICS

部件名	LD1085

功能描述	3A Low drop positive voltage regulator adjustable and fixed

PDF	27 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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9 / 27 page

LD1085 series

Electrical characteristics

9/27

Table 6.

Electrical characteristics of LD1085#33

(VI=6.3V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified).

Symbol

Parameter

Test

Min.

Typ.

Max.

Unit

Output voltage (1)

IO = 0 mA, TJ = 25°C

3.267

3.3

3.333

IO = 0 to 3A, VI = 4.9 to 30V

3.234

3.35

3.366

ΔVO

Line regulation

IO = 0 mA, VI = 4.9 to 18V, TJ = 25°C

0.5

IO = 0 mA, VI = 4.9 to 18V

ΔVO

Load regulation

IO = 0 to 3A, TJ = 25°C

IO = 0 to 3A

Dropout voltage

IO = 3A

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 = 25µF, IO = 3A

VI = 8.3 ± 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

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

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