LD1085DT25R View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

LD1085DT25R

3A Low drop positive voltage regulator adjustable and fixed

STMicroelectronics 

LD1085 series

Electrical characteristics

Table 8.

Symbol

Electrical characteristics of LD1085#12

(VI=15V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified).

Parameter

Test

Min. Typ. Max. Unit

VO

ΔVO

ΔVO

Vd

Iq

Isc

SVR

eN

S

Output voltage (1)

IO = 0 mA, TJ = 25°C

IO = 0 to 3A, VI = 13.8 to 30V

Line regulation

IO = 0 mA, VI = 13.8 to 25V,

TJ = 25°C

IO = 0 mA, VI = 13.8 to 25V

Load regulation

IO = 0 to 3A, TJ = 25°C

IO = 0 to 3A

Dropout voltage

IO = 3A

Quiescent current

VI ≤30V

Short circuit current

VI - VO = 5V

VI - VO = 25V

Thermal regulation

TA = 25°C, 30ms pulse

Supply voltage rejection

f = 120 Hz, CO = 25µF, IO = 3A

VI = 17 ± 3V

RMS Output noise voltage (% of

VO)

TA = 25°C, f =10Hz to 10KHz

Temperature stability

S Long term stability

TA = 125°C, 1000Hrs

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

11.88 12 12.12 V

11.76 12 12.24 V

1

25 mV

2

25 mV

12 36 mV

24 72 mV

1.3 1.5

V

5

10 mA

3.2 4.5

A

0.2 0.5

A

0.008 0.04 %/W

54

66

dB

0.003

%

0.5

%

0.5

%

11/27

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