LT1585A(RevA) 데이터 시트보기 (PDF) - Linear Technology

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LT1585A
(Rev.:RevA)

5A Low Dropout Fast Response Positive Regulators Adjustable and Fixed

Linear Technology 

LT1585A/LT1585A-3.3

ELECTRICAL CHARACTERISTICS

The ● denotes specificatons which apply over the specified temperature range, otherwise specifications are at TA = 25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

Ripple Rejection

LT1585A

f = 120Hz, COUT = 100µF Tant., (VIN – VOUT) = 3V,

IOUT = 5A

LT1585A-3.3 f = 120Hz, COUT = 100µF Tant., VIN = 6.3V,

IOUT = 5A

●

60

72

Thermal

Regulation

LT1585A

TA = 25°C, 30ms Pulse

LT1585A-3.3 TA = 25°C, 30ms Pulse

0.004

0.02

Temperature Stability

●

0.5

Long-Term Stability

RMS Output Noise

(% of VOUT)

Thermal Resistance

Junction to Case

LT1585A

TA = 125°C, 1000 Hrs.

TA = 25°C, 10Hz ≤ f ≤ 10kHz

T Package: Control Circuitry/Power Transistor

0.03

0.003

1.0

0.7/3.0

UNITS

dB

%/W

%

%

%

°C/ W

Note 1: See thermal regulation specifications for changes in output voltage

due to heating effects. Load and line regulation are measured at a constant

junction temperature by low duty cycle pulse testing.

Note 2: Line and load regulation are guaranteed up to the maximum power

dissipation 28.8W for the LT1585A in T package. Power dissipation is

determined by input/output differential and the output current. Guaranteed

maximum output power will not be available over the full input/output

voltage range.

Note 3: IFULL LOAD is defined as the maximum value of output load current

as a function of input-to-output voltage. IFULL LOAD is equal to 5A for the

LT1585A/LT1585A-3.3. The LT1585A has constant current limit with

changes in input-to-output voltage.

TYPICAL PERFORMANCE CHARACTERISTICS

LT1585A Dropout Voltage

vs Output Current

1.5

GUARANTEED

1.4 TEST POINTS

1.3

1.2

T = –5°C

1.1

1.0

T = 125°C

T = 25°C

0.9

0.8

0.7

0.6

0.5

0

1

2

3

4

5

OUTPUT CURRENT (A)

LT1585A • TPC01

LT1585A Short-Circuit Current

vs Temperature

6.0

5.5

5.0

4.5

4.0

–75 –50 –25 0 25 50 75 100 125 150 175

TEMPERATURE (°C)

LT1585A • TPC02

LT1585A Load Regulation

vs Temperature

0.10

∆I = 5A

0.05

0

–0.05

–0.10

–0.15

–0.20

–75 –50 –25 0 25 50 75 100 125 150 175

TEMPERATURE (°C)

LT1585A • TPC03

1585afa

3

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