LP38693-Q1 datasheet(5/34 Pages) TI

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LP38691, LP38693, LP38691-Q1, LP38693-Q1

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SNVS321N – JANUARY 2005 – REVISED MARCH 2015

7.5 Thermal Information

LP38691

LP38693

LP3869x

THERMAL METRIC(1)

TO-252

WSON

SOT-223

UNIT

3 PINS

6 PINS

5 PINS

RθJA

(2)

Junction-to-ambient thermal resistance

50.5

50.6

68.5

RθJC(top)

Junction-to-case (top) thermal resistance

52.6

44.4

52.2

RθJB

Junction-to-board thermal resistance

29.7

24.9

13.0

°C/W

ψJT

Junction-to-top characterization parameter

4.8

0.4

5.5

ψJB

Junction-to-board characterization parameter

29.3

25.1

12.8

RθJC(bot)

Junction-to-case (bottom) thermal resistance

1.5

5.4

n/a

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

(2)

Junction-to-ambient thermal resistance, High-K.

7.6 Electrical Characteristics

Unless otherwise specified, limits apply for TJ = 25°C, VIN = VOUT + 1 V, CIN = COUT = 10 µF, ILOAD = 10 mA. Minimum and

maximum limits are specified through testing, statistical correlation, or design.

PARAMETER

TEST CONDITIONS

MIN

TYP(1)

MAX

UNIT

–2

100 µA < IL < 0.5 A

Output voltage tolerance

%VOUT

VO + 1 V ≤ VIN ≤ 10 V

–4

Full operating temperature range

ΔVO/ΔVIN

Output voltage line

VO + 0.5 V ≤ VIN ≤ 10 V

0.03

regulation(2)

IL = 25 mA

%/V

VO + 0.5 V ≤ VIN ≤ 10 V

IL = 25 mA

0.1

Full operating temperature range

ΔVO/ΔIL

Output voltage load

1 mA < IL < 0.5 A

1.8

regulation(3)

VIN = VO + 1 V

%/A

1 mA < IL < 0.5 A

VIN = VO + 1 V

Full operating temperature range

IL = 0.1 A

(VO = 2.5 V)

IL = 0.5 A

430

(VO = 2.5 V)

IL = 0.1 A

145

Full operating temperature

IL = 0.5 A

725

range

IL = 0.1 A

(VO = 3.3 V)

IL = 0.5 A

330

VIN – VOUT Dropout voltage

(4)

(VO = 3.3 V)

IL = 0.1 A

110

Full operating temperature

IL = 0.5 A

550

range

IL = 0.1 A

(VO = 5 V)

IL = 0.5 A

250

(VO = 5 V)

IL = 0.1 A

100

Full operating temperature

IL = 0.5 A

450

range

(1)

Typical numbers represent the most likely parametric norm for 25°C operation.

(2)

Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage.

(3)

Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from 1 mA to

full load.

(4)

Dropout voltage is defined as the minimum input to output differential required to maintain the output within 100 mV of nominal value.

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