TPS65140-Q1 datasheet(5/25 Pages) TI1

Part #	TPS65140-Q1

Description	TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD

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Manufacturer	TI1 [Texas Instruments]

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DEVICE INFORMATION

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FB1

FB4

BASE

VIN

SW

PGND

SUP

PG

GND

FB3

EN

ENR

COMP

FB2

REF

GND

DRV

C1−

C1+

C2−/MODE

C2+

OUT3

PWP PACKAGE

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TPS65140-Q1

TPS65145-Q1

www.ti.com ................................................................................................................................................. SGLS277A – NOVEMBER 2004 – REVISED APRIL 2008

ELECTRICAL CHARACTERISTICS (continued)

VIN = 3.3 V, EN = VIN, Vo1 = 10 V, TA= -40°C to 85°C, typical values are at TA = 25C (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

D1 – D4 Shottky diode

Vd

ID1-D4 = 40 mA

610

720

mV

forward voltage

IO

Minimum output current

20

mA

10 V

≤ Vo1 ≤ 15 V, Iload = 10 mA,

Line regulation

0.56

%/V

Vo3 = 27 V

Load regulation

1 mA

≤ IO ≤ 20 mA, Vo3 = 27 V

0.05

%/mA

LINEAR REGULATOR CONTROLLER Vo4

Vo4

Output voltage

4.5 V

≤ VI ≤ 5.5 V; 10 mA ≤ IO ≤ 500 mA

3.2

3.3

3.4

V

VIN-Vo4-VBE≥ 0.5 V

(1)

13.5

19

Maximum base drive

IBASE

mA

current

VIN-Vo4-VBE≥ 0.75 V

(1)

20

27

Line regulation

4.75 V

≤ VI ≤ 5.5 V, Iload = 500 mA

0.186

%/V

Load regulation

1 mA

≤ IO ≤ 500 mA, VI = 5 V

0.064

%/A

Start up current

Vo4

≤ 0.8 V

11

20

25

mA

SYSTEM POWER GOOD (PG)

V(PG, VO1)

-12

-8.75% Vo1

-6

V

V(PG, VO2)

Power good threshold(2)

-13

-9.5% Vo2

-5

V

V(PG, VO3)

-11

-8% Vo3

-5

V

VOL

PG output low voltage

I(sink) = 500 A

0.3

V

IL

PG output leakage current

VPG = 5 V

0.001

1

µA

(1)

With VIN = supply voltage of the TPS65140, Vo4 = output voltage of the regulator, VBE = basis emitter voltage of external transistor.

(2)

The power good goes high when all three outputs (Vo1, Vo2, Vo3) are above their threshold. The power good goes low as soon as one

of the outputs is below their threshold.

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