TPS62736_15 datasheet(6/37 Pages) TI

No de pièce	TPS62736

Description	TPS6273x Programmable Output Voltage Ultra-Low Power Buck Converter With Up to 50 mA / 200 mA Output Current

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Fabricant	TI [Texas Instruments]

Site Internet	http://www.ti.com

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TPS62736, TPS62737

SLVSBO4C – OCTOBER 2012 – REVISED DECEMBER 2014

www.ti.com

8.5 Electrical Characteristics

Over recommended ambient temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply

for conditions of VIN = 4.2 V, VOUT = 1.8 V External components, CIN = 4.7 µF for TPS62736 and 22 µF for TPS62737,

LBUCK = 10 µH, COUT = 22 µF.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

QUIESCENT CURRENTS

TPS62736 Buck enabled state

380

550

(EN1 = 0, EN2 = 1)

TPS62736 Buck disabled VIN_OK active state

nA

340

520

(EN1 = 0, EN2 = 0)

TPS62736 Ship mode state (EN1 = 1, EN2 = x)

10

65

IQ

VIN = 2 V, No load on VOUT

TPS62737 Buck enabled state

375

600

(EN1 = 0, EN2 = 1)

TPS62737 Buck disabled VIN_OK active state

nA

345

560

(EN1 = 0, EN2 = 0)

TPS62737 Ship mode state (EN1 = 1, EN2 = x)

11

45

OUTPUT

VBIAS

Output regulation reference

1.205

1.21

1.217

V

IOUT = 10 mA;

TPS62736 Output regulation (Spec does not include

–2%

0%

2%

the resistor accuracy error)

1.3 V < VOUT < 3.3 V

IOUT = 100 mA;

TPS62737 Output regulation (Spec does not include

–2%

0%

2%

the resistor accuracy error)

1.3 V < VOUT < 3.3 V;

IOUT = 100 µA;

TPS62736 Output line regulation

0.01

VIN = 2.4 V to 5.5 V

%/V

IOUT = 10 mA;

TPS62737 Output line regulation

0.31

VIN = 2.3 V to 5.5 V

IOUT = 100 µA to 50 mA,

VOUT

TPS62736 Output load regulation

0.01

%/mA

VIN = 2.2 V

IOUT = 100 µA to 200 mA,

TPS62737 Output load regulation

0.01

%/mA

VIN = 2.2 V; –20°C < TA < 85°C

VIN = 4.2V, IOUT = 1 mA,

TPS62736 Output ripple

20

mVpp

COUT = 22 μF

VIN = 4.2 V, IOUT = 1 mA,

TPS62737 Output ripple

40

mVpp

COUT = 22 μF

Programmable voltage range for output voltage

IOUT = 10 mA

1.3

VIN – 0.2

V

threshold

VIN = 2.1 V, VOUT(SET) = 2.5 V,

TPS62736 Drop-out-voltage when VIN is less than

24

30

mV

VOUT(SET)

IOUT = 10 mA, 100% duty cycle

VDO

VIN = 2.1 V, VOUT(SET) = 2.5 V,

TPS62737 Drop-out-voltage when VIN is less than

180

220

mV

VOUT(SET)

IOUT = 100 mA, 100% duty cycle

TPS62736, COUT = 22 µF

400

μs

Startup time with EN1 low and EN2 transition to high

tSTART-STBY

(Standby Mode)

TPS62737, COUT = 22 µF

300

μs

tSTART-SHIP

Startup time with EN2 high and EN1 transition from

COUT = 22 µF

100

ms

high to low (Ship Mode)

6

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