TPS73701DCQ datasheet(3/22 Pages) TI

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ELECTRICAL CHARACTERISTICS

TPS737xx

www.ti.com.................................................................................................................................................... SBVS067I – JANUARY 2006 – REVISED MARCH 2009

Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(nom) + 1.0V

(1), I

OUT = 10mA, VEN = 2.2V, and

COUT = 2.2µF, unless otherwise noted. Typical values are at TJ = +25°C.

TPS737xx

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIN

Input voltage range(1),(2)

2.2

5.5

Internal reference

TJ = +25°C

1.198

1.2

1.210

(TPS73701-DCQ)

VFB

Internal reference

TJ = +25°C

1.192

1.2

1.216

(TPS73701-DRB)

Output voltage range

VFB

5.5 – VDO

(TPS73701)(3)

Nominal

TJ = +25°C

–1.0

+1.0

5.36V < VIN < 5.5V, VOUT = 5.08V,

VOUT

10mA < IOUT < 800mA,

–2.0

+2.0

Accuracy(1),(4)

–40C < TJ < +85°C, TPS73701DCQ

over VIN, IOUT,

VOUT + 0.5V ≤ VIN ≤ 5.5V;

–3.0

±0.5

+3.0

and T

10mA

≤ IOUT ≤ 1A

ΔVOUT%/ΔVIN

Line regulation(1)

VOUT(nom) + 0.5V ≤ VIN ≤ 5.5V

0.01

%/V

1mA

≤ IOUT ≤ 1A

0.002

ΔVOUT%/ΔIOUT

Load regulation

%/mA

10mA

≤ IOUT ≤ 1A

0.0005

Dropout voltage(5)

VDO

IOUT = 1A

130

500

(VIN = VOUT(nom) – 0.1V)

ZO(DO)

Output impedance in dropout

2.2V

≤ VIN ≤ VOUT + VDO

0.25

Ω

ICL

Output current limit

VOUT = 0.9 × VOUT(nom)

1.05

1.6

2.2

ISC

Short-circuit current

VOUT = 0V

450

IREV

Reverse leakage current(6) (–IIN)

VEN ≤ 0.5V, 0V ≤ VIN ≤ VOUT

0.1

µA

IOUT = 10mA (IQ)

400

IGND

GND pin current

µA

IOUT = 1A

1300

ISHDN

Shutdown current (IGND)

VEN ≤ 0.5V, VOUT ≤ VIN ≤ 5.5

IFB

FB pin current (TPS73701)

0.1

0.6

µA

f = 100Hz, IOUT = 1A

Power-supply rejection ratio

PSRR

(ripple rejection)

f = 10kHz, IOUT = 1A

Output noise voltage

COUT = 10µF

27 × VOUT

µV

RMS

BW = 10Hz – 100KHz

tSTR

Startup time

VOUT = 3V, RL = 30Ω, COUT = 1µF

600

µs

VEN(HI)

EN pin high (enabled)

1.7

VIN

VEN(LO)

EN pin low (shutdown)

0.5

IEN(HI)

EN pin current (enabled)

VEN = 5.5V

Shutdown, temperature increasing

+160

TSD

Thermal shutdown temperature

°C

Reset, temperature decreasing

+140

Operating junction temperature

–40

+125

°C

(1)

Minimum VIN = VOUT + VDO or 2.2V, whichever is greater.

(2)

For VOUT(nom) < 1.6V, when VIN ≤ 1.6V, the output will lock to VIN and may result in an over-voltage condition on the output. To avoid this

situation, disable the device before powering down VIN.

(3)

TPS73701 is tested at VOUT = 1.2V.

(4)

Tolerance of external resistors not included in this specification.

(5)

VDO is not measured for fixed output versions with VOUT(nom) < 2.3V since minimum VIN = 2.2V.

(6)

Fixed-voltage versions only; refer to the Applications section for more information.

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