TPS79530DCQ datasheet(3/15 Pages) TI

Part #	TPS79530DCQ

Description	ULTRALOW-NOISE, HIGH PSRR, FAST RF 500-mA LOW-DROPOUT LINEAR REGULATORS

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Manufacturer	TI [Texas Instruments]

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ELECTRICAL CHARACTERISTICS

TPS79501, TPS79516

TPS79518, TPS79525

TPS79530, TPS79533

SLVS350C – OCTOBER 2002 – REVISED JANUARY 2005

Over recommended operating temperature range (T

J = -40°C to 125°C), VEN = VIN, VIN = VOUT(nom) + 1 V, IOUT = 1mA,

C

OUT = 10µF, CNR = 0.01 µF, unless otherwise noted. Typical values are at 25°C.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input voltage, VIN(1)

2.7

5.5

V

Continuous output current, IOUT

0

500

mA

TPS79516

0 µA< IOUT < 500 mA,

2.6 V < VIN < 5.5 V

1.568

1.6

1.632

TPS79518

0 µA< IOUT < 500 mA,

2.8 V < VIN < 5.5 V

1.764

1.8

1.836

Output voltage

TPS79525

0 µA< IOUT < 500 mA,

3.5 V < VIN < 5.5 V

2.45

2.5

2.55

V

TPS79530

0 µA< IOUT < 500 mA,

4 V < VIN < 5.5 V

2.94

3.0

3.06

TPS79533

0 µA< IOUT < 500 mA,

4.3 V < VIN < 5.5 V

3.234

3.3

3.366

Output voltage line regulation (

∆V

OUT%/∆VIN)

(1)

VOUT + 1 V < VIN ≤ 5.5 V

0.05

0.12

%/V

Load regulation (

∆V

OUT%/∆IOUT)

0 µA < IOUT < 500 mA,

TJ = 25°C

3

mV

TPS79530

IOUT = 500 mA

110

170

Dropout voltage(2)

mV

VIN = VOUT(nom) - 0.1 V

TPS79533

IOUT = 500 mA

105

160

Output current limit

VOUT = 0 V

2.4

2.8

4.2

A

Ground pin current

0 µA< IOUT < 500 mA

265

385

µA

Shutdown current(3)

VEN = 0 V,

2.7 V < VIN < 5.5 V

0.07

1

µA

FB pin current

VFB = 1.8 V

1

µA

f = 100 Hz,

IOUT = 10 mA

59

f = 100 Hz,

IOUT = 500 mA

58

Power supply ripple rejection

TPS79530

dB

f = 10 kHz,

IOUT = 500 mA

50

f = 100 kHz,

IOUT = 500 mA

39

CNR = 0.001 µF

46

CNR = 0.0047 µF

41

BW = 100 Hz to 100 kHz,

Output noise voltage (TPS79530)

µVRMS

IOUT = 500 mA

CNR = 0.01 µF

35

CNR = 0.1 µF

33

CNR = 0.001 µF

50

Time, start-up (TPS79530)

RL = 6 Ω, COUT = 1 µF

CNR = 0.0047 µF

75

µs

CNR = 0.01 µF

110

High-level enable input voltage

2.7 V < VIN < 5.5 V

1.7

VIN

V

Low-level enable input voltage

2.7 V < VIN < 5.5 V

0.7

V

EN pin current

VEN = 0 V

1

µA

UVLO threshold

VCC rising

2.25

2.65

V

UVLO hysteresis

100

mV

(1)

Minimum VIN is 2.7 V or VOUT + VDO, whichever is greater.

(2)

Dropout is not measured for the TPS79501 and TPS79525 since minimum VIN = 2.7 V.

(3)

For adjustable version, this applies only after VIN is applied; then VEN transitions high to low.

3

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