TPS78601KTT datasheet(3/17 Pages) TI

Part #	TPS78601KTT

Description	ULTRALOW-NOISE, HIGH PSRR, FAST RF 1.5 A LOW-DROPOUT LINEAR REGULATORS

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Manufacturer	TI [Texas Instruments]

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PACKAGE DISSIPATION RATINGS

ELECTRICAL CHARACTERISTICS

TPS78601, TPS78618

TPS78625, TPS78628

TPS78630, TPS78633

SLVS389D – SEPTEMBER 2002 – REVISED OCTOBER 2004

PACKAGE

BOARD

RΘJC

RΘJA

DDPAK

High-K(1)

2

°C/W

23

°C/W

SOT223

Low-K(2)

15

°C/W

53

°C/W

(1)

The JEDEC high-K (2s2p) board design used to derive this data was a 3-in x 3-in (7,5-cm x 7,5-cm), multilayer board with 1 ounce

internal power and ground planes and 2 ounce copper traces on top and bottom of the board.

(2)

The JEDEC low-K (1s) board design used to derive this data was a 3-in x 3-in (7,5-cm x 7,5cm), two-layered board with 2 ounce copper

traces on top of the board.

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

1.5

A

TPS78601

VFB

5.5 - VDO

V

TPS78618

0 µA < IOUT < 1.5 A

2.8 V < VIN < 5.5 V

1.764

1.8

1.836

V

TPS78625

0 µA < IOUT < 1.5 A

3.5 V < VIN < 5.5 V

2.45

2.5

2.55

V

Output voltage

TPS78628

0 µA < IOUT < 1.5 A

3.8 V < VIN < 5.5 V

2.744

2.8

2.856

V

TPS78630

0 µA < IOUT < 1.5 A

4 V < VIN < 5.5 V

2.94

3

3.06

V

TPS78633

0 µA < IOUT < 1.5 A

4.3 V < VIN < 5.5 V

3.234

3.3

3.366

V

Output voltage line regulation (

∆V

OUT%/VIN)

(1)

VOUT + 1 V < VIN ≤ 5.5 V

5

12

%/V

Load regulation (

∆V

OUT%/VOUT)

0 µA < IOUT < 1.5 A

TJ = 25°C

7

mV

TPS78628

IOUT = 1.5 A

410

580

Dropout voltage(2)

TPS78630

IOUT = 1.5 A

390

550

mV

VIN = VOUT(nom) - 0.1 V

TPS78633

IOUT = 1.5 A

340

510

Output current limit

VOUT = 0 V

2.4

4.2

A

Ground pin current

0 µA < IOUT < 1.5 A

260

385

µA

Shutdown current(3)

VEN = 0 V, 2.7 V < VIN < 5.5 V

0.07

1

µA

FB pin current

FB = 1.8 V

1

µA

f = 100 Hz, IOUT = 10 mA

59

f = 100 Hz, IOUT = 1.5 A

52

Power supply ripple rejection

TPS78630

dB

f = 10 kHz, IOUT = 1.5 A

49

f = 100 kHz, IOUT = 1.5 A

32

CNR = 0.001 µF

66

CNR = 0.0047 µF

51

BW = 100 Hz to 100 kHz,

Output noise voltage (TPS78630)

µVRMS

IOUT = 1.5 A

CNR = 0.01 µF

49

CNR = 0.1 µF

48

CNR = 0.001 µF

50

Time, start-up (TPS78630)

RL = 2 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

0.7

V

EN pin current

VEN = 0

-1

1

µA

UVLO threshold

VCC rising

2.25

2.65

V

UVLO hysteresis

100

mV

(1)

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

(2)

Dropout is not measured for TPS78618 or TPS78625 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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