TPS70751MPWPREP datasheet(8/41 Pages) TI1

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Line regulation (mV)

+ (% V)

O(VI(max) * 2.7 V)

100

1000

Line regulation (mV)

+ (% V)

O[VI(max) * (VO ) 1)]

100

1000

Electrical Characteristics

TPS70751-EP

DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATOR

WITH POWER-UP SEQUENCING FOR SPLIT-VOLTAGE DSP SYSTEMS

SLVS718 – DECEMBER 2006

over recommended operating junction temperature (T

J = –55°C to 125°C), VIN1 or VIN2 = VO(nom) + 1 V, IO = 1 mA, EN = 0,

O = 33 µF (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Reference

2.7 V < VI < 6 V, FB connected to VO,

1.22

voltage

TJ = 25°C

2.8 V < VI < 6 V, TJ = 25°C

1.8

1.8-V output

Output voltage(1)(2)

2.8 V < VI < 6 V

1.764

1.836

4.3 V < VI < 6 V, TJ = 25°C

3.3

3.3-V output

4.3 V < VI < 6 V

3.234

3.366

TJ = 25°C

190

Quiescent current (GND current) for regulator 1 and

µA

regulator 2, EN = 0 V(1)(2)

230

VO + 1 V < VI ≤ 6 V, TJ = 25°C

0.01%

Output voltage line regulation (

∆V

O/VO) for regulator

1 and regulator 2(3)(2)

VO + 1 V < VI ≤ 6 V

0.1%

Load regulation for VOUT1 and VOUT2(1)

TJ = 25°C

Regulator 1

BW = 300 Hz to 50 kHz,

Output noise voltage

µVrms

CO = 33 µF, TJ = 25°C

Regulator 2

Regulator 1

1.6

2.1

Output current limit

VO = 0 V

Regulator 2

0.750

1.1

Thermal shutdown junction temperature

150

°C

EN = VI, TJ = 25°C

Regulator 1 and

II(standby)

Standby current

µA

Regulator 2

EN = VI

PSRR

Power-supply ripple rejection

f = 1 kHz, CO = 33 µF, TJ = 25°C

(1)

IO = 1 mA to 250 mA for regulator 1 and 1 mA to 125 mA for regulator 2

(2)

Minimum input operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. Maximum input voltage = 6 V, minimum output current

1 mA.

(3)

If VO < 1.8 V, then VI(max) = 6 V, VI(min) = 2.7 V:

If VO > 2.5 V, then VI(max) = 6 V, VI(min) = Vo + 1 V:

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