TPS70751PWP datasheet(4/40 Pages) TI1

Part #	TPS70751PWP

Description	Dual-Output, Low Dropout Voltage Regulators with Power-Up Sequencing for Split-Voltage DSP Systems

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Manufacturer	TI1 [Texas Instruments]

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RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS

(3)

If VO < 1.8V then VImax = 6V, VImin = 2.7V:

Line Reg. (mV)

+ (% V)

V

O

V

Imax

*2.7V

100

1000

If VO > 2.5V then VImax = 6V, VImin = VO + 1V:

Line Reg. (mV)

+ (% V)

V

O

V

Imax* VO)1V

100

1000

TPS70745, TPS70748

TPS70751, TPS70758

TPS70702

SLVS291D – MAY 2000 – REVISED DECEMBER 2007

Over operating temperature range (unless otherwise noted).

MIN

MAX

UNIT

Input voltage, VI

(1)(regulator 1 and 2)

2.7

6

V

Output current, IO (regulator 1)

0

250

mA

Output current, IO (regulator 2)

0

125

mA

Output voltage range (for adjustable option)

1.22

5.5

V

Operating junction temperature, TJ

–40

+125

°C

(1)

To calculate the minimum input voltage for maximum output current, use the following equation: VI(min) = VO(max) + VDO(max load).

Over recommended operating junction temperature range (TJ = –40°C to +125°C), VIN1 or VIN2 = VOUT(nom) + 1V, IO = 1mA,

EN = 0V, and CO = 33µF (unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

2.7V < VI < 6V,

FB connected to VO

1.22

Reference

TJ = +25°C

voltage

2.7V < VI < 6V,

FB connected to VO

1.196

1.244

2.7V < VI < 6V,

TJ = +25°C

1.2

1.2V Output

2.7V < VI < 6V,

1.176

1.224

2.7V < VI < 6V,

TJ = +25°C

1.5

1.5V Output

Output

2.7V < VI < 6V,

1.47

1.53

VO

V

voltage (1),(2)

2.8V < VI < 6V,

TJ = +25°C

1.8

1.8V Output

2.8V < VI < 6V,

1.764

1.836

3.5V < VI < 6V,

TJ = +25°C

2.5

2.5V Output

3.5V < VI < 6V,

2.45

2.55

4.3V < VI < 6V,

TJ = +25°C

3.3

3.3V Output

4.3V < VI < 6V,

3.234

3.366

Quiescent current (GND current) for

(2)

TJ = +25°C

190

µA

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

(2)

230

Output voltage line regulation (

∆VO/VO)

VO + 1V < VI ≤ 6V,

TJ = +25°C

(1)

0.01%

V

for regulator 1 and regulator 2 (3)

VO + 1V < VI ≤ 6V

(1)

0.1%

Load regulation for VOUT 1 and VOUT2

TJ = +25°C

(2)

1

mV

Vn

Output noise

Regulator 1

65

BW = 300Hz to 50kHz,

CO = 33µF, TJ = +25°C

µV

RMS

voltage

Regulator 2

65

Regulator 1

1.6

1.9

Output current limit

VOUT = 0V

µA

Regulator 2

0.750

1

Thermal shutdown junction temperature

+150

°C

EN = VI,

TJ = +25°C

2

Regulator 1

µA

EN = VI

6

II

Standby

(standby) current

EN = VI,

TJ = +25°C

2

Regulator 2

µA

EN = VI

6

PSRR

Power-supply ripple

f = 1kHz, CO = 33µF,

TJ = +25°C

(1)

dB

60

rejection

(1)

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

current = 1mA.

(2)

IO = 1mA to 250mA for Regulator 1 and 1mA to 125mA for Regulator 2.

4

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