TPS74701DRCR datasheet(10/24 Pages) TI1

Part #	TPS74701DRCR

Description	500mA Low-Dropout Linear Regulator with Programmable Soft-Start

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Manufacturer	TI1 [Texas Instruments]

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50mV/div

1V/div

Time(50 s/div)

m

C

=2.2 F(Ceramic)

OUT

m

5.0V

1V/ s

m

3.3V

C

=1nF

SS

50mV/div

1V/div

Time(50 s/div)

m

C

=2.2 F(Ceramic)

OUT

m

3.8V

1V/ s

m

1.8V

C

=1nF

SS

100mV/div

500mA/div

100mV/div

Time(50 s/div)

m

C

=2.2 F(Ceramic)

OUT

m

C

=10 F(Ceramic)

OUT

m

1A/ s

m

50mA

C

=470 F(OSCON)

m

OUT

C

=1nF

SS

0.5V/div

V

OUT

V

EN

1V/div

Time(2ms/div)

C

SS

=5600pF

C

SS

=560pF

C

SS

=0nF

3.8V

1.8V

Time(20ms/div)

V

PG

V

OUT

V

=V

IN

BIAS

EN

TPS74701

SBVS099F – NOVEMBER 2007 – REVISED NOVEMBER 2010

www.ti.com

TYPICAL CHARACTERISTICS

At TJ = +25°C, VIN = VOUT(TYP) + 0.3V, VBIAS = 5V, IOUT = 1A, VEN = VIN = 1.8V, VOUT = 1.5V, CIN = 1mF, CBIAS = 4.7mF, and

COUT = 10mF, unless otherwise noted.

VBIAS LINE TRANSIENT

VIN LINE TRANSIENT

Figure 19.

Figure 20.

OUTPUT LOAD TRANSIENT RESPONSE

TURN-ON RESPONSE

Figure 21.

Figure 22.

POWER-UP/POWER-DOWN

Figure 23.

10

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