TPS72301DBVR datasheet(3/10 Pages) TI

Part #	TPS72301DBVR

Description	200 mA LOW NOISE HIGH PSRR NEGATIVE OUTPUT LOW DROPOUT LINEAR REGULATORS

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Manufacturer	TI [Texas Instruments]

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TPS72301

TPS72325

SLVS346−SEPTEMBER2003

www.ti.com

3

ELECTRICAL CHARACTERISTICS

over operating junction temperature range, VIN = VOUT(nom) − 0.5 V, IOUT = 1 mA, V(EN) = 1.5 V, COUT = 2.2 µF, C(NR) = 0.01 µF (unless

otherwise noted). Typical values are at 25

°C

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIN

Input voltage range(1)

−10

−2.7

V

V(FB)

Feedback reference voltage

TPS72301

TJ = 25°C

−1.210

−1.186

−1.162

V

Output voltage range

TPS72301

−10 + VDO

V(FB)

V

Nominal

TJ = 25°C

−1%

1%

VOUT

Accuracy

TPS72325 vs

VIN/IOUT/T

−10 V < VIN < VOUT − 0.5 V, 10 µA <

−2%

±1%

2%

Accuracy

TPS72301 vs

VIN/IOUT/T

−10 V < VIN < VOUT − 0.5 V, 10 µA <

IOUT < 200 mA

−3%

±1%

3%

VOUT%/VIN

Line regulation

−10 V < VIN < VOUT(nom) − 0.5 V

0.04

%/V

VOUT%/IOUT

Load regulation

0 mA < IO < 200 mA

0.002

%/mA

VDO

Dropout voltage at

VOUT = 0.96 x VOUT(nom)

TPS72325

IOUT = 200 mA

280

500

mV

I(CL)

Current limit

VOUT = 0.85 x VOUT(nom)

300

550

800

mA

I(GND)

Ground pin current

IOUT = 0 mA, (IQ)

−10 V < VIN < VOUT − 0.5 V

130

200

A

I(GND)

Ground pin current

IOUT = 200 mA,

−10 V < VIN < VOUT − 0.5 V

350

500

µA

I(SHDN)

Shutdown ground pin current

−0.4 V < V(EN) < 0.4 V,

−10 V < VIN < VOUT − 0.5 V

0.1

2.0

µA

I(FB)

Feedback pin current

, −10 V < VIN < VOUT − 0.5 V

0.05

1.0

µA

PSRR

Power supply rejection

TPS72325

IOUT = 200 mA, 1 kHz, CIN = COUT =

10

µF

65

dB

PSRR

Power supply rejection

ratio

TPS72325

IOUT = 200 mA, 10 kHz, CIN = COUT =

10

µF

48

dB

Vn

Output noise voltage

TPS72325

COUT = 10 µF, 10 Hz = 100 kHz,

IOUT = 200 mA

60

µVrms

t(STR)

Startup time

VOUT = −2.5 V, COUT = 1 µF, RL = 25 Ω

1

ms

VEN(hi)

Enable threshold positive

1.5

V

VEN(lo)

Enable threshold negative

−1.5

V

VDIS(hi)

Disable threshold positive

0.4

V

VDIS(lo)

Disable threshold negative

−0.4

V

I(EN)

Enable pin current

−10 V

≤ VIN ≤ V − 0.5 V,

−10 V

≤ V(EN) ≤ ±3.5 V

0.1

2.0

µA

Thermal shutdown temperature

Shutdown, temperature increasing

165

°C

Thermal shutdown temperature

Reset, temperature decreasing

145

°C

TJ

Operating junction temperature

−40

125

°C

(1) Maximum VIN = VOUT + VDO or − 2.7 V, whichever is more negative.

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TPS72301DBVR Datasheet(PDF) 3 Page - Texas Instruments

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