TPS72325DBVT datasheet(5/25 Pages) TI1

Part #	TPS72325DBVT

Description	200mA Low-Noise, High-PSRR Negative Output Low-Dropout Linear Regulators

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TPS72301, TPS72325

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SLVS346C – SEPTEMBER 2003 – REVISED SEPTEMBER 2014

6.5 Electrical Characteristics

Over operating junction temperature range, VI = VO(NOM) – 0.5 V, IO = 1 mA, VEN = 1.5 V, CO = 2.2 μF, and CNR = 0.01 μF,

unless otherwise noted. Typical values are at TJ = 25°C.

TPS723xx

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VI

Input voltage range(1)

–10

–2.7

V

VFB

Feedback reference voltage

TPS72301

TJ = 25°C

–1.210

–1.186

–1.162

V

Output voltage range

TPS72301

–10 + VDO

VFB

V

Nominal

TJ = 25°C

–1%

1%

TPS72325 vs

VO

–2%

±1%

2%

Accuracy

VI/IO/T

–10 V

≤ VI ≤ VO – 0.5 V,

10

μA ≤ IO ≤ 200 mA

TPS72301 vs

–3%

±1

3%

VI/IO/T

ΔVO(ΔVI)

Line regulation

–10 V

≤ VI ≤ VO(NOM) – 0.5 V

0.04

%/V

ΔVO(ΔIO)

Load regulation

0 mA

≤ IO ≤ 200 mA

0.002

%/mA

Dropout voltage at

VDO

TPS72325

IO = 200 mA

280

500

mV

VO = 0.96 × VO(NOM)

I(LIM)

Current limit

VO = 0.85 × VO(NOM)

300

550

800

mA

IO = 0 mA (IQ),

130

200

–10 V

≤ VI ≤ VO – 0.5 V

I(GND)

Ground pin current

μA

IO = 200 mA,

350

500

–10 V

≤ VI ≤ VO – 0.5 V

–0.4 V

≤ VEN ≤ 0.4 V,

I(SHDN)

Shutdown ground pin current

0.1

2.0

μA

–10 V

≤ VI ≤ VO – 0.5 V

I(FB)

Feedback pin current

–10 V

≤ VI ≤ VO – 0.5 V

0.05

1.0

μA

IO = 200 mA, 1 kHz,

65

CI = CO = 10 μF

PSRR

Power-supply rejection ratio

TPS72325

dB

IO = 200 mA, 10 kHz,

48

CI = CO = 10 μF

CO = 10 μF, 10 Hz to 100 kHz,

Vn

Output noise voltage

TPS72325

60

μVRMS

IO = 200 mA

VO = –2.5 V, CO = 1 μF,

tSTR

Startup time

1

ms

RL = 25 Ω

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

–10 V

≤ VI ≤ VO – 0.5 V,

I(EN)

Enable pin current

0.1

2.0

μA

–10 V

≤ VEN ≤ ±3.5 V

Shutdown, temperature increasing

165

Tsd

Thermal shutdown temperature

°C

Reset, temperature decreasing

145

TJ

Operating junction temperature

–40

125

°C

(1)

Maximum VI = (VO – VDO) or – 2.7 V, whichever is more negative.

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