TPS7A3301KC datasheet(3/26 Pages) TI1

Part #	TPS7A3301KC

Description	??6-V, ??-A, Ultralow-Noise Negative Voltage Regulator

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TPS7A33

www.ti.com

SBVS169B – DECEMBER 2011 – REVISED MARCH 2012

ELECTRICAL CHARACTERISTICS

(1)

At –40°C

≤ TJ ≤ +125°C, |VIN| = |VOUT(NOM)| + 1.0 V or |VIN| = 3.0 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 10 μF, COUT = 10

μF, CNR/SS = 0 nF, and FB tied to OUT, unless otherwise noted.

TPS7A33

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIN

Input voltage range

–35.0

–3.0

V

VREF

Internal reference

TJ = +25°C, VFB = VREF

–1.192

–1.175

–1.157

V

VUVLO

Under-voltage lockout threshold

-2.0

V

Output voltage range(2)

|VIN| ≥ |VOUT(NOM)| + 1.0 V

–33.2

VREF

V

Nominal accuracy

TJ = +25°C, |VIN| = |VOUT(NOM)| + 0.5 V

–1.5

1.5

%VOUT

5.0 V

≤ |VIN| ≤ 35 V

VOUT

±1.0

%VOUT

1 mA

≤ IOUT ≤ 1 A

Overall accuracy

|VOUT(NOM)| + 1.0 V ≤ |VIN| ≤ 35 V

–2.5

2.5

%VOUT

1 mA

≤ IOUT ≤ 1 A

ΔVO(ΔVI)

Line regulation

|VOUT(NOM)| + 1.0 V ≤ |VIN| ≤ 35 V

0.14

%VOUT

ΔVO(ΔIL)

Load regulation

1 mA

≤ IOUT ≤ 1 A

0.4

%VOUT

VIN = 95% VOUT(NOM), IOUT = 500 mA

290

mV

|VDO|

Dropout voltage

VIN = 95% VOUT(NOM), IOUT = 1 A

325

800

mV

ILIM

Current limit

VOUT = 90% VOUT(NOM)

1900

mA

IOUT = 0 mA

210

350

μA

IGND

Ground current

IOUT = 500 mA

5

mA

VEN = +0.4 V

1.0

3.0

μA

|ISHDN|

Shutdown supply current

VEN = –0.4 V

1.0

3.0

μA

I FB

Feedback current(3)

14

100

nA

VEN = |VIN| = |VOUT(NOM)| + 1.0 V

0.48

1.0

μA

|IEN|

Enable current

VIN = VEN = –35 V

0.51

1.0

μA

VIN = –35 V, VEN = +10 V

0.50

1.0

μA

V+EN_HI

Positive enable high-level voltage

2.0

10

V

V+EN_LO

Positive enable low-level voltage

0

0.4

V

V–EN_HI

Negative enable high-level voltage

VIN

–2.0

V

V–EN_LO

Negative enable low-level voltage

–0.4

0

V

VIN = –3 V, VOUT(NOM) = VREF, COUT = 22 μF,

Vn

Output noise voltage

16

μVRMS

CNR/SS = 10 nF, BW = 10 Hz to 100 kHz

VIN = –6.2 V, VOUT(NOM) = –5 V, COUT = 22 μF,

PSRR

Power-supply rejection ratio

72

dB

CNR/SS = 10 nF, CFF

(4) = 10 nF, f = 10 kHz

Shutdown, temperature increasing

+170

°C

TSD

Thermal shutdown temperature

Reset, temperature decreasing

+150

°C

Operating junction temperature

TJ

–40

+125

°C

range

(1)

At operating conditions, VIN ≤ 0 V, VOUT(NOM) ≤ VREF ≤ 0 V. At regulation, VIN ≤ VOUT(NOM) – |VDO|. IOUT > 0 flows from OUT to IN.

(2)

To ensure stability at no load conditions, a current from the feedback resistive network equal to or greater than 5

μA is required.

(3)

IFB > 0 flows into the device.

(4)

CFF refers to a feed-forward capacitor connected to the FB and OUT pins.

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