TPS7A3401_15 datasheet(5/27 Pages) TI

Part #	TPS7A3401

Description	TPS7A3401 ??0-V, ??00-mA, Low-Noise Negative Voltage Regulator

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Manufacturer	TI [Texas Instruments]

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D

V

( I

)

OUT

V

OUT(NOM)

D

V

( V )

OUT

IN

V

OUT(NOM)

TPS7A3401

www.ti.com

SBVS163A – JUNE 2011 – REVISED MAY 2015

6.4 Thermal Information

TPS7A3401

THERMAL METRIC(1)

DGN (HVSSOP)

UNIT

8 PINS

RθJA

Junction-to-ambient thermal resistance

63.4

°C/W

RθJC(top)

Junction-to-case(top) thermal resistance

53

°C/W

RθJB

Junction-to-board thermal resistance

37.4

°C/W

ψJT

Junction-to-top characterization parameter

3.7

°C/W

ψJB

Junction-to-board characterization parameter

37.1

°C/W

RθJC(bot)

Junction-to-case(bottom) thermal resistance

13.5

°C/W

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

6.5 Electrical Characteristics

At TJ = –40°C to 125°C, |VIN| = |VOUT(nom)| + 1 V or |VIN| = 3 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 2.2 µF, COUT = 2.2 µF,

and the FB pin tied to OUT, unless otherwise noted.(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIN

Input voltage

–20

–3

V

VREF

Internal reference

TJ = 25°C, VFB = VREF

–1.202

–1.184

–1.166

V

Output voltage(2)

|VIN| ≥ |VOUT(nom)| + 1 V

–18

VREF

V

Nominal accuracy

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

–1.5

1.5

%VOUT

VOUT

|VOUT(nom)| + 1 V ≤ |VIN| ≤ 20 V

Overall accuracy

–2.5

2.5

%VOUT

1 mA

≤ IOUT ≤ 200 mA

Line regulation

TJ = 25°C, |VOUT(nom)| + 1 V ≤ |VIN| ≤ 20 V

0.14

%VOUT

Load regulation

TJ = 25°C, 1 mA ≤ IOUT ≤ 200 mA

0.04

%VOUT

VIN = 95% VOUT(nom), IOUT = 100 mA

216

mV

|VDO|

Dropout voltage

VIN = 95% VOUT(nom), IOUT = 200 mA

500

800

mV

ICL

Current limit

VOUT = 90% VOUT(nom)

200

330

500

mA

IOUT = 0 mA

55

100

μA

IGND

Ground current

IOUT = 100 mA

950

μA

VEN = 0.4 V

1

5

μA

|ISHDN|

Shutdown supply current

VEN = –0.4 V

1

5

μA

IFB

Feedback current(3)

14

100

nA

VEN = |VIN| = |VOUT(nom)| + 1 V

0.48

1

μA

|IEN|

Enable current

VIN = VEN = –20 V

0.51

1

μA

VIN = –20 V, VEN = 15 V

0.50

1

μA

TJ = –40°C to 125°C

2

15

V

VEN(+HI)

Positive enable high-level voltage

TJ = –40°C to 85°C

1.8

15

VEN(+LO)

Positive enable low-level voltage

0

0.4

V

VEN(–HI)

Negative enable high-level voltage

VIN

–2

V

VEN(–LO)

Negative enable low-level voltage

–0.4

0

V

VIN = –3 V, VOUT(nom) = VREF, COUT = 10 μF,

Vn

Output noise voltage

80

μVRMS

BW = 10 Hz to 100 kHz

VIN = –6.2 V, VOUT(nom) = –5 V,

PSRR

Power-supply rejection ratio

50

dB

COUT = 10 μF, f = 1 kHz

Shutdown, temperature increasing

170

TSD

Thermal shutdown temperature

°C

Reset, temperature decreasing

150

(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.

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