TPS7A3901DSCT datasheet(6/43 Pages) TI1

Part #	TPS7A3901DSCT

Description	Dual, 150-mA, Wide VIN Positive and Negative LDO Voltage Regulator

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Manufacturer	TI1 [Texas Instruments]

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TPS7A39

SBVS263 – JULY 2017

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(1)

To ensure VOUT does not drift up while the device is disabled, a minimum load current of 5 µA is required.

(2)

VOUT(target) = 0 V, R1N = 10 kΩ, R2N = open.

(3)

The device is not tested under conditions where the power dissipated across the device, PD, exceeds 2 W.

6.5 Electrical Characteristics

at TJ = –40°C to +125°C, VINP(nom) = VOUTP(nom) + 1 V or VIN(nom) = 3.3 V (whichever is greater), VINN(nom) = VOUTN(nom) – 1 V or

VINN(nom) = –3.3 V (whichever is less), VEN = VINP, IOUT = 1 mA, CINx = 2.2 μF, COUTx = 10 μF, CFFx = CNR/SS = open, R1N = R2N =

10 kΩ, and FBP tied to OUTP (unless otherwise noted); typical values are at TJ = 25°C

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VINP

Input voltage range, positive channel

3.3

33

V

VINN

Input voltage range, negative channel

–33

–3.3

V

VUVLOP(rising)

Undervoltage lockout threshold,

positive channel

VINP rising, VINN = –3.3 V

1.76

2.82

V

VUVLOP(hys)

Undervoltage lockout threshold, positive

channel hysteresis

VINP falling, VINN = –3.3 V

150

mV

VUVLON(falling)

Undervoltage lockout threshold,

negative channel

VINN falling, VINP = 3.3 V

–2.89

–1.62

V

VUVLON(hys)

Undervoltage lockout threshold, negative

channel, hysteresis

VINN rising, VINP = 3.3 V

150

mV

VNR/SS

Internal reference voltage

1.176

1.188

1.212

V

VFBP

Positive feedback voltage

1.1

1.185

1.25

V

VFBN

Negative feedback voltage

–10

0

10

mV

VOUT

Output voltage range(1)

Positive channel

VFBP

30

V

Negative channel

–30

VFBN

(2)

Nominal VOUT accuracy, both channels

TJ = 25°C

–1.5

1.5

%VOUT

Overall VOUT accuracy, both channels

(3)

|VINx(nom)| ≤ |VINx| ≤ 33 V, 1 mA ≤ |IOUTx| ≤ 150 mA,

1.2 V

≤ |VOUTX(nom)| ≤ 30 V

–2.5

2.5

%VOUT

Negative VOUT channel accuracy

–33 V

≤ VINN ≤ VINN(nom) , –150 mA ≤ IOUTN ≤

1 mA, –1.2 V < VOUTN(nom) ≤ 0 V

–30

30

mV

ΔVOUT(ΔVIN) /

VOUT(NOM)

Line regulation, both channels

|VINx(nom)| ≤ |VINx| ≤ 33 V

0.11

%VOUT

ΔVOUT(ΔIOUT) /

VOUT(NOM)

Load regulation, both channels

1 mA

≤ |IOUTx| ≤ 150 mA

0.04

%VOUT

VDO

Dropout voltage

Positive channel

IOUTP = 50 mA, 3.3 V ≤ VINP(nom) ≤ 33.0 V,

VFBP = 1.070 V

270

mV

IOUTP = 150 mA, 3.3 V ≤ VINP(nom) ≤ 33.0 V,

VFBP = 1.070 V

238

500

Negative channel

IOUTN = 50 mA, -3.3 V ≤ VINN(nom) ≤ -33.0 V,

VFBN = 0.0695 V

–220

IOUTN = 150 mA, -3.3 V ≤ VINN(nom) ≤ -33.0 V,

VFBN = 0.0695 V

–400

–310

VBUF

Buffered reference output voltage

VNR/SS

V

VBUF/IBUF

Buffered reference load regulation

IBUF = 100 μA to 1 mA

1

mV/mA

VBUF – VNR/SS

Output buffer offset voltage

VNR/SS = 0.25 V to 1.2 V

–6

6

mV

VOUTP–VOUTN

DC output voltage difference with a forced

REF voltage

VNR/SS = 0.25 V to 1.2 V

–10

10

%VNR/SS

ILIM

Current limit

Positive channel

VOUTP = 90% VOUTP(nom)

200

300

500

mA

Negative channel

VOUTN = 90% VOUTN(nom)

–500

–300

–200

ISUPPLY

Supply current

Positive channel

IOUTP = 0 mA, R2N = open

75

150

µA

IOUTP = 150mA, R2N = open

904

Negative channel

IOUTN = 0 mA, VOUTN(nom)= 0 V, R2N = open

–150

–75

IOUTN = 150 mA, R2N = open

–1053

ISHDN

Shutdown supply current

Positive channel

VEN = 0.4 V, 3.3 V ≤ |VINx| ≤ 33 V

3.5

6.5

µA

Negative channel

0.8

3

IFBx

Feedback pin leakage

current

Positive channel

3

100

nA

Negative channel

–100

–3

INR/SS

Soft-start charging current

VNR/SS = 0.9 V

3

4.7

6.7

µA

IEN

Enable pin leakage current

VEN = VINP = 3.3 V

0.02

1

µA

VEN = VINP = 33 V

0.2

1

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