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TPS791

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SLVS325D – MARCH 2001 – REVISED FEBRUARY 2018

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Copyright © 2001–2018, Texas Instruments Incorporated

(1)

The minimum VIN operating voltage is 2.7 V or VOUT(typ) + 1 V, whichever is greater. The maximum VIN voltage is 5.5 V. The maximum

output current is 100 mA.

(2)

If VOUT ≤ 1.8 V then VINmin = 2.7 V and VINmax = 5.5 V.

(3)

Equals VIN voltage – VOUT(typ) – 100 mV; the TPS79118 dropout voltage is limited by the minimum input voltage range limitations.

6.5 Electrical Characteristics

over recommended operating free-air temperature range, (TJ = –40°C to 125°C), VIN = VOUT(typ) + 1 V, IOUT= 1 mA, EN = 0 V,

COUT = 10 µF, CBYPASS= 0.01 µF (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output voltage

TPS79101

TJ = 25°C, 1.22 V ≤ VOUT ≤ 5.2 V

VOUT

V

0 µA < IOUT < 100 mA(1) ,1.22 V ≤ VOUT ≤ 5.2 V

0.98

VOUT

1.02

VOUT

TPS79118

TJ = 25°C

1.8

0 µA < IOUT < 100 mA, 2.8 V < VIN < 5.5 V

1.764

1.836

TPS79133

TJ = 25°C

3.3

0 µA < IOUT < 100 mA, 4.3 V < VIN < 5.5 V

3.234

3.366

TPS79147

TJ = 25°C

4.7

0 µA < IOUT < 100 mA, 5.2 V < VIN < 5.5 V

4.606

4.794

VREF

Reference voltage

1.2246

V

Quiescent current (GND current)

0 µA < IOUT < 100 mA, TJ = 25°C

170

µA

0 µA < IOUT < 100 mA

250

Load regulation

0 µA < IOUT < 100 mA, TJ = 25°C

5

mV

ΔVOUT/

VOUT

Output voltage line regulation(2)

VOUT + 1 V < VIN ≤ 5.5 V, TJ = 25°C

0.05

%/V

VOUT + 1 V < VIN ≤ 5.5 V

0.12

Output noise voltage (TPS79118)

BW = 100 Hz to

100 kHz, IOUT =

100 mA, TJ = 25°C

CBYPASS = 0.001 µF

32

µVRMS

CBYPASS = 0.0047 µF

17

CBYPASS = 0.01 µF

16

CBYPASS = 0.1 µF

15

Time, start-up (TPS79133)

RL = 33 Ω, COUT =

1 µF, TJ = 25°C

CBYPASS = 0.001 µF

53

µs

CBYPASS = 0.0047 µF

67

CBYPASS = 0.01 µF

98

Output current limit

VOUT = 0 V(1)

285

600

mA

UVLO threshold

VIN rising

2.25

2.65

V

UVLO hysteresis

TJ = 25°C, VIN rising

100

mV

Standby current

EN = VIN, 2.7 V < VIN < 5.5 V

0.07

1

µA

High level enable input voltage

2.7 V < VIN < 5.5 V

2

V

Low level enable input voltage

2.7 V < VIN < 5.5 V

0.7

V

Input current (EN)

EN = VIN

–1

1

µA

PSRR

Power-supply ripple

rejection

TPS79118

f = 100 Hz, TJ = 25°C, IOUT = 10 mA

80

dB

f = 100 Hz, TJ = 25°C, IOUT = 100 mA

75

f = 10 kHz, TJ = 25°C, IOUT = 100 mA

72

f = 100 kHz, TJ = 25°C, IOUT = 100 mA

45

TPS79133

f = 100 Hz, TJ = 25°C, IOUT = 10 mA

70

f = 100 Hz, TJ = 25°C, IOUT = 100 mA

75

f = 10 kHz, TJ = 25°C, IOUT = 100 mA

73

f = 100 kHz, TJ = 25°C, IOUT = 100 mA

37

VDO

Dropout voltage(3)

TPS79133

IOUT = 100 mA, TJ = 25°C

50

mV

IOUT = 100 mA

90

TPS79147

IOUT = 100 mA, TJ = 25°C

38

IOUT = 100 mA

70