TPS79015, TPS79018, TPS79025, TPS79028, TPS79030

ULTRALOW-POWER LOW-NOISE 50-mA

LOW-DROPOUT LINEAR REGULATORS

SLVS299B – SEPTEMBER 2000 – REVISED MAY 2001

5

POST OFFICE BOX 655303

electrical characteristics over recommended operating free–air temperature range,

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

High level enable input voltage

2.7 V < VI < 10 V

1.7

V

Low level enable input voltage

2.7 V < VI < 10 V

0.9

V

Power supply ripple rejection (TPS79030)

f = 1 kHz,

Co = 10 µF,

TJ = 25°C,

C(byp) = 0.01 µF

85

dB

Input current (EN)

EN = 0 V

–1

0

1

µA

Input current (EN)

EN = VI

–1

1

µA

Dropout voltage (see Note 6)

TPS79028

IO = 50 mA,

TJ = 25°C

60

Dropout voltage (see Note 6)

TPS79028

IO = 50 mA,

TJ = –40°C to 125°C

125

mV

Dropout voltage (see Note 6)

TPS79030

IO = 50 mA,

TJ = 25°C

57

mV

Dropout voltage (see Note 6)

TPS79030

IO = 50 mA,

TJ = –40°C to 125°C

115

6. IN voltage equals VO(typ) –100 mV; The TPS79030 output voltage is set to 2.9 V. The TPS79015, TPS79018, and TPS79025

dropout voltage is limited by input voltage range limitations.

TYPICAL CHARACTERISTICS

Table of Graphs

FIGURE

VO

Output voltage

vs Output current

1, 2, 3

VO

Output voltage

vs Junction temperature

4, 5, 6

Ground current

vs Junction temperature

7

Output spectral noise density

vs Frequency

8 – 10

Root mean squared output noise

vs Bypass capacitance

11

Zo

Output impedance

vs Frequency

12

VDO

Dropout voltage

vs Junction temperature

13

Ripple rejection

vs Frequency

14 – 16

VO

Output voltage, enable voltage

vs Time (start-up)

17 – 19

Line transient response

20, 22

Load transient response

21, 23

Equivalent series resistance (ESR)

vs Output current

24, 25