TPS77001, TPS77012, TPS77015, TPS77018, TPS77025

TPS77027, TPS77028, TPS77030, TPS77033, TPS77050

ULTRA LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS

SLVS210C – JUNE 1999 – REVISED SEPTEMBER 1999

5

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

FB input current

FB = 1.224 V (TPS77001)

–1

1

µA

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

f = 1 kHz,

CO = 10 µF,

TJ = 25°C,

See Note 4

60

dB

Input current (EN)

EN = 0 V

–1

0

1

µA

Input current (EN)

EN = VI

–1

1

µA

TPS77028

IO = 50 mA,

TJ = 25°C

60

TPS77028

IO = 50 mA

TJ = –40°C to 125°C

125

TPS77030

IO = 50 mA,

TJ = 25°C

57

Dropout voltage

TPS77030

IO = 50 mA

TJ = –40°C to 125°C

115

mV

g

(See Note 6)

TPS77033

IO = 50 mA,

TJ = 25°C

48

mV

TPS77033

IO = 50 mA

TJ = –40°C to 125°C

100

TPS77050

IO = 50 mA,

TJ = 25°C

35

TPS77050

IO = 50 mA

TJ = –40°C to 125°C

85

NOTES:

4. Minimum IN operating voltage is 2.7 V or VO (typ) + 1 V, whichever is greater. Maximum IN voltage 10 V, minimum output current

10

µA, maximum output current 50 mA.

6. IN voltage equals VO(Typ) –100mV; TPS77001 output voltage set to 3.3 V nominal with external resistor divider. TPS77012,

TPS77015, TPS77018, TPS77025, and TPS77027 dropout voltage 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 Free-air temperature

4, 5, 6

Ground current

vs Free-air temperature

7

Output spectral noise density

vs Frequency

8

Zo

Output impedance

vs Frequency

9

VDO

Dropout voltage

vs Free-air temperature

10

Ripple rejection

vs Frequency

11

LDO startup time

12

Line transient response

13, 15

Load transient response

14, 16

Equivalent series resistance (ESR)

vs Output current

17, 19

Equivalent series resistance (ESR)

vs Added ceramic capacitance

18, 20