TPS77901, TPS77918, TPS77925, TPS77930

250-mA LDO REGULATOR WITH INTEGRATED RESET IN A MSOP8 PACKAGE

SLVS283D – MARCH 2000 – REVISED OCTOBER 2000

6

POST OFFICE BOX 655303

recommended operating conditions

MIN

MAX

UNIT

2.7

10

V

Output voltage range, VO

1.5

5.5

V

Output current, IO (see Note 1)

0

250

mA

Operating virtual junction temperature, TJ (see Note 1)

– 40

125

°C

† To calculate the minimum input voltage for your maximum output current, use the following equation: VI(min) = VO(max) + VDO(max load).

NOTE 1: Continuous current and operating junction temperature are limited by internal protection circuitry, but it is not recommended that the

device operate under conditions beyond those specified in this table for extended periods of time.

125

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Adjustable voltage

1.5 V

≤ VO ≤ 5.5 V,

TJ = 25°C

VO

Adjustable voltage

1.5 V

≤ VO ≤ 5.5 V

0.98VO

1.02VO

1 8 V Output

TJ = 25°C,

2.8 V < VI < 10 V

1.8

VO

Output voltage

1.8 V Output

2.8 V < VI < 10 V

1.764

1.836

V

VO

g

(see Notes 2 and 4)

2 5 V Output

TJ = 25°C,

3.5 V < VI < 10 V

2.5

V

2.5 V Output

3.5 V < VI < 10 V

2.45

2.55

3 0 V Output

TJ = 25°C,

4.0 V < VI < 10 V

3.0

3.0 V Output

4.0 V < VI < 10 V

2.94

3.06

Quiescent current (GND current) (see Notes 2 and 4)

TJ = 25°C

92

µA

Quiescent current (GND current) (see Notes 2 and 4)

125

µA

Output voltage line regulation (

∆VO/VO) (see Note 3)

VO + 1 V < VI ≤ 10 V, TJ = 25°C

0.005

%/V

Output voltage line regulation (

∆VO/VO) (see Note 3)

VO + 1 V < VI ≤ 10 V

0.05

%/V

Load regulation

TJ = 25°C

1

mV

Vn

Output noise voltage

TPS77918

BW = 300 Hz to 100 kHz, TJ = 25°C,

55

µVrms

Io

Output current limit

VO = 0 V

0.9

1.3

A

Peak output current

2 ms pulse width,

50% duty cycle

400

mA

Thermal shutdown junction temperature

144

°C

Standby current

EN = VI,

TJ = 25°C

1

µA

Standby current

EN = VI

3

µA

FB input current

Adjustable voltage

FB = 1.5 V

1

µA

VIH

High level enable input voltage

2

V

VIL

Low level enable input voltage

0.7

V

Enable input current

–1

1

µA

Power supply ripple rejection (TPS77318, TPS77418)

f = 1 KHz,

TJ = 25°C

55

dB

NOTES:

2. Minimum input operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. Maximum input voltage = 10 V, minimum output

current 1 mA.

3. If VO < 1.8 V then VImax = 10 V, VImin = 2.7 V:

Line Regulation (mV)

+ % V

V

O

V

Imax *

2.7 V

100

1000

If VO > 2.5 V then VImax = 10 V, VImin = Vo + 1 V:

Line Regulation (mV)

+ % V

V

O

V

Imax *

V

O )

1

100

1000

4. IO = 1 mA to 250 mA