MP20048 – CAPACITOR-FREE, 250mA, LOW DROPOUT VOLTAGE REGULATOR

MP20048 Rev. 0.91

www.MonolithicPower.com

3

4/6/2010

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2010 MPS. All Rights Reserved.

Parameters

Test Condition

Min

Typ

Max

Unit

Input voltage range

(6)

1.7

5.5

V

Internal reference

1.221

1.234

1.247

V

Accuracy

-1.0

+1.0

%

Output voltage range

(7)

5.5-

V

N

Line regulation

(8)

0.01

%/V

UT

Load regulation

(9)

0.0005

%/mA

Dropout Voltage

(10)

62.5

mV

Output impedance in

dropout

0.25

Ω

Output current limit

270

450

mA

Short-circuit current

430

mA

350

μA

Ground pin current

500

800

μA

Shutdown

current

0.01

1

μA

Output leakage

6.5

μA

f=100Hz

48

PSRR

Power-supply rejection

ratio

(ripple rejection)

f=10kHz

23

dB

48

VN

Output noise voltage

BW=10Hz—100kHz

37

Startup time

0.5

ms

Enable high (enabled)

1.7

V

Enable low (shutdown)

0

0.5

V

Shutdown Temp increasing

+140

℃

Thermal

shutdown

temperature

Reset Temp decreasing

+130

℃

Operating

junction

temperature

125

℃

Notes:

8)

100(%/V)

V

]

V

[V

V

V

Regulation

Line

OUT(NOM)

IN(MIN)

IN(MAX)

]

OUT[V

]

OUT[V

IN(MIN)

IN(MAX)

×

×

−

−

=

9)

100(%)

V

V

V

Regulation

Load

OUT(NOM)

]

OUT[I

]

OUT[I

OUT(MIN)

OUT(MAX)

×

−

=

10) Dropout voltage is defined as the input to output differential when the output voltage drops 100mV below its nominal value.