MP20051 – LOW NOISE HIGH PSRR 1A LINEAR REGULATOR

MP20051 Rev.1.11

www.MonolithicPower.com

3

12/26/2013

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© 2013 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameter

Condition

Min

Typ

Max

Units

Input Voltage

2.5

5.5

V

Input Under Voltage Lockout

1.95

2.25

V

Hysteresis of UVLO

160

mV

FB Voltage

0.784

0.8

0.816

V

-2

2

Output Voltage Accuracy

-3

3

%

Maximum Output Current

1

A

Short-Circuit Current Limit

1.6

A

In-Regulation Current Limit

1.4

2.2

3.0

A

110

Ground Current

600

μA

140

280

105

210

Dropout Voltage

(6)

70

140

mV

Line Regulation

(7)

-0.15

0.15

%/V

Load Regulation

(8)

0.3

%

13

35

Output Voltage Noise

from 10Hz to 100kHz

55

f=100Hz

65

f=1kHz

63

f=10kHz

63

PSRR

f=1MHz

33

dB

Shutdown Supply Current

0.2

μA

EN Pin Current , Enabled

0.2

μA

Feedback Pin Current

0.02

μA

Startup Time

45

μs

EN Logic High

1.5

EN PIN Threshold

EN Logic Low

0.4

V

Thermal Shutdown Temperature

Typical thermal hysteresis =20°C

150

°C

Notes:

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

7) Line Regulation=

()

IN(MAX )

IN(MIN)

OUT V

OUT V

IN(MIN)

OUT(NOM)

IN MAX

VV

(% / V)

VV

V

⎡⎤

⎡

⎤

⎣⎦

⎣

⎦

−

×

⎡⎤

−×

⎣⎦

8) Load Regulation=

()

OUT (MAX )

OUT (MIN)

OUT I

OUT I

OUT NOM

VV

(%)

V

⎡⎤

⎡

⎤

⎣⎦

⎣

⎦

−

×