MP20045 – LOWER NOISE, 1A LINEAR REGULATOR

MP20045 Rev. 1.0

www.MonolithicPower.com

4

10/13/2010

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2010 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameter

Condition

Min

Typ

Max

Units

Input Voltage

2.5

5.5

V

Input Under voltage Lockout

2.0

2.3

V

Hysteresis of UVLO

160

mV

FB Accuracy

Adjustable

-2.5

2.5

1.5V

-2.5

2.5

1.8V

-2.5

2.5

2.5V

-2.5

2.5

Output

Voltage

Accuracy

3.3V

-2.5

2.5

%

Maximum Output Current

1

A

Short-Circuit Current Limit

1.6

A

In-Regulation Current Limit

1.4

2.2

3.0

A

Ground Current

110

µA

Dropout Voltage

(5)

140

280

mV

Line Regulation

(6)

-0.15

0.15

%/V

Load Regulation

(7)

-0.3

%

Output Voltage Noise

100kHz

13

PSRR

56

dB

Shutdown Supply Current

5

16

µA

EN Logic High

1.5

EN PIN Threshold

EN Logic Low

0.4

V

EN pin PULL-UP resistor

550k

1.1M

Ω

Thermal Shutdown Temperature

Typical thermal hysteresis =20°C

150

°C

Minimum input voltage

1.1

1.3

V

Trip threshold voltage

MP20045

MP20045-15

MP20045-18

MP20045-25

80

86

MP20045-33

77

83

Hysteresis voltage

6

Output low voltage

0.15

0.4

V

PG

Leakage current

1

µA

Notes:

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

6) Line Regulation=

()

IN(MAX )

IN(MIN)

OUT V

OUT V

IN(MIN)

OUT(NOM)

IN MAX

VV

100(% / V)

VV

V

⎡⎤

⎡

⎤

⎣⎦

⎣

⎦

−

×

⎡⎤

−×

⎣⎦

7) Load Regulation=

()

OUT (MAX )

OUT(MIN)

OUTI

OUTI

OUT NOM

VV

100(%)

V

⎡⎤

⎡

⎤

⎣⎦

⎣

⎦

−

×