MP2420―75V, 0.3A, SYNCHRONOUS STEP-DOWN CONVERTER WITH WATCHDOG

MP2420 Rev. 1.0

www.MonolithicPower.com

4

9/6/2015

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ELECTRICAL CHARACTERISTICS

Parameter

Condition

Min

Typ

Max

Units

DC/DC Converter

Supply quiescent current

20

25

μA

Shutdown supply current

2.2

3.5

μA

3.9

4.2

4.4

V

3.45

3.75

3.95

0.45

V

0.99

1.0

1.01

V

Feedback voltage

0.98

1.0

1.02

V

Feedback current

-50

2

50

nA

0.965

1

1.035

V

Upper switch-on resistance

0.9

1.2

1.5

Ω

Lower switch-on resistance

0.275

0.45

0.625

Ω

Lower switch leakage

1

μA

Peak current limit

670

730

790

mA

Minimum switch-on time

(5)

120

ns

Enable rising threshold

1.25

1.55

1.85

V

Enable falling threshold

1.152

1.2

1.248

V

Enable threshold hysteresis

0.35

V

Enable current

0.8

μA

Soft-start current

4

5.5

7

μA

POK upper trip threshold

FB respect to the nominal value

86

90

94

%

POK lower trip threshold

FB respect to the nominal value

81

85

89

%

POK threshold hysteresis

FB respect to the nominal value

5

%

POK deglitch timer

40

μs

POK output voltage low

0.4

V

FB OVP rising threshold

1.05

1.1

V

FB OVP hysteresis

50

mV

Thermal shutdown

(5)

175

°C

Thermal shutdown

hysteresis

(5)

20

°C

NOTE:

5) Derived from bench characterization. Not tested in production.