MP4569―75V, 0.3A, SYNCHRONOUS STEP-DOWN CONVERTER

MP4569 Rev. 1.0

www.MonolithicPower.com

4

9/12/2014

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ELECTRICAL CHARACTERISTICS

Parameter

Condition

Min

Typ

Max

Units

Supply Quiescent Current

20

25

μA

Shutdown Supply Current

2.2

3.5

μA

VIN UVLO Rising Threshold

3.9

4.2

4.4

V

VIN UVLO Falling Threshold

3.45

3.75

3.95

V

VIN UVLO Hysteresis

0.45

V

Feedback Voltage

0.98

1

1.02

V

0.99

1

1.01

V

Feedback Current

-50

2

50

nA

VREF Pin Voltage

(5)

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

(6)

120

ns

Enable Rising Threshold

1.4

1.55

1.7

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

(5)

FB respect to the nominal value

86

90

94

%

POK Lower Trip Threshold

(5)

FB respect to the nominal value

81

85

89

%

POK Threshold Hysteresis

(5)

FB respect to the nominal value

5

%

POK Deglitch Timer

(5)

40

μs

POK Output Voltage Low

(5)

0.4

V

FB OVP Rising Threshold

1.05

1.1

V

FB OVP Hysteresis

50

mV

Thermal Shutdown

(6)

175

°C

Thermal Shutdown

Hysteresis

(6)

20

°C

Notes:

5) QFN package only.

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