MP9928—4V TO 60V SYNCHRONOUS STEP-DOWN CONTROLLER

MP9928 Rev. 1.0

www.MonolithicPower.com

4

5/20/2016

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ELECTRICAL CHARACTERISTICS

Parameters

Symbol

Condition

Min

Typ

Max

Units

Input Supply

4.5

5

V

3.7

3.95

V

800

mV

VCC2 = 12V, external bias

25

40

μA

bias

SENSE+ = SENSE- = 0.3V

750

1000

μA

SENSE+ = SENSE- = 0.3V

250

350

μA

0.5

3

μA

VCC1 regulator output voltage

VIN > 6V

5

V

VCC1 regulator load regulation

Load = 0 to 50mA,

VCC2 floating or connects to GND

1

3

%

VCC1 regulator output voltage

from VCC2

VCC2 > 6V

5

V

VCC1 regulator load regulation

from VCC2

Load = 0 to 50mA, VCC2 = 12V

1

3

%

VCC2 UVLO threshold (rising)

4.7

4.92

V

VCC2 UVLO threshold (falling)

4.45

V

VCC2 threshold hysteresis

250

mV

VCC2 supply current

VCC2 = 12V

800

1200

μA

200

300

μA

Feedback (FB)

Feedback voltage

4V

≤ V

0.792 0.800

0.808

V

4V

≤ V

0.788 0.800

0.812

V

Feedback current

10

nA

Enable (EN)

Enable threshold (rising)

1.16

1.22

1.28

V

Enable threshold (falling)

1.03

1.09

1.15

V

Enable threshold hysteresis

130

mV

EN input current

2

μA

Enable turn-off delay

10

15

μs