MP8712 – 18V, 12A, SYNCHRONOUS STEP-DOWN CONVERTER

MP8712 Rev.1.01

www.MonolithicPower.com

4

3/28/2017

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ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Condition

Min

Typ

Max

Units

Supply current (shutdown)

2.1

4

μA

Supply current (quiescent)

No switching,

420

600

μA

HS switch on resistance

15

mΩ

LS switch on resistance

4.5

mΩ

Switch leakage

1

μA

Low-side valley current limit

14

A

Low-side negative current limit

OVP state

-3

A

Low-side ZCD threshold

200

mA

Switching frequency

VIN = 12V, VOUT = 1V

400

500

600

kHz

VIN = 12V, VOUT = 5V

400

500

600

kHz

Minimum off time

(6)

185

ns

Minimum on time

(6)

VOUT = 0.6V

50

ns

Reference voltage

594

600

606

mV

(5)

591

600

609

FB current

VOUT = 620mV

10

50

nA

EN rising threshold

1.1

1.2

1.3

V

EN threshold hysteresis

110

mV

EN to GND pull-down resistor

1.5

MΩ

VIN under-voltage lockout

threshold rising

2.7

2.8

2.92

V

VIN under-voltage lockout

threshold hysteresis

300

mV

Power good UV threshold rising

PGVth-Hi

Good

0.86

0.9

0.94

power good UV threshold falling

PGVth-Lo

Fault

0.81

0.85

0.89

Power good OV threshold rising

PGVth-Hi

Fault

1.11

1.15

1.19

Power good OV threshold falling

PGVth-Lo

Good

1.01

1.05

1.09

Power good deglitch time

PGTd

30

μs

Power good sink current

capability

Sink 4mA

0.4

V

OVP rising threshold

FB

121%

125%

129%

OVP falling threshold

FB

106%

110%

114%

OVP delay

3.7

μs

Output pin absolute OV

6.0

6.5

7.0

V

UVP threshold

Hiccup entry

55%

60%

65%

UVP delay

(6)

10

μs

Soft-start current

5

7

9

μA