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

MP8712 Rev. 1.2

MonolithicPower.com

4

3/19/2021

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© 2021 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN = 12V, TJ = -40°C to +125°C (5), typical value is tested at TJ = +25°C, unless otherwise noted.

Parameter

Symbol

Condition

Min

Typ

Max

Units

Supply current (shutdown)

IIN

VEN = 0V

2.1

4

μA

Supply current (quiescent)

IQ

No switching,

FB = 105% VREF

420

600

μA

HS switch on resistance

HSRDS-ON

VBST-SW = 3.3V

15

mΩ

LS switch on resistance

LSRDS-ON

VCC = 3.3V

4.5

mΩ

Switch leakage

SWLKG

VEN = 0V, VSW = 12V,

TJ = +25°C

1

μA

Low-side valley current limit

ILIMIT_L

14

A

Low-side negative current limit

ILIMIT_LN

OVP state

-3

A

Low-side ZCD threshold

IZCD

TJ = +25°C

200

mA

Switching frequency

fSW1

VIN = 12V, VOUT = 1V

400

500

600

kHz

fSW2

VIN = 12V, VOUT = 5V

400

500

600

kHz

Minimum off time (6)

τOFF_MIN

185

ns

Minimum on time (6)

tON_MIN

VOUT = 0.6V

50

ns

Reference voltage

Vref

TJ = 25°C

594

600

606

mV

-40°C < TJ < 125°C (5)

591

600

609

FB current

IFB

VOUT = 620mV

10

50

nA

EN rising threshold

VEN_RISING

1.1

1.2

1.3

V

EN threshold hysteresis

VEN_HYS

110

mV

EN to GND pull-down resistor

REN

1.5

MΩ

VIN under-voltage lockout

threshold rising

INUVVth

2.7

2.8

2.92

V

VIN under-voltage lockout

threshold hysteresis

INUVHYS

300

mV

Power good UV threshold rising

PGVth-Hi

Good

0.86

0.9

0.94

VOUT

power good UV threshold falling

PGVth-Lo

Fault

0.81

0.85

0.89

VOUT

Power good OV threshold rising

PGVth-Hi

Fault

1.11

1.15

1.19

VOUT

Power good OV threshold falling

PGVth-Lo

Good

1.01

1.05

1.09

VOUT

Power good deglitch time

PGTd

30

μs

Power good sink current

capability

VPG

Sink 4mA

0.4

V

OVP rising threshold

VOVP_Rise

FB

121%

125%

129%

VREF

OVP falling threshold

VOVP_Falling

FB

106%

110%

114%

VREF

OVP delay

τOVP

3.7

μs

Output pin absolute OV

VOVP2

6.0

6.5

7.0

V

UVP threshold

VFB_UV_th

Hiccup entry

55%

60%

65%

VREF

UVP delay (6)

ΤUVP

10

μs

Soft-start current

ISS

5

7

9

μA