MP8792 – 16V, 12A, SYNCHRONOUS STEP-DOWN CONVERTER

MP8792 Rev. 1.0

www.MonolithicPower.com

6

12/2/2019

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2019 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted.

Parameters

Symbol

Condition

Min

Typ

Max

Units

Supply Current

Supply current (shutdown)

IIN

VEN = 0V

10

20

μA

Supply current (quiescent)

IIN

VEN = 2V, VFB = 0.62V

650

850

μA

MOSFET

Switch leakage

SWLKG_HS

VEN = 0V, VSW = 0V

0

10

μA

SWLKG_LS

VEN = 0V, VSW = 12V

0

30

HS on state resistance

RDS_ON_HS

VEN = 2V at 25°C

13.3

mΩ

LS on state resistance

RDS_ON_LS

VEN = 2V at 25°C

3.8

mΩ

Current Limit

Current limit threshold

VLIM

1.15

1.2

1.25

V

ICS to IOUT ratio

ICS/IOUT

IOUT

≥ 2A

18

20

22

μA/A

Low-side negative current limit

ILIM_NEG

-9

A

Negative current limit time out

(7)

tNCL_Timer

200

ns

Switching Frequency

Switching frequency

fSW

MODE = GND, IOUT = 0A,

VOUT = 1V, TJ = 25°C

480

600

720

kHZ

MODE = 30.1k

Ω, IOUT = 0A,

VOUT = 1V, TJ = 25°C

680

800

920

kHZ

MODE = 60.4k

Ω, IOUT = 0A,

VOUT = 1V, TJ = 25°C

850

1000

1150

kHZ

Minimum on time (7)

tON_MIN

VFB = 500mV

50

ns

Minimum off time (7)

tOFF_MIN

VFB = 500mV

180

ns

Over-Voltage and Under-Voltage Protection

OVP threshold

VOVP

113%

116%

119%

VREF

UVP threshold

VUVP

77%

80%

83%

VREF

Feedback Voltage and Soft Start

Feedback voltage

VREF

TJ = -40°C to +125°C

594

600

606

mV

TJ = 0°C to 70°C

597

600

603

mV

TRK/REF sourcing current

ITRACK_Source

VTRK/REF = 0V

42

μA

TRK/REF sinking current

ITRACK_Sink

VTRK/REF = 1V

12

μA

Soft-start time

tSS

CTRACK = 1nF, TJ = 25°C

0.75

1

1.25

ms

Error Amplifier

Error amplifier offset

VOS

-3

0

+3

mV

Feedback current

IFB

VFB = REF

50

100

nA