MP5991

– 16V, 50A, 1mΩ RDS(ON), HOT-SWAP INTELLI-FUSE SOLUTION

MP5991 Rev. 1.0

MonolithicPower.com

10

4/27/2022

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

© 2022 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS (continued)

VIN = 12V, RCS = 2kΩ, RIMON = 2kΩ, TA = 25°C, unless otherwise noted.

Parameters

Symbol

Condition

Min

Typ

Max

Units

Over-Current (OC) Limit Reference (OCREF)

Internal OCREF current

IOCREF

Standalone mode

9

10

11

μA

Slave mode

0

μA

OCREF clamp voltage

VOCREF_

CLAMP

VSS_CLAMP at VOUT < 80% of VIN,

TJ = 25°C

570

635

699

mV

VSS_CLAMP at VOUT < 80% of VIN,

TJ = 125°C

340

440

570

mV

VOUT

≥ 80% of VIN

1.9

2

2.1

V

OCREF operating voltage (6)

VOCREF

0.3

1.8

V

OCREF OC regulation timer

tOC_REG

VOUT

≥ 90% of VIN, VOCREF ≥ 0.3V

220

μs

Short-Circuit Current Limit Reference (SCREF)

Internal SCREF current

ISCREF

Standalone mode, TA = 25°C

9

10

11

μA

Standalone mode, TA = -40 to +125°C

9

10

11

μA

Slave mode

0

μA

Short-circuit current limit

SCREF voltage range

VSCREF

ILIMIT_SC = 40A

0

0.16

V

ILIMIT_SC = 60A

0.24

0.3

0.36

V

ILIMIT_SC = 80A

0.48

0.6

0.72

V

ILIMIT_SC = 120A

0.96

1.2

1.44

V

ILIMIT_SC = 100A

1.68

V

Short-circuit current limit (6)

ILIMIT SC

VSCREF > 1.6V

100

A

Short-circuit protection (SCP)

response time (6)

tSCP

200

ns

Short-circuit start-up protection

timer

tSC_TIMER

VOUT < 1/8 x VIN,

IFET is regulated by VSS_CLAMP

2.1

3.2

ms

Temperature Sense (VTEMP)

Temperature sense gain (6)

8.7

mV/

°C

Temperature sense output (6)

TJ = 25°C

370

mV

Soft Start (SS)

SS current

ISS

VIN = 12V, ISS is dependent on VIN,

RSS = 0.8M

Ω

13

15

17

μA

SS low voltage

VSS_LOW

SS is pull low internally via RSS,

ISINK = 10mA

0.2

V

SS leakage current

ILKG_SS

VON = 0V, VSS = 3.3V, MOSFET is off

1

μA

GOK Output and Comparator

Output low voltage

VGOK_LOW ISINK = 10mA

0.3

V

GOK leakage current

ILKG_GOK

VGOK = 3.3V

1

μA

GOK internal pull-up resistor

RGOK

370

kΩ

GOK comparator falling

threshold

VGOK_

FALLING

Fault status

1.05

1.16

1.3

V

GOK comparator hysteresis

VGOK_HYS

900

mV

GOK fault delay time

1

3

5

μs