MP5048

– 60V, 15A, 7mΩ RDS(ON) HOT-SWAP INTELLI-FUSE SOLUTION

MP5048 Rev. 1.1

www.MonolithicPower.com

5

4/30/2021

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PIN FUNCTIONS

Pin #

Name

Description

1, 2, 18

VIN

System input power supply. The MP5048 operates from a 24V to 60V input rail.

3

–17

VOUT

Output voltage controlled by the IC. VOUT is connected to the source of the integrated

MOSFET.

19

CS

Current-sense output. CS requires an external resistor. The CS voltage (VCS) is compared

to CLREF to determine the current limit.

20

IMON

Current monitor output. The output current is proportional to the current flowing through

the power device. Place a resistor (RIMON) to GND to set the output gain.

21

SS

Soft-start set. An external capacitor connected to SS sets the output voltage soft-start

time. The internal circuit controls the slew rate of the output voltage during start-up.

22

FAULT

Fault indication. Open-drain output. FAULT indicates that a fault condition has occurred.

23

TIMER

Timer set. An external capacitor sets the insertion delay, over-current protection (OCP)

delay time, and the retry time.

24

CLREF

Current-limit reference voltage input. The CLREF pin sets the voltage reference for the

over-current prtotection (OCP) level. Connect a resistor to GND, or drive via an external

source.

25

GND

Ground.

26

ON

Power FET on/off control. Drive the ON pin high to enable the MP5048.

27

3V

Internal 3V LDO output. Place a 2.2µF decoupling capacitor close to 3V and GND.

28

VCC

Internal 4.5V LDO output. VCC can be driven with an external 4.5V to reduce loss from

VIN. Place a 2.2µF decoupling capacitor close to VCC and GND.

29

VTEMP

Junction temperature sense output. Output of the internal temperature sensor

30

MODE

Latch or hiccup operation. When the MODE pin is pulled high, the part latches off if a

fault occurs. It can be configured to latch-off mode by pulling the MODE pin up to 5V

externally, or floating this pin since MODE is internally pulled up. When MODE is pulled

low externally, the part operates in auto-retry mode.

ABSOLUTE MAXIMUM RATINGS (1)

VIN(DC) ... .........................................-0.3V to +65V

VIN(25ns) ......................................................... 72V

VOUT............................................... -0.3V to +65V

All other pins............................... -0.3V to +6.5V

Continuous power dissipation (TA = 25°C) (2)

……………………………………………….5.58W

Junction temperature ............................... 150°C

Lead temperature .................................... 260°C

Storage temperature................ -65°C to +155°C

Recommended Operating Conditions (3)

Input voltage operating range .......... 24V to 60V

Operating junction temp (TJ) .... -40°C to +125°C

Thermal Resistance (4)

θJA

θJC

QFN-30 (5mmx5mm)...………22.4

……9.6..°C/W

Notes:

1) Exceeding these ratings may damage the MP5048.

2) The maximum allowable power dissipation is a function of the

maximum junction temperature, TJ (MAX), the junction-to-

ambient thermal resistance,

θ

JA, and the ambient temperature,

TA. The maximum allowable continuous power dissipation at

any ambient temperature is calculated by PD (MAX) = (TJ

(MAX) - TA) / θJA. Exceeding the maximum allowable power

dissipation produces an excessive die temperature, causing

the regulator to go into thermal shutdown. Internal thermal

shutdown circuitry protects the MP5048 from permanent

damage.

3) The MP5048 is not guaranteed to function outside of its

operating conditions.

4) Measured on JESD51-7, 4-layer PCB.