Over Voltage Protection IC Datasheet

© 2024 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: GD. 06/13/24

LS0504EVT233

5V, 4A eFuse with Over Voltage and Over Current Protection

1

The integrated load switching of the LS0504EVT233 provides

robust, input over-current protection to the downstream circuit

systems. The device comes with built-in over-voltage protection

and internal soft start. The switch’s low RDS(ON) minimizes the

system’s power loss.

In the event of input over-voltage, LS0504EVT233 immediately

turns off the switch to prevent the downstream system from the

stress of excessively high voltage. Internal soft-start ensures a

smooth output voltage ramp-up and limits the input inrush current.

Features & Benefits

Pinout Designation

Description

Applications

IN

1

2

3

GND

6

8

OUT

ILIM

4

5

7

NC

NC

NC

EN

GND

GND

OUT

IN

1

2

3

■ Wide Input Voltage Range

from 2.7V to 6V

■ 30V Maximum Input / Output

Voltage

■ 50mΩ Low RDS(ON)

Protection Switch

■ Built-in Over-Voltage

Protection

■ Discharge Output at OVP

■ Internal Soft-Start

■ Thermal Shutdown

■ Continuous Current 3A; Peak

Current 4A

■ Hiccup Mode Protection for

Over Load or Short Circuit

■ SOT23_3L Package

■ Pb-Free and RoHS compliant

■ Bluetooth Headsets

■ Wearable Device

■ Tablet PC

■ Charging Cable

■ Battery Devices

■ Adapter Powered Devices

IN

GND

NC

OUT

Cin

1 F

Cout

1 F

V

OUT

LS0504EV

IN

GND

ILIM

OUT

1F

Cin

1F

Rlimit

EN

LS0505EV

Cout

V

IN

V

OUT

V

IN

Typical Applications

Soft

Start

UVLO

Charge

Pump

IN

Thermal

Protection

Current

Limit

Driver

OUT

GND

Discharge

Control

R=80

`

Vref

OVP

Functional Block Diagram

Pin no. Pin Name

Description

1

GND

Ground pin

2

IN

Input pin

3

OUT

Output pin. OUT is discharged to GND through

an internal 80Ω resistor during OVP event.

Pin Description

SOT23_3L TOP VIEW

RoHS Pb

Web Resources

Download ECAD models, order samples, and find

technical recources at www.littelfuse.com