company blog about Automotive Smart Switch BTS5045-1EJA PROFET™+ 12V Smart High Voltage Side Power Switch, Single Channel, 45mΩ

Shenzhen Mingjiada Electronics Co., Ltd [Original Product] Automotive Smart Switch_BTS5045-1EJA_PROFET™+ 12V Smart High Voltage Side Power Switch, Single Channel, 45mΩ

1. Product Overview Of BTS5045-1EJA
The BTS5045-1EJA is a single-channel smart high voltage side power switch from Infineon's PROFET™+ 12V series designed for automotive electronics applications with high integration, low on-resistance (45mΩ) and multiple protection features. The BTS5045-1EJA is available in a DSO-8 package and is suitable for driving resistive, inductive and capacitive loads such as lights, motors, relays, etc. The BTS5045-1EJA is designed to be used in a wide range of automotive applications.

2. Key Parameters
The key parameters of BTS5045-1EJAare as follows:

Rated power: 1.6 W

Output current: 4 A (continuous)

On-resistance (RDS(on)): 45 mΩ (@25°C)

Operating Voltage Range: 5V ~ 28V (recommended)

Operating Temperature: -40°C ~ 150°C

Package: DSO-8-43 (surface mount, size 4.9mm x 3.9mm x 1.45mm)

Protection function: overload, short circuit, overheat, reverse battery protection

Diagnostic function: current detection (Sense output)

The BTS5045-1EJA's low power consumption (supply current only 3.5mA) makes it suitable for 12V automotive power systems.

3. Product Features
The core features of the BTS5045-1EJA include:

High reliability:The BTS5045-1EJA meets AEC-Q100 standards for use in harsh automotive environments.

Low conduction loss: 45mΩ RDS(on) reduces heat loss and improves efficiency.

Integrated Protection:

Short circuit protection (current limit 7.3A)

Thermal shutdown (automatic cut-off at Tj >150°C)

Reverse polarity protection (-40V withstand)

Diagnostic feedback: Real-time monitoring of load status via Sense pin.

Fast switching: Turn-on time <120µs, Turn-off time <230µs.

The BTS5045-1EJA has been designed to optimise EMC performance and reduce interference to the on-board network.

4. Typical Applications
The BTS5045-1EJA is widely used in automotive electronic systems such as:

Body Control Module (BCM): driving lights, window motors, door locks.

Power Distribution System (PDS): replacing traditional relays to achieve solid-state switching.

ADAS sensor power supply: provide stable power supply for camera, radar.

Seat/Mirror Adjustment: Controls DC motors.

The BTS5045-1EJA's compact package and low thermal resistance (1600mW maximum power dissipation) make it suitable for high-density PCB layouts.

Block Diagram for the BTS5045-1EJA

Pin Assignment for the BTS5045-1EJA

Summary
The BTS5045-1EJA is the benchmark of Infineon's PROFET™+ 12V family and is the preferred solution for intelligent power management in automobiles, thanks to its low impedance of 45mΩ, 4A output and comprehensive protection features.

Website: www.integrated-ic.com

[FAQ]

Q: Are your products original?

A: Yes, all products are original, new original import is our purpose.

Q:Which Certificates do you have?

A:We are ISO 9001:2015 Certified Company and member of ERAI.

Q:Can you support small quantity order or sample?Is the sample free?

A:Yes,we support sample order and small order.Sample cost is different according to your order or project.

Q:How to ship my order? Is it safe?

A:We use express to ship,such as DHL,Fedex,UPS,TNT,EMS.We can also use your suggested forwarder.Products will be in good packing and ensure the safety and we are responsible to product damage to your order.

Q:What about the lead time?

A:We can ship stock parts within 5 working days.If without stock,we will confirm lead time for you based on your order quantity.