Toshiba Launches a 80V Electronic Fuse Suitable for 48V Power Line Protection
Toshiba Electronic Devices & Storage Corporation has introduced the TCKE1401NM, an 80V-rated electronic fuse (eFuse IC) designed to enhance power line protection in industrial equipment. This new addition to Toshiba's eFuse IC lineup integrates multiple power line protection functions into a single chip, offering a more functional and compact solution compared to conventional physical fuses.
The TCKE1401NM is particularly relevant given the increasing adoption of 48V power systems in demanding applications such as servers, network equipment, factory automation, and robotics. These systems require robust power line protection circuits with high voltage tolerances and comprehensive safety features. Toshiba's new eFuse IC addresses these needs by providing advanced protection in a compact form factor.
A key differentiator for the TCKE1401NM is its adoption of the VQFN24D package, which, at 4.0×4.0mm (typ.), is an industry-leading small package for 80V-rated eFuse ICs. This compact size significantly contributes to reducing PCB footprint, while its 80V rating and wide operating voltage range (4.7V to 75V) ensure compatibility with 24V, 48V, and 54V systems, improving both safety and efficiency in industrial applications.
Specifications
| Product | Function | Max Input Voltage | Operating Voltage Range | Package | On-Resistance (Typ.) | Key Differentiator |
|---|---|---|---|---|---|---|
| TCKE1401NM | eFuse IC | 80V | 4.7V to 75V | VQFN24D (4.0×4.0mm typ.) | 44.5mΩ | Industry-leading small 80V eFuse IC package |
Key Features
- Integrates multiple power line protection functions: overcurrent, overvoltage, reverse current blocking, input reverse polarity protection, and thermal shutdown.
- Features current limiting and output shutdown functions, with operating thresholds settable via external resistors.
- Provides true reverse current blocking and reverse-connection protection utilising external MOSFETs.
- Includes a FLAG function to notify external circuits of abnormal conditions.
- Incorporates a power-good function to indicate output voltage status.
- Offers an output current monitor function for system oversight.
- Equipped with a thermal shutdown function for immediate protection against unexpected short circuits or abnormal heat generation.
- Supports two selectable recovery methods from abnormal conditions: auto-retry and latch-off.
- Boasts an 80V rating and a wide operating voltage range of 4.7V to 75V.
- Achieves low On-resistance (R_ON) of 44.5mΩ (typ.) to minimise power loss and improve equipment efficiency.
- Utilises an industry-leading small VQFN24D package (4.0×4.0mm typ.) for reduced PCB size.
Applications
- Servers
- Network equipment
- Factory automation equipment
- Robots
- Power line protection in 24V systems
- Power line protection in 48V systems
- Power line protection in 54V systems
Availability
The new TCKE1401NM 80V eFuse IC is available for shipment from Toshiba. Customers can check product availability and purchase options through Toshiba’s online distributor network. The device is offered in a compact 4.0 × 4.0 mm VQFN24D package and is designed for 24V, 48V, and 54V power-line protection applications.
