The KTS1640 is a low-resistance, electronically controlled load switch, with enhanced protection features, used to protect loads from abnormal power supply or load problems. Operating from a wide input supply voltage of between 6 V and 40 V, the KTS1640 protects the system from reverse input supplies down to -28V. Integrating two N-Channel MOSFETs, the device includes fixed over-voltage protection of 27 V KTS1640 along with over-temperature protection with auto-retry. Following an over-voltage condition only, KTS1640 will automatically resume operation, when the over-voltage condition is removed. An ENABLE pin allows the MOSFET switch to be enabled or disabled, placing the device in a low current shutdown mode. System monitoring is provided by a fault FLAG. To inform the system that the battery or power supply is connected, BDET mirrors the input voltage less the drop across the reverse battery protection MOSFET and sources up to a maximum of 120 mA Further protection includes over-temperature shutdown, and the input pin is fully ESD protected to comply with the IEC61000-4-2 (Level 4) specification. The KTS1640 is packaged in an advanced, fully green-compliant, TDFN44-12 package.
Key features
- Wide input operating range from 6V to 40V DC Input
- Low resistance MOSFET Switch typ. 41mΩ
- Reverse Battery Protection to -28V
- Fixed over-voltage protection
- Fixed: 27V ± 0.8V or 20.3V ± 0.8V
- Fast OVP response time typ. 360ns
- Continuous output current up to 6A
- Over-temperature Protection with Auto-Retry
- Open drain fault flag
- Shutdown pin with low shutdown current
- Voltage Input detection output
- Input ESD protection to IEC61000-4-2 (Level 4)
- Contact: ±8kV
- Air: ±15kV
- Other pins HBM: ±2kV
- Pb-free TDFN44-12 package
- -40°C to +85°C operating temperature range
Key applications
- Reverse Power Supply Protection
- Telecom/Server/Networking System
- Industrial and Medical Systems
- Portable Instrumentation
