The KTS1800 is a USB VBUS safety management load switch for up to 312W ISINK or 240W ISOURCE in 48V EPR systems. The operating range is 3V to 55V with input/output withstand up to 59VDC. Ultra-fast over-voltage protection (OVP) is internally set to 55V, but optionally adjusted via external resistors. Low on-resistance minimizes heat and voltage droop. Reverse-current protection (RCP) in both sink/source acts as a 20mV “ideal diode” with fast recovery. Additional safety management includes short-circuit protection (SCP) during and after soft-start, ultra-fast over-current protection (OCP), programmable current-limit protection (CLP), over-temperature protection (OTP), and an integrated transient voltage suppressor (TVS) for IEC industry standard ±30kV ESD and ±130V surge ratings. Safe POK LDO and VBUS active-discharge circuits are also integrated. The KTS1800 is packaged in advanced, fully “green” compliant, 4.81mm x 3.79mm, 63-bump Wafer-Level Chip-Scale Package (WLCSP).
Main Features:
- 3V to 55V Operating Voltage Range
- 59VDC Abs. Max. Rating at VBUS and VSYS
- 6.5ARMS Continuous Current Rating
- 25mW typ. On-Resistance from VBUS to VSYS
- 55V, 90ns Over-Voltage Protection (OVP)
- 4V to 55V External Resistor Programmable
- Transient Voltage Suppression (TVS) at VBUS
- 48VDC ±130V Surge Protection (IEC61000-4-5)
- ±30kV ESD Contact Discharge (IEC61000-4-2)
- ±30kV ESD Air-Gap Discharge (IEC61000-4-2)
- Soft-Start (SS) Limits Inrush Current
- Short-Circuit Protection (SCP) during & after SS
- 21A, 500ns Over-Current Protection (OCP)
