7ARMS VBUS Current-Sink Protection Load Switch
Description
The KTS1697A is a low-resistance, high-current load switch with soft-start, over-voltage protection, “ideal diode” reverse-current protection with fast recovery, short-circuit protection, over-current protection, over-temperature protection, and integrated TVS. It is optimized to protect systems with USB Type-C PD ports and barrel connectors that sink up to 140W at 20V and must withstand up to 29V on VBUS.
Automatic reverse-current protection acts as an “ideal diode” with fast recovery and isolates VBUS when charging or powering the system via another port, regardless of the enable status. Soft-start limits inrush current when turning on with large capacitors at the output. The integrated TVS provides IEC industry standard ESD and ±90V surge ratings.
The KTS1697A is packaged in advanced, fully “green” compliant, 2.70 x 2.70mm, 25-bump Wafer-Level ChipScale Package (WLCSP).
Features
- 3V to 23V Operating Voltage Range
- 29V Abs. Max. Rating at IN and OUT
- 7A Continuous Current Rating
- 15A Pulse Current Rating (duration Pd limited)
- 11mΩ typ. On-Resistance from IN to OUT
- Soft-Start (SS) Limits Inrush Current
- Over-Voltage Protection (OVP) at IN
- 23V Internally Fixed
- 4V to 23V External Resistor Programmable
- “Ideal Diode” Reverse-Current Protection (RCP)
- RCP Fast Recovery without Fault Indication
- Short-Circuit Protection (SCP) at OUT
- Over-Current Protection (OCP)
- Over-Temperature Protection (OTP)
- Transient Voltage Suppression (TVS) at IN
- ±90V Surge Protection (IEC61000-4-5)
- ±8kV ESD Contact Discharge (IEC61000-4-2)
- ±15kV ESD Air Gap Discharge (IEC61000-4-2)
- EN Active-Low Enable Logic Input
- Auto-Retry after All Faults
- ACOK Open-Drain Output Flag
- -40°C to 85°C Operating Temperature Range
- 25-bump WLCSP 2.70 x 2.70mm (0.5mm pitch)
Applications
- Notebooks, Netbooks, Ultra-Books, Tablets
- Mini Desktop PCs, Docking Stations, Monitors
Packaging Information
| Package | Dimensions | Package Code |
| WLCSP55-25 | 2.70mm x 2.70mm x 0.62mm | OAB |
Parameters
| Vin (min) | Vin (max) | ON Resistance (mΩ) | Max Current (A) | OVP Trip Point (V) | OVP Turn Off Response Time (ns) | IEC 61000-4-2 ESD (Air Discharge) | IEC 61000-4-2 ESD (Contact Discharge) |
| 3V | 29V | 11 | 7 | Fixed: 23V Adj: 4 – 23 | ±90 | ±15kV | ±8kV |
Technical Documentation
| Description | Documents | Type |
|---|---|---|
| Datasheet | KTS1697A-04b | |
| Package Outline Drawing | WLCSP55-25 OAB POD |
Purchase
| Purchase Options |
|---|
| Buy from Digi-Key |
| Buy from Mouser |