Adjustable Overvoltage Protection Switch
Description
The KTS1663 overvoltage protection device features an ultra-low 26mΩ (typical) on-resistance high current integrated MOSFET which actively protects low-voltage systems from voltage supply faults up to +40V.
An input voltage exceeding the overvoltage threshold will cause the internal MOSFET to turn off, preventing excessive voltage from damaging downstream devices.
The KTS1663 offers three different fixed OVP options, plus a fully adjustable option. When the OVLO input is connected to GND, the KTS1663 automatically chooses the internal fixed OVLO threshold, preset to 5.95V (typical). Allowing OVLO to float, gives a preset of 10.2V (typical) and connecting a resistor to GND between 30kΩ and 80kΩ gives a preset of 13.5V (typical) The overvoltage protection threshold can also be fully adjusted with an optional external resistor divider to a voltage between 4V and 28V.
The KTS1663 features an open-drain output POK indicating a stable supply between the minimum supply voltage and OVLO threshold. In addition, a VDET output is provided to indicate the presence of a voltage at VBUS and is independent of the OVP switch. In case the device temperature exceeds the maximum junction temperature, the device switches off.
The KTS1663 is available in a RoHS and Green compliant 12-Bump 1.28 x 1.94 x 0.62mm WLCSP.
Features
- Wide Input voltage range: 2.5V to 40V
- Up to 4.5A current capability
- Integrated 26mΩ (typ) N-Channel MOSFET
- Fast OVP turn-off response time: 100ns
- Selectable trip-point options
- Fixed 5.95V
- Fixed 10.2V
- Fixed 13.5V
- Adj. 4V to 28V
- Auto-enabled switch with 18ms debounce time
- Under voltage (UVLO), Short-circuit and thermal shutdown protection
- Open-drain power good output
- VDET output to indicate the presence of VBUS
- ESD Protection
- Human Body Model: ±2.0kV
- Pb-free WLCSP-12 package
- -40°C to +85°C Temperature Range
Applications
- Smartphones
- Mobile Internet Devices
- Tablet Computers
- Peripherals
Packaging Information
| Package | Dimensions | Bumps | Package Code |
| WLCSP34-12 | 1.940mm x 1.280mm x 0.620mm | 12 | UW |
Parameters
| Vin (Min) | Vin (Max) | Switching Frequency (MHz) | Output Auto-Discharge | Max Current (A) | Package |
| 2.5V | 40V | – | 4.5 | WLCSP12 1.28mm x 1.94mm x 0.62mm |
Technical Documentation
| Description | Documents | Type |
|---|---|---|
| Datasheet | KTS1663-04e | |
| Package Outline Drawing | WLCSP34-12 UW POD |
Purchase
| Purchase Options |
|---|
| Buy from Digi-Key |
| Buy from Mouser |
