USB Type-C 28V EPR Port Protector for CC and SBU Pins
Description
The KTU1128 provides four conducting paths with overvoltage protection (OVP) for Type-C’s CC, SBU signals. Once an overvoltage event is detected, it will
shut down all paths to protect circuits in system side, like PD controller from damage.
All the SBU and CC switches have very low on capacitance for broad bandwidth to allow high-speed signal passing through without loss. The CC1/2 switches have low on-resistance for passing VCONN power up to 1.25A.
During dead battery conditions, internal 5.1kΩ resistors automatically pull-down on CC1/2 to ensure that the upstream source provides 5V on VBUS.
The KTU1128 is packaged in RoHS and Green compliant 16-bump WLCSP 1.694mm x 1.694mm
package or 20 pin 3mm x 3mm WQFN package.
Features
- Thunderbolt™ compatible
- Overvoltage Protection
- 32VDC Tolerance on CC1/2, SBU1/2
- CC1/2 OVP = 5.8V
- SBU1/2 OVP = 4.8V
- Fast 70ns Response Time
- IEC61000-4-5 Surge Protection
- ±40V Surge Tolerance on CC1/2
- ±30V Surge Tolerance on SBU1/2
- IEC61000-4-2 ESD Protection
- ±15kV air gap on CC1/2, SBU1/2
- ±8kV contact on CC1/2, SBU1/2
- ±2kV HBM on all pins (JEDEC JS-001-2017)
- CC Switches:
- 1.25A, 270mΩ, 40pF, 140MHz
- Automatic 5.1kΩ dead battery pull-down
- SBU Switches:
- 3Ω, 11pF, 800MHz
- 2.5V to 5.5V Operating Supply Voltage Range
- -40°C to 85°C Operating Temperature Range
- 16-bump WLCSP 1.7mmx1.7mm (0.4mm pitch)
- 20 pin TQFN 3mmx3mm (0.4mm pitch)
- P2P upgrade of KTU1121A for 28V EPR
- RoHS and Green Compliant
Applications
- Notebook PCs, Netbooks, Tablets, Monitors, TVs
- Gaming Devices, Set-Top Boxes, Networking
Packaging Information
| Package | Dimensions | Bumps | Package Code |
| WQFN33-20 | 3.00mm x 3.00mm x 0.75mm | 20 | UAJ |
| WLCSP44-16 | 1.694mm x 1.694mm x 0.555mm | 16 | GAD |
Parameters
| Vin | Protects | Protection | Switches | Package | Package Size (L x W) | ||||
| CC1/2 | SBU1/2 | OVP | Surge | ESD | rDS | Cap | |||
| 2.5-5.5 | OVP = 5.8V | OVP = 4.8V | +32V in < 70ns | CC1/2= ±60V SBU1/2= ±40V |
Air: ±30V Contact: ±30V |
CC = 0.27Ω SBU = 3 Ω |
CC = 33pF SBU = 11pF |
WLCSP44-16 WQFN33-20 |
1.694mm x 1.694mm 3.0 x 3.0mm |
Technical Documentation
| Description | Documents | Type |
|---|---|---|
| Datasheet | KTU1128-04a | |
| Package Outline Drawing | WQFN33-20 UAJ POD |
Evaluation Tools
| Documents | Type |
|
|---|---|---|
| User Manual | ||
| Quick Start Guide | ||
| Bill of Materials | XLSX | |
| Schematic | ||
| 3D Board |
Purchase
| Purchase Options |
|---|
| Buy from Digi-Key |
| Buy from Mouser |
