USB Type-C Port Protector for CC and SBU Pins
Description
The KTU1121A 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 oncapacitance 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 KTU1121A is packaged in RoHS and Green compliant 16-bump WLCSP 1.7mm x 1.7mm package or 20 pin 3mm x 3mm TQFN package.
Features
- Thunderbolt™ compatible
- Overvoltage Protection
- 24VDC Tolerance on CC 1/2, SBU 1/2
- CC 1/2 OVP = 5.8V
- SBU 1/2 OVP = 4.8V
- Fast 70ns Response Time
- IEC61000-4-5 Surge Protection
- ±40V Surge Tolerance on CC 1/2
- ±30V Surge Tolerance on SBU 1/2
- IEC61000-4-2 ESD Protection
- ±15kV air gap on CC 1/2, SBU 1/2
- ±8kV contact on CC 1/2, SBU 1/2
- ±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 1.7mm x 1.7mm (0.4mm pitch)
- 20 pin TQFN 3mm x 3mm (0.4mm pitch)
- RoHS and Green Compliant
Applications
- Notebooks, PCs, Netbooks, Tablets, Monitors, TVs
- Gaming Devices, Set-top Boxes, Networking
Packaging Information
| Package | Dimensions | Bumps | Package Code |
| WLCSP44-16 | 1.700mm x 1.700mm x 0.620mm | 16 | GAB |
| TQFN33-20 | 3.00mm x 3.00mm x 0.75mm | 16 | UAJ |
Parameters
| Vin (min) | Vin (max) | IQ (µA) | ON Resistance (mΩ) | Switch Con (pF) | Surge Rating (V) | OVP Turn Off Response Time (ns) | Package | Package Alt. |
| 2.5V | 5.5V | 40 | 270 | 11/40 | CCx = ±40 SBUx = ±30 |
70 | WLCSP44-16 1.70 x 1.70 |
TQFN33-20 |
Technical Documentation
| Description | Documents | Type |
|---|---|---|
| Datasheet | KTU1121A-04a | |
| Package Outline Drawing | TQFN33-20 UAJ POD |
Evaluation Tools
| Documents | Type |
|
|---|---|---|
| User Manual | ||
| Quick Start Guide | ||
| Bill of Materials | XLSX | |
| Schematic | ||
| 3D Board |
Purchase
| Part Number | Marking | Operating Temperature | Package |
| KTU1121AEGAB-TA | RPXXYYZZZZ1 | -40°C to +85°C | WLCSP44-16 |
| KTU1121AEUAJ-TD | RPYWZ2 | -40°C to +85°C | TQFN33-20 |
| Purchase Options |
|---|
| Buy from Digi-Key |
| Buy from Mouser |
