5V/3A VBUS ISOURCE Load Switch for 28V EPR Systems
Description
The KTS1890 is a USB VBUS safety management load switch for 15W current-source output in systems with 28V EPR current sink input. The input operating range is 2.5V to 5.5V, but the output withstands up to 35VDC at the USB port. Current limit protection (CLP) is adjustable from 400mA to 4.0A. Low on-resistance minimizes heat and voltage droop. Soft-start (SS) limits inrush current. Reverse-current protection (RCP) acts as a 20mV “ideal diode” with fast recovery.
Additional safety management includes ultra-fast over-current protection (OCP), short-circuit protection (SCP) during and after soft-start, over temperature protection (OTP), and an integrated transient voltage suppressor (TVS) for IEC industry standard ±30kV ESD and ±130V surge ratings.
The KTS1890 is packaged in an advanced, fully “green” compliant, 2.49 x 1.99mm, 20-bump Wafer-Level Chip-Scale Package (WLCSP).
Features
- 2.5V to 5.5V Operating Voltage Range at IN
- 35VDC Abs. Max. Rating at OUT
- Adjustable Current Limit Protection (CLP)
- 400mA to 4.0A via RISET
- 27mΩ typ. On-Resistance from IN to OUT
- Soft-Start (SS) Limits Inrush Current
- “Ideal Diode” Reverse Current Protection (RCP)
- 20mV Forward Voltage and 15µs Fast Recovery
- 5.8A, 150ns Over-Current Protection (OCP)
- Short-Circuit Protection (SCP) during & after SS
- Over-Temperature Protection (OTP)
- Transient Voltage Suppression (TVS) at OUT
- ±130V Surge Protection (IEC61000-4-5)
- ±30kV ESD Contact Discharge (IEC61000-4-2)
- ±30kV ESD Air Gap Discharge (IEC61000-4-2)
- EN Enable Logic Input
- FON Fast ON Logic Input for Fast Role Swap (FRS)
- KTS1890A version only
- FLT Fault Open-Drain Logic Output
- Hiccup Mode Auto-Retry after Faults
- Safety approvals
- UL 2367, File No. E515099
- IEC 62368-1, File No. E515099
- -40°C to 85°C Operating Temperature Range
- 20-bump WLCSP 2.49 x 1.99mm (0.5mm pitch)
Applications
- Desktop PC, Notebooks, Netbooks, Tablets
- Docking Stations, Monitors, Gaming Consoles
- Set-Top Box, Networking, any USB ISOURCE Port
Packaging Information
| Package | Dimensions | Bumps | Package Type | Package Outline Drawing |
| WLCSP54-20 | 2.490mm x 1.990mm x 0.555mm | 20 | IAC |
Parameters
| Vin (min) | Vin (max) | Surge (V) | RON (mΩ) | IMAX (A) | RBP | RCP | OCP |
| 2.5V | 5.5V | ±100 | 27 | 5.0 | Yes | Yes | Yes |
Technical Documentation
| Description | Documents | Type |
|---|---|---|
| Datasheet | KTS1890-04c | |
| Package Outline Drawing | WLCSP54-20 IAC POD |
Purchase
| Part Number | Marking1 | Operating Temperature | Package |
| KTS1890EIAC-TA | SYXXYYZZZZ | -40°C to +85°C | WLCSP54-20 |
| KTS1890AEIAC-TA2 | TAXXYYZZZZ | -40°C to +85°C | WLCSP54-20 |
1 “SY” is the device ID, “XX” is the date code, “YY” is the assembly code, and “ZZZZ” is the serial number.
2 Future device; contact an authorized Kinetic Technologies representative for availability.
| Purchase Options |
|---|
| Buy from Digi-Key |
| Buy from Mouser |
