Ideal Diode and Load Switch Controller with Reverse Input Protection
Description
The KTS1900 is an ideal diode and load switch controller with reverse input protection. It has an internal charge pump to enable the use of an N-channel MOSFET with low on-resistance to replace a Schottky diode or a P-channel MOSFET based solution. It also can be used with two Back-to-Back MOSFETs for Load switching and Inrush Control. With low on-resistance N-Channel MOSFET, the lower forward voltage drops, less power dissipation, and heat dissipation can be achieved.
The KTS1900 operates over a wide input voltage range from 4V to 60V to support a variety of telecom and server applications. It withstands a negative voltage down to -65V, which simplifies the system design.
The KTS1900 monitors the load current by sensing the forward voltage drop of the MOSFET. The forward voltage drop is regulated to avoid oscillation at light loads and minimize the power dissipation at high current conditions.
The KTS1900 turns off the MOSFET fast to prevent reverse current in case of failure of input voltage source. The EN pin is available to turn off the
controller and minimize the current drawn by the controller down to 3μA.
The KTS1900 is available in a small fully green compliant 6-Pin SOT-23 Package (2.9mm x 1.6mm).
Features
- 4V to 60V Wide Input Operating Range
- Reverse Voltage Protection to –60V Requirements with a Suitable TVS Diode
- ESD Ratings
- HBM: ±2kV
- CDM: ±750V
- Internal Charge Pump for External High-Side N-Channel MOSFET Driving
- Controller and MOSFET Driver Suitable for:
- Single MOSFET for Reverse Protection
- Two Back-to-Back MOSFETs, one for Reverse Protection and the other for Load Switching and Inrush Control
- 1.5A/30μA Sink/Source Current Capability of MOSFET Gate Driver
- EN Pin to Enable/Disable the Controller
- 1μA Shutdown Current
- 110μA Operating Quiescent Current
- 500ns Reverse Protection Response Time
- Small 6 Pin SOT23 Package (2.9mm x 1.6mm)
Applications
- Reverse Power Supply Protection
- Telecom/Server/Networking Systems
- Battery and System Protection
- Redundant Power Systems
- Industrial and Medical Systems
Packaging Information
| Package | Dimensions | Bumps | Package Code |
| SOT23-6L | 2.90mm x 1.60mm x 1.45mm | 6 | XAA |
Parameters
| Vin (min) | Vin (max) | Surge (V) | RON (mΩ) | IMAX (A) | RBP | RCP | OCP | OVP Adj. |
| 3V | 32V | ±100 | 25 | 5.0 | Yes | Yes | Yes | 4V~31V |
Technical Documentation
| Description | Documents | Type |
|---|---|---|
| Datasheet | KTS1900-04c | |
| Package Outline Drawing | SOT23-6 XAA POD |
Purchase
| Part Number | Marking | Operating Temperature | Package |
| KTS1900GXAA-TA | SPYWZ | -40°C to +125°C | SOT23-6L |
| Purchase Options |
|---|
| Buy from Digi-Key |
| Buy from Mouser |
