LM25061/9 Hot Swap Controllers

Product Highlights > LM25061/9 Hot Swap Controllers

            LM25061/9 Hot Swap Controllers
                    Positive Low Voltage Power Limiting Hot Swap Controllers
    

image of Texas Instruments' LM25061/9 Hot Swap Controllers Texas Instruments' LM25061/9 positive hot swap controllers provide intelligent control of the power supply voltage to the load during insertion and removal of circuit cards from a live system backplane or other "hot" power sources. The LM25061/9 provide in-rush current control to limit system voltage droop and transients. The current limit and power dissipation, in the external series N-Channel MOSFET, are programmable, ensuring operation within the Safe Operating Area (SOA). The POWER GOOD output indicates when the output voltage exceeds a programmable threshold. The input under-voltage level and hysteresis are programmable, as well as the initial insertion delay time and fault detection time. The LM25061/9-1 latches off after a fault detection, while the LM25061/9-2 automatically restarts at a fixed duty cycle. The LM25061/9 are available in a 10-pin MSOP package.

Typical Application Diagram

Features
Operating range: +2.9 V to +17 V In-rush current limit for safe board insertion into live power sources Programmable maximum power dissipation in the external pass device Adjustable current limit Circuit breaker function for severe over-current events Internal high side charge pump and gate driver for external N-channel MOSFET		Adjustable under-voltage lockout (UVLO) and hysteresis Initial insertion timer allows ringing and transients to subside after system connection Programmable fault timer avoids nuisance trips Active high open drain POWER GOOD output Available in latched fault and automatic restart versions

Applications
Server backplane systems Base station power distribution systems Solid state circuit breaker