Features • Operating range: +2.9V to +17V • 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 • Adjustable output voltage monitoring 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 Description The LM25061 positive hot swap controller provides 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 provides in-rush current control to limit system voltage droop and transients. The current limit and power dissipation in the external series pass 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 LM25061-1 latches off after a fault detection, while the LM25061-2 automatically restarts at a fixed duty cycle. The LM25061 is available in a 10 pin MSOP package. Applications • Server Backplane Systems • Base Station Power Distribution Systems • Solid State Circuit Breaker

Also Recommended LM25069▲ Includes Adjustable Over-voltage Protection LM5067▲ -9 To -80V Input Range LM5069▲ +9V To +80V Input Range MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	LM25061 Positive Low Voltage Power Limiting Hot Swap Controller	591 Kbytes	15-Jul-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-1946: Application Note 1946 LM25061 Evaluation Board	470 Kbytes	29-Jun-09	中文

More Application Notes

Title		Size	Date	Other Language
	AN-1947: Application Note 1947 LM25069 Evaluation Board	483 Kbytes	29-Jun-09	中文

Design Tools

Title	Size	Date
LM25061 Quick Start Calculator	232 Kbytes	16-Jul-2009
Article - Power Limits Make Hot Swapping More Robust
Article - Hot-Swap Switch Provides Easy Thermal Protection

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM25061PMM-1	PVIP050	0	9960	0	0	855000	5	242608584
LM25061PMM-2	PVIP050	0	9960	0	0	855000	5	242608584
LM25061PMME-1	PVIP050	0	9960	0	0	855000	5	242608584
LM25061PMME-2	PVIP050	0	9960	0	0	855000	5	242608584
LM25061PMMX-1	PVIP050	0	9960	0	0	855000	5	242608584
LM25061PMMX-2	PVIP050	0	9960	0	0	855000	5	242608584

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.