Features Input voltage range of 4.5V-36V Current Mode Control Skip mode operation available Cycle by cycle current limit 1.24V ±2% Reference Description The LM3075 is a current mode control, synchronous buck controller IC. Use of synchronous rectification and pulse-skipping operation at light load achieves high efficiency over a wide load range. Fixed frequency operation can be obtained by disabling the pulse-skipping mode. Current mode control assures excellent line and load regulation and a wide loop bandwidth for fast response to load transients. Current mode control can be achieved by either sensing across the high side NFET or a sense resistor. The switching frequency can be selected as either 200 kHz or 300 kHz from an internal clock. The LM3075 is available with an adjustable output in a TSSOP-20 package. Applications Automotive Power Supplies Distributed Power Systems

Also Recommended LM25116▲ 42V With Emulated Current Mode LM5115 Higher Frequency With Synchronization

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

Datasheets

Title		Size	Date	Other Language
	LM3075 High Efficiency, Synchronous Current Mode Buck Controller	857 Kbytes	7-Sep-05

Application Notes

Title		Size	Date	Other Language
	AN-1411: Application Note 1411 LM3075 Evaluation Board Reference Design	957 Kbytes	4-Jan-06

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM3075EVAL	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LM3075MTC	lm25116MH	National Semiconductor	30 Nov 2009
LM3075MTCX	LM25116MHX	National Semiconductor	30 Nov 2009