器件名称: LM3075MTC
功能描述: High Efficiency, Synchronous Current Mode Buck Controller
文件大小: 857.59KB 共18页
简 介:LM3075 High Efficiency, Synchronous Current Mode Buck Controller
September 2005
LM3075 High Efficiency, Synchronous Current Mode Buck Controller
General Description
The LM3075 is a current mode control, synchronous buck controller IC. Use of synchronous rectification and pulseskipping 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.
Features
n n n n n Input voltage range of 4.5V-36V Current Mode Control Skip mode operation available Cycle by cycle current limit 1.24V ± 2% Reference
Applications
n Automotive Power Supplies n Distributed Power Systems
Typical Application Circuit
20162301
2005 National Semiconductor Corporation
DS201623
www.national.com
LM3075
Connection Diagram
TOP VIEW
20162302
20-Lead TSSOP (MTC)
Ordering Information
Order Number LM3075MTC LM3075MTCX Package Type TSSOP-20 TSSOP-20 NSC Package Drawing MTC-20 MTC-20 Supplied As 73 Units per Anti-Static Tube 2500 Units on Tape and Reel
Pin Descriptions
LM3075 Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1……
