Part # LM2694 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM2694 30V, 600 mA Step Down Switching Regulator

Part Details:

LM2694 May 2006 30V LM2694 , 30V, 600 mA Step Down Switching Regulator 600 General Description n No loop compensation required n Ultra-Fast transient response mA The LM2694 Step Down Switching Regulator features all of n Operating frequency remains constant with load current the functions needed to implement a low cost, efficient, buck and input voltage variations bias regulator capable of supplying 0.6A to the load. This Step buck regulator contains an N-Channel Buck Switch, and is n Maximum Duty Cycle Limited During Start-Up available in the 3 x 3 thermally enhanced LLP-10 package n Adjustable output voltage and a TSSOP-14 package. The feedback regulation scheme n Valley Current Limit At 0.6A requires no loop compensation, results in fast load transient n Maximum switching frequency: 1 MHz Down response, and simplifies circuit implementation. The operat- n Precision internal reference ing frequency remains constant with line and load variations n Low bias current due to the inverse relationship between the input voltage and n Highly efficient operation the on-time. The valley current limit results in a smooth n Thermal shutdown Switching transition from constant voltage to constant current modewhen current limit is detected, reducing the frequency andoutput voltage, without the use of foldback. Additional fea- Typical Applications tures include: VCC under-voltage lockout, thermal shut- n High Efficiency Point-Of-Load (POL) Regulator down, gate drive under-voltage lockout, and maximum duty n Non-Isolated Telecommunication Buck Regulator cycle limiter. n Secondary High Voltage Post Regulator Features Package Regulator n Integrated N-Channel buck switch n LLP-10 (3 mm x 3 mm) w/Exposed Pad n Integrated start-up regulator n TSSOP-14 n Input Voltage Range: 8V to 30V Basic Step Down Regulator 20187001 © 2006 National Semiconductor Corporation DS201870

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LM2694.pdf Datasheet