JAJSAH6H January 2006 – October 2017 LM3100
PRODUCTION DATA.
The LM3100 Step Down Switching Regulator features all functions needed to implement a cost effective, efficient buck power converter capable of supplying 1.5 A to a load. This voltage regulator contains Dual 40-V N-Channel buck synchronous switches and is available in a thermally enhanced HTSSOP-20 package. The Constant ON-Time (COT) regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. It will work correctly even with an all ceramic output capacitor network and does not rely on the output capacitor’s ESR for stability. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit detection circuit, internally set at 1.9 A, inhibits the high-side switch until the inductor current level subsides. Please refer to the functional block diagram with a typical application circuit.
The LM3100 can be applied in numerous applications and can operate efficiently from inputs as high as 36 V. Protection features include: Thermal shutdown, VCC under-voltage lockout, gate drive under-voltage lockout.