LM20145EVAL National Semiconductor, LM20145EVAL Datasheet
LM20145EVAL
Specifications of LM20145EVAL
Related parts for LM20145EVAL
LM20145EVAL Summary of contents
Page 1
... The LM20145 is available in an eTSSOP-16 package with an exposed pad for enhanced thermal performance. © 2007 National Semiconductor Corporation National Semiconductor Application Note 1693 Dennis Hudgins October 30, 2007 The LM20145 evaluation board has been designed to bal- ance overall solution size with the efficiency of the regulator. The evaluation board measures just under 1.3” ...
Page 2
... This terminal connects to the power good output of the device. There kΩ pull-up resistor from this pin to the input voltage. The voltage on this pin should not exceed 5.5V during normal operation and has an absolute maximum voltage rating of 6V. 2 Qty Manufacturer 1 National Semiconductor 1 Murata 1 Murata 1 Murata ...
Page 3
Performance Characteristics Efficiency vs Load Load Regulation (V IN 30033115 = 5V) 0. Load Transient Response 30033117 Startup Waveform 30033120 3 Line Regulation (I = 5A) LOAD 30033116 (200 µs/DIV) 30033119 www.national.com ...
Page 4
Component Selection This section provides a walk-through of the design process of the LM20145 evaluation board. Unless otherwise indicated all equations assume units of Amps (A) for current, Farads (F) for capacitance, Henries (H) for inductance, and Volts (V) for ...
Page 5
C C1 The capacitor C is used to set the crossover frequency of C1 the LM20145 control loop. Since this board was optimized to work well over the full input, output voltage, and frequency range, the value of C was ...
Page 6
PCB Layout www.national.com Top Layer Bottom Layer 6 30033113 30033114 ...
Page 7
Notes 7 www.national.com ...
Page 8
... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...