LM2574-5.0BWM MICREL [Micrel Semiconductor], LM2574-5.0BWM Datasheet
LM2574-5.0BWM
Related parts for LM2574-5.0BWM
LM2574-5.0BWM Summary of contents
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... LM2574 General Description The LM2574 family is a series of easy to use fixed and adjustable switching voltage regulators. The LM2574 con- tains all of the active circuitry necessary to construct a stepdown (buck) switching regulator and requires a minimum of external components. The LM2574 is available in 3.3V and 5V fixed output versions adjustable version with an output voltage range of 1 ...
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... LM2574 Pin Configuration M9999-122303 FB 1 SIG GND 2 ON/OFF 3 PWR GND 4 8-Pin DIP ( OUTPUT VIN December 2003 Micrel ...
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... All limits at temperature extremes are guaranteed via testing. 3. External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2574 is used as shown in Figure 1 test circuit, system performance will be shown in system parameters section of teristics.” ...
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... ON/OFF = 5V (OFF) ON/OFF = 0V (ON LM2574 330µH (adjustable) OUT PWR SIG ON/ GND GND OFF 11DQ06 Figure 2. Adjustable Regulator Test Circuit LM2574– C 330 OUT PWR SIG ON/ GND GND OFF 11DQ06 Figure 3. Fixed Regulator Test Circuit 4 Min Typ 50 47 ...
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... LM2574 Typical Characteristics (Circuit of Figure 1) Supply Current 20 Measured at Ground Pin 25˚ OUT = LOAD to 0. INPUT VOLTAGE (V) Current Limit 1 25V 1 0.5 0 -75 -50 - 100 125 150 JUNCTION TEMPERATURE (˚C) Minimum Operating Voltage 5 ...
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... LM2574 Typical Performance Characteristics (continued) Normalized Feedback Voltage -10 -15 -20 -25 -75 -50 - 100 125 150 * Adjustable version only M9999-122303 Feedback Voltage vs Duty Cycle 12V 15 I LOAD = 100mA Normalized 25˚ -10 -15 -20 0 JUNCTION TEMPERATURE (˚C) ...
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... LM2574 Block Diagrams INTERNAL REGULATOR FEED- 4 BACK FIXED GAIN ERROR AMP 3.1k COMPARATOR + 1. 1.23V BAND-GAP 52 kHz RESET REFERENCE OSCILLATOR Note: Pin numbers are for the TO-220 package Fixed Regulator December 2003 ON/OFF ON/OFF 1 FEED- 1/2 AMP 4 BACK SWITCH DRIVER 2 OUTPUT THERMAL ...
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... LM2574 Package Information 0.018 (0.57) MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...