LM2574BN Micrel Inc, LM2574BN Datasheet
LM2574BN
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LM2574BN Summary of contents
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LM2574 General Description The LM2574 family is a series of easy to use fixed and ad- justable switching voltage regulators. The LM2574 contains all of the active circuitry necessary to construct a stepdown (buck) switching regulator and requires a minimum ...
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... LM2574 Ordering Information Part Number Standard Pb-Free LM2574BN LM2574YN LM2574-3.3BN LM2574-3.3YN LM2574-5.0BN LM2574-5.0YN Pin Configuration PWR GND 4 M9999-072805 Junction Temp. Range Package –40ºC to +85ºC 8-pin Plastic DIP –40ºC to +85ºC 8-pin Plastic DIP –40ºC to +85ºC ...
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LM2574 Absolute Maximum Ratings Maximum Supply Voltage LM2574 ...................................................................... 45V OFF Pin Input Voltage ................................ –0.3V ≤ V ≤ V Output Voltage to Ground (Steady State) ...................... –1V Power Dissipation ..................................... Internally Limited Storage Temperature Range (T ) ............. –65°C ...
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LM2574 Electrical Characteristics Symbol Parameter Device Parameters, Adjustable Regulator I Feedback Bias Current B Device Parameters, Fixed and Adjustable Regulators f Oscillator Frequency o V Saturation Voltage SAT DC Max Duty Cycle (ON) I Current Limit CL I Output Leakage ...
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LM2574 Typical Characteristics (Circuit of Figure 1) Supply Current 20 Measured at Ground Pin 25˚ OUT = 0. ...
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LM2574 Typical Performance Characteristics (continued) Feedback Voltage -10 -15 -20 -25 -75 -50 - TEM PER ATU ˚ Adjustable ...
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LM2574 Block Diagrams INTERNAL REGULATOR F EED - 4 BACK FIXED GAIN 3.1k + COM PARAT OR 1. 1.23V BAND-GAP 52 kHz RESET REFERENCE OSCILLATOR SHUTDOWN Note: ...
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... LM2574 Package Information 0.018 (0.57) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This 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. ...