LM5009EVAL National Semiconductor, LM5009EVAL Datasheet
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LM5009EVAL
Specifications of LM5009EVAL
Related parts for LM5009EVAL
LM5009EVAL Summary of contents
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... LM5009 Evaluation Board Introduction The LM5009EVAL evaluation board provides the design en- gineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 10V output over an input range of 12V - 95V. The circuit delivers load currents to 150 mA, with current limit ≊ ...
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Board Connection/Start-up The input connections are made to the J1 connector. The load is normally connected to the V1 and GND terminals of the J3 connector. Ensure the wires are adequately sized for the in- tended load current. Before start-up ...
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B) Intermediate Ripple Level Configuration: This configu- ration generates more ripple at V than the above config- OUT1 uration, but uses one less capacitor. If some ripple can be FIGURE 3. Intermediate Ripple Level Configuration Using C6 and R4 ≥ ...
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Current Limit The LM5009 contains an intelligent current limit off-timer. The current limit threshold is 310 mA, ±60 mA. If the current in the buck switch (the peak of the inductor’s current waveform) reaches the threshold the present on-time cycle ...
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... TDK C2012X7R2A222M TDK C2012X7R2A103M Unpopulated Diodes Inc. DFLS1100 Power DI 123 TDK SLF7045T-221MR33 Vishay CRCW08053403F CRCW08053K01FKEA CRCW08051K00FKEA Vishay CRCW0805000Z Vishay CRCW08052553F Vishay CRCW08051153F National Semiconductor LM5009MM 5 Package Value 1210 1.0 µF, 100V 1210 22 µF, 16V 0805 0.1 µF, 100V 0805 0.022 µF, 100V ...
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Circuit Performance FIGURE 6. Efficiency vs Load Current FIGURE 7. Efficiency vs Input Voltage www.national.com 20181112 FIGURE 8. Output Voltage Ripple 20181113 FIGURE 9. Switching Frequency vs. Load Current 6 20181114 20181115 ...
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PCB Layout Board Silkscreen Board Top Layer 7 20181116 20181117 www.national.com ...
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Board Bottom Layer (viewed from top) 8 20181118 ...
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