LM5069EVAL/NOPB National Semiconductor, LM5069EVAL/NOPB Datasheet
LM5069EVAL/NOPB
Specifications of LM5069EVAL/NOPB
Related parts for LM5069EVAL/NOPB
LM5069EVAL/NOPB Summary of contents
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... The system voltage connected to the input terminal block (J1). The exter- nal load connected to the output terminal block (J2). Capacitors C3 and C4 represent capacitance which is typi- © 2008 National Semiconductor Corporation National Semiconductor Application Note 1522 Dennis Morgan March 7, 2008 • ...
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Theory of Operation The LM5069 provides intelligent control of the power supply connections of a load which connected to a live power source. The two primary functions of a hot swap circuit are in- rush current limiting ...
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The PGD logic level output is low during turn-on, and switches high when the output voltage at OUT has increased to within 1.25V of the input voltage, signifying the turn-on procedure is essentially complete. If the OUT voltage decreases more ...
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Circuit Parameter Changes Current Limit The current limit threshold is set by R10 according to the fol- lowing equation mV/R10 LIM If the load current increases such that the voltage across R10 reaches 55 mV, the LM5069 ...
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UVLO/OVLO Input Voltage Thresholds As supplied, the input voltage UVLO thresholds on this eval- uation board are approximately 34.4V increasing, and 32.4V decreasing. The OVLO thresholds are approximately 77.7V increasing, and 75.7V decreasing. The four thresholds are determined by resistors ...
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... The companion Hot-Swap IC, the LM5069-1, latches off after a fault detection, with external control required for restart. 20205316 Restart is accomplished by momentarily taking the UVLO pin below 2.5V removing and re-applying the input voltage at VIN. Contact the nearest National Semiconductor sales of- fice to obtain samples of the LM5069-1. 6 ...
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Performance Characteristics Horizontal Resolution: 100 ms/div Trace 1: TIMER Pin, 2V/div Trace 2: Vin, 50V/div Trace 3: Vout, 50V/div Ct = 0.82 µF Horizontal Resolution: 1 ms/div Trace 1: GATE Pin, 20V/div Trace 2: PGOOD Pin, 50V/div Trace 3: Vout, ...
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Horizontal Resolution: 2 ms/div Trace 1: GATE Pin, 20V/div Trace 2: PGOOD Pin, 50V/div Trace 3: Vout, 20V/div Trace 4: Input Current, 2A/div V = 36V IN Horizontal Resolution: 10 ms/div Trace 1: TIMER Pin, 2V/div Trace 2: GATE Pin, ...
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Horizontal Resolution: 1s/div Trace 2: TIMER Pin, 2V/div Trace 3: Vout, 5V/div Ct = 0.82 µF Horizontal Resolution: 2 ms/div Trace 1: UVLO Pin, 2V/div Trace 2: GATE Pin, 50V/div Trace 3: Vout, 50V/div Trace 4: Input Current, 5A/div V ...
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Horizontal Resolution: 5 µs/div Trace 1: PGOOD Pin, 20V/div Trace 2: UVLO Pin, 2V/div Trace 3: Vout, 20V/div www.national.com 20205323 FIGURE 14. Turn-Off Using the UVLO Pin 10 ...
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Bill of Materials Item Description C1 Ceramic Capacitor C5 Ceramic Capacitor C6 Unpopulated C8 Ceramic Capacitor Q1 N-Channel MOSFET R1 Resistor R2 Resistor R3 Resistor R4 Unpopulated R7 Resistor R8 Resistor R9 Resistor R10 Resistor U1 Hot Swap IC Z1 ...
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PC Board Layout www.national.com Board Silkscreen Board Top Layer Board Bottom Layer (viewed from top) 12 20205324 20205325 20205326 ...
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Notes 13 www.national.com ...
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