LM25069MM-2EVAL National Semiconductor, LM25069MM-2EVAL Datasheet
LM25069MM-2EVAL
Specifications of LM25069MM-2EVAL
Related parts for LM25069MM-2EVAL
LM25069MM-2EVAL 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- © 2009 National Semiconductor Corporation National Semiconductor Application Note 1947 Dennis Morgan June 29, 2009 • ...
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Theory of Operation The LM25069 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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OVLO pin. The internal 20 µA current sources provide hys- teresis for each of the thresholds. FIGURE 3. Power Up Using Power Limit and Current Limit Board Layout and Probing Cautions The pictorial in Figure 1 shows the placement of ...
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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 50 mV, the LM25069 ...
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UVLO/OVLO Input Voltage Thresholds As supplied, the input voltage UVLO thresholds on this eval- uation board are approximately 4.8V increasing, and 4.5V decreasing. The OVLO thresholds are approximately 15V in- creasing, and 14.6V decreasing. The four thresholds are determined by ...
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... The companion Hot-Swap IC, the LM25069-1, latches off af- ter a fault detection, with external control required for restart. Restart is accomplished by momentarily taking the UVLO pin 30091516 below its threshold removing and re-applying the input voltage at VIN. Contact the nearest National Semiconductor sales office to obtain samples of the LM25069-1. 6 ...
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Performance Characteristics Horizontal Resolution: 100 ms/div Trace 10V/div IN Trace 2: TIMER Pin, 1V/div Trace 10V/div OUT V = 12V 0.68 µ FIGURE 8. Insertion Time Delay Horizontal Resolution: 1 ...
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Horizontal Resolution: 2 ms/div Trace 2: TIMER Pin, 1V/div Trace 10V/div OUT Trace 4: Input Current, 2A/div V = 14V, Load = 3Ω 0.68 µ FIGURE 12. Restart Fault Timeout www.national.com 30091521 Horizontal ...
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... Panasonic ECJ-2FB1A684K Fairchild FDD8874 Vishay CRCW120614K0F Vishay CRCW08053K48F Vishay CRCW080551K47F Vishay CRCW1206100KF Vishay CRCW08050000Z Vishay CRCW080534K8F Vishay WSL2010R0100F NKK M2012SS1W03-RO Nat’l Semi LM25069MM-2 Diodes Inc. SMBJ16A 9 Package Value 0805 1000 pF, 100V Surf. Mount 220 µF, 35V 1206 0.1 µF, 100V Surf. Mount 100 µ ...
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PC Board Layout www.national.com Board Silkscreen Board Top Layer Board Bottom Layer (viewed from top) 10 30091524 30091525 30091526 ...
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Notes 11 www.national.com ...
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