LM5009MM/NOPB National Semiconductor, LM5009MM/NOPB Datasheet
LM5009MM/NOPB
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LM5009MMNOPBTR
LM5009MMTR
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LM5009MM/NOPB Summary of contents
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... Other features include: Thermal Shutdown, Vcc under-voltage lockout, Gate drive under-voltage lockout, and Maximum Duty Cycle limiter. Typical Application Circuit © 2010 National Semiconductor Corporation LM5009 Features ■ Integrated N-Channel MOSFET ■ ...
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Connection Diagram Ordering Information Order Number Package Type LM5009MM MSOP-8 LM5009MMX MSOP-8 LM5009SDC LLP-8 LM5009SDCX LLP-8 www.national.com 20165802 8-Lead MSOP, LLP NSC Package Drawing MUA08A MUA08A SDC08B SDC08B 2 Supplied As 1000 Units on Tape and Reel 3500 Units per ...
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Pin Descriptions Pin Name 1 SW Switching output 2 BST Boost Pin 3 RCL Current Limit off-time set pin 4 RTN Ground pin 5 FB Feedback input from Regulated Output 6 RON/SD On-time set pin 7 VCC Output from the ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications RTN IN BST to RTN SW to RTN (Steady State) ESD Rating (Note 4) Human Body Model BST to VCC Electrical Characteristics Limits in standard type are for T = 25° ...
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Symbol Parameter Minimum Off Time Minimum Off Timer Regulation and OV Comparators FB Reference Threshold FB Over-Voltage Threshold FB Bias Current Thermal Shutdown Tsd Thermal Shutdown Temp. Thermal Shutdown Hysteresis Thermal Resistance θ Junction to Ambient JA Note 1: Absolute ...
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Typical Performance Characteristics On-Time Current Limit Off-Time Current vs Applied V CC www.national.com and R ON 20165809 and 20165812 Voltage CC 20165811 and ...
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Typical Application Circuit and Block Diagram Functional Description The LM5009 Step Down Switching Regulator features all the functions needed to implement a low cost, efficient, Buck bias power converter. This high voltage regulator contains a 100 V N-Channel Buck Switch, ...
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The output voltage ( programmed by two external re- OUT sistors as shown in Figure 1. The regulation point is calculated as follows 2.5 x ( OUT This regulator regulates the output ...
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Current Limit The LM5009 contains an intelligent current limit OFF timer. If the current in the Buck switch exceeds 0.31A the present cy- cle is immediately terminated, and a non-resetable OFF timer is initiated. The length of off-time is controlled ...
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At Vin = 90V, L1(min) calculates to 132 µH. The next larger standard value (150 µH) is chosen and with this value I calculates to 176 mA p-p at Vin = 90V, and 33 mA p-p at Vin = 12V. ...
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C5: This capacitor helps avoid supply voltage transients and ringing due to long lead inductance at VIN. A low ESR, 0.1µF ceramic chip capacitor is recommended, located close to the LM5009. FINAL CIRCUIT The final circuit is shown in Figure ...
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... TDK SLF7045T-151MR33 Resistor Vishay CRCW12063011F Resistor Vishay CRCW12061001F Resistor Vishay CRCW12063R00F Resistor Vishay CRCW12062373F Resistor Vishay CRCW12061693F National Semiconductor LM5009 FIGURE 6. Efficiency vs Load Current and V FIGURE 7. Efficiency vs V and Load Current Value 1 µF, 100V 15 µF, 25V 0.1 µF, 50V 0.022 µF, 50V 0.1 µ ...
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FIGURE Load Current OUT 20165831 FIGURE 9. Current Limit www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Lead MSOP Package NS Package Number MUA08A 14 ...
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LLP Package NS Package Number SDC08B 15 www.national.com ...
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