LM20154MH/NOPB National Semiconductor, LM20154MH/NOPB Datasheet
LM20154MH/NOPB
Specifications of LM20154MH/NOPB
LM20154MH
Related parts for LM20154MH/NOPB
LM20154MH/NOPB Summary of contents
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... The LM20154 is offered in an exposed pad 16-pin eTSSOP package that can be soldered to the PCB, eliminating the need for bulky heatsinks. Typical Application Circuit ® PowerWise is a registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation Features ■ Input voltage range 2.95V to 5.5V ■ ...
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Connection Diagram Ordering Information Order Number Package Type LM20154MH eTSSOP-16 LM20154MHE LM20154MHX Pin Descriptions Pin # Name 1 SS/TRK Soft-Start or Tracking control input. An internal 5 µA current source charges an external capacitor to set the Soft-Start ramp rate. ...
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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. Voltages from the indicated pins to GND AVIN, PVIN, EN, PGOOD, SS/ TRK, COMP, FB, SYNCOUT Storage Temperature Junction Temperature Electrical Characteristics Limits in standard type are for T = 25° ...
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Symbol Parameter V EN Pin Turn on Threshold IH_EN V EN Pin Hysteresis EN_HYS Thermal Shutdown T Thermal Shutdown SD T Thermal Shutdown Hysteresis SD_HYS Thermal Resistance θ Junction to Ambient JA Note 1: Absolute Maximum Ratings indicate limits beyond ...
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Error Amplifier Gain vs. Frequency 30030836 Load Regulation 30030838 Switching Frequency vs. Temperature 30030839 Line Regulation Feedback Pin Voltage vs. Temperature Synchronization Output 5 30030837 30030851 30030861 www.national.com ...
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Quiescent Current vs. V Enable Threshold vs. Temperature Peak Current Limit vs. Temperature www.national.com (Not Switching) IN 30030840 30030828 30030842 6 Shutdown Current vs. Temperature 30030841 UVLO Threshold vs. Temperature 30030845 Peak Current Limit vs. V OUT 30030854 ...
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Peak Current Limit vs 30030855 Line Transient Response 30030843 Start-Up (Tracking) 30030833 Load Transient Response Start-Up (Soft-Start) Power Down 7 30030834 30030844 30030832 www.national.com ...
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Short Circuit Input Current vs. V www.national.com P IN 30030856 8 vs. I GOOD PGOOD 30030827 ...
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Block Diagram 9 30030803 www.national.com ...
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Operation Description GENERAL The LM20154 switching regulator features all of the functions necessary to implement an efficient low voltage buck regula- tor using a minimum number of external components. This easy to use regulator features two integrated switches and is ...
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UVLO The LM20154 has a built-in under-voltage lockout protection circuit that keeps the device from switching until the input voltage reaches 2.7V (typical). The UVLO threshold has hysteresis that keeps the device from responding to power-on glitches ...
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FIGURE 1. Modes of Operation for LM20154 12 30030805 ...
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Design Guide This section walks the designer through the steps necessary to select the external components to build a fully functional power supply. As with any DC-DC converter numerous trade- offs are possible to optimize the design for efficiency, size, ...
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Where, C (F) is the minimum required output capacitance, OUT L (H) is the value of the inductor, V voltage drop ignoring loop bandwidth considerations, ΔI (A) is the load step change, R STEP capacitor ESR, V (V) is the ...
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To achieve a -20dB/decade slope, the error amplifier zero, located should positioned to cancel the output filter Z(EA) pole ( ...
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To insure a specific logic low level is met the pull-up resistor should be selected using the formula below. Where the high pull up voltage for the resistor PULLUP R and V is the logic low ...
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TRACK pin should exceed 1V to provide sufficient overdrive and transient immunity. THERMAL CONSIDERATIONS The thermal characteristics of the LM20154 are specified us- ing the parameter θ , which relates the junction temperature JA to the ambient temperature. Although the ...
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FIGURE 10. Schematic of LM20154 Highlighting Layout Sensitive Nodes Typical Application Circuits This section provides several application solutions with a bill of materials. All bill of materials reference the below figure. www.national.com The compensation for these solutions were optimized to ...
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... GRM188R60J105KA01 CRCW06033571F-e3 VJ0603Y332KXXA VJ0603Y333KXXA CRCW06034991F-e3 CRCW06031002F-e3 CRCW06033241F-e3 19 Manufacturer Qty National Semiconductor 1 Murata 1 Murata 1 Coilcraft 1 Vishay-Dale 1 Murata 1 Murata 1 Vishay-Dale 1 Vishay-Vitramon 1 Vishay-Vitramon 1 Vishay-Dale 1 Vishay-Dale 1 Vishay-Dale 1 = 4A) Manufacturer Qty National Semiconductor 1 Murata 1 Murata 1 Coilcraft 1 Vishay-Dale 1 Murata 1 Murata 1 Vishay-Dale 1 Vishay-Vitramon 1 Vishay-Vitramon 1 Vishay-Dale 1 Vishay-Dale 1 Vishay-Dale 1 www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 16-Lead eTSSOP Package NS Package Number MXA16A 20 ...
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Notes 21 www.national.com ...
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