lm2854mhx-500 National Semiconductor Corporation, lm2854mhx-500 Datasheet
lm2854mhx-500
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lm2854mhx-500 Summary of contents
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... The LM2854 is available in an exposed pad TSSOP-16 package that en- hances the thermal performance of the regulator. Typical Application Circuit SIMPLE SWITCHER® Registered Trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation Features ■ ® ...
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... Connection Diagram Ordering Information Order Number Frequency LM2854MH-500 500 kHz LM2854MHX-500 LM2854MH-1000 1 MHz LM2854MHX-1000 www.national.com 30052802 Top View 16-Lead eTSSOP Package Type Package Drawing TSSOP-16 exposed pad MXA16A 2 Supplied As 92 Units, Rail 2500 Units, Tape and Reel 92 Units, Rail 2500 Units, Tape and Reel ...
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Pin Descriptions Pin Number Name 1 NC Reserved for factory use, this pin should be connected to GND to ensure proper operation. 2,3,4 PGND Power ground pins for the internal power switches. These pins should be connected together locally at ...
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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. PVIN, AVIN, SW, EN, FB GND ESD Susceptibility (Note 2) Power Dissipation Junction Temperature Storage Temperature Range ...
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Typical Performance Characteristics PVIN = AVIN = EN = 5.0V µF 10V X5R ceramic capacitor curves, bode plots and waveforms, and T Feedback Voltage vs. Temperature Soft Start Current vs Temperature Switching Frequency vs. Temperature ...
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NMOS R vs. Temperature DS(ON) Peak Current Limit vs. Temperature I (disabled) vs. V and Temperature www.national.com I (operating) vs 30052809 Feedback Voltage vs. V 30052811 Switching Frequency vs. V 30052813 6 and ...
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LM2854 1 MHz Efficiency vs. I OUT V = 0.8V 0.47 µH, 3.3 mΩ DCR OUT O 30052815 LM2854 1 MHz Efficiency vs. I OUT V = 1.2V 0.68 µH, 4.9 mΩ DCR OUT O 30052817 ...
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LM2854 500 kHz Efficiency vs 2.5V 2.2 µH, 16 mΩ DCR OUT O LM2854 500 kHz Efficiency vs 3.3V 1.5 µH, 9.7 mΩ DCR OUT O LM2854 1 MHz Bode ...
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LM2854 1 MHz Bode Plot V = 5.0V 1.8V OUT OUT R = 150 kΩ kΩ, C FB1 COMP COMP L = 0.82 µ 100 µF OUT OUT LM2854 ...
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LM2854 500 kHz Power Off Characteristic V = 5.0V 1.8V OUT OUT LM2854 500 kHz Switch Node Voltage (oscilloscope set at infinite persistence 5.0V 2.5V OUT LM2854 500 kHz Pre-Biased ...
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Block Diagram Applications Information GENERAL The LM2854 PowerWise® synchronous DC-DC buck regu- lator belongs to the National Semiconductor SIMPLE SWITCHER® family of switching regulators. Integration of the power MOSFETs and associated drivers, compensation com- ponent network and the PWM controller ...
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PRE-BIASED STARTUP CAPABILITY The LM2854 pre-biased state when the device starts up with an output voltage greater than zero. This often occurs in many multi-rail applications such as when powering an FP- GA, ASIC, or DSP. The ...
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LM2854. The input capacitor should be placed as close as possible to the PVIN and PGND pins to substantially eliminate the parasitic effects of any stray inductance or resistance on the PC board and supply lines. Additional bulk capacitance with ...
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ENABLE AND UVLO Using a resistor divider from VIN shown in the schematic diagram below, the input voltage at which the part begins switching can be increased above the normal input UVLO level according to For example, ...
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MHz options, respectively. This assumes a com- pensator pole cancels the output capacitor ESR zero. Fur- thermore, since the modulator gain is proportional to V ...
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TABLE 1. LM2854 500 kHz Compensation Component Values V (V) L (µ Min 5.0 1.5 40 1.5 100 1.5 100 2.2 40 2.2 100 2.2 100 3.3 1.5 40 1.5 100 1.5 100 2.2 40 2.2 ...
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Inductance (µH) DCR (mΩ) 0.47 14.5 1.0 24.0 0.47 8.4 0.47 6.0 0.68 8.7 0.82 10.6 1.0 13.1 1.5 18.5 2.2 15.7 0.47 3.5 0.68 4.5 1.0 17.3 1.5 10.4 2.2 16.1 0.56 10 0.47 3.3 0.68 4.8 1.0 7.5 ...
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PC Board Layout Guidelines PC board layout is an important part of DC-DC converter de- sign. Poor board layout can disrupt the performance of a DC- DC converter and surrounding circuitry by contributing to EMI, ground bounce and resistive voltage ...
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... National Semiconductor 1210 TDK 1210 TDK 7.1 x 6.5 x 3.0 mm TDK 0603 Vishay Dale 0603 Vishay Dale 0603 Vishay Dale 0603 Vishay Dale 0603 TDK 0603 Murata 0603 Murata 19 30052854 Manufacturer P/N LM2854MHX-500 C3225X5R1A476M C3225X5R0J107M SPM6530T-1R5M100 CRCW06032493F-e3 CRCW060328062F-e3 CRCW06031001F-e3 CRCW06031R0F-e3 C1608C0G1H330J GRM188R71C103KA01 GRM188R71A105KA61 www.national.com ...
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... Optimized for Electrolytic Input and Manufacturer P/N LM2854MHX-1000 Sanyo 6TPE150MIC2 Sanyo 6TPE330MIL IHLP2525CZER2R2M11 CRCW06031003F-e3 CRCW060324752F-e3 CRCW06031502F-e3 CRCW06031R0F-e3 TDK C1608C0G1H331J Murata GRM188R71C103KA01 Murata GRM188R71A105KA61 Manufacturer P/N LM2854MHX-1000 TDK C3216X5R0J476M TDK C3216X5R0J476M IHLP1616BZER0R47M11 CRCW04021103F-e3 CRCW04021001F-e3 CRCW04021R0F-e3 Murata GRM1555C1H270JZ01 Murata GRM155R71C103KA01 Murata GRM155R61A105KE15 ...
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Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead eTSSOP Package NS Package Number MXA16A 21 www.national.com ...
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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...