LM2830XMF/NOPB National Semiconductor, LM2830XMF/NOPB Datasheet
LM2830XMF/NOPB
Specifications of LM2830XMF/NOPB
LM2830XMFTR
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LM2830XMF/NOPB Summary of contents
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... Additional features include internal soft-start cir- cuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output over-voltage protection. Typical Application Circuit © 2010 National Semiconductor Corporation LM2830 Features ■ LM2830ZQ and LM2830XQ in the SOT23-5 package are Automotive Grade products that are AEC-Q100 grade 1 qualified (-40° ...
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Connection Diagrams 6-Pin LLP Ordering Information Frequency Order Number Option LM2830XMF LM2830XMFX LM2830XQMF 1.6MHz LM2830XQMFX LM2830XQMFE LM2830ZMF LM2830ZMFX LM2830ZQMF LM2830ZQMFX 3MHz LM2830ZQMFE LM2830ZSD LM2830ZSDX *Automotive Grade (Q) product incorporates enhanced manufacturing and support processes for the automotive market, including defect ...
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Pin Descriptions 5-Pin SOT23 Pin Name Function 1 SW Output switch. Connect to the inductor and catch diode. 2 GND Signal and power ground pin. Place the bottom resistor of the feedback network as close as possible to this pin. ...
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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. VIN FB Voltage EN Voltage SW Voltage Electrical Characteristics type are for T = 25°C only; limits in boldface type apply over the junction temperature (T J and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm 25° ...
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Symbol Parameter Junction to Ambient θ LFPM Air Flow (Note θ Junction to Case (Note JC T Thermal Shutdown Temperature SD Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Range ...
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Typical Performance Characteristics All curves taken at VIN = 5.0V with configuration in typical application circuit shown in Application Information section of this datasheet 25°C, unless otherwise specified. J η vs Load "X" Vin = 5V ...
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Load Regulation Vin = 5V 1.8V (All Options) Oscillator Frequency vs Temperature - "X" Current Limit vs Temperature Vin = 3.3V Load Regulation Vin = 5V 3.3V (All Options) 20197484 Oscillator Frequency vs Temperature - "Z" ...
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RDSON vs Temperature (SOT23-5 Package) LM2830Z I (Quiescent Current Temperature FB www.national.com LM2830X I 20197488 Line Regulation Vo = 1.8V 500mA 20197437 20197427 8 (Quiescent Current) Q 20197428 20197453 ...
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Gain vs Frequency (Vin = 5V 1.2V @ 1A) Simplified Block Diagram Phase Plot vs Frequency (Vin = 5V 1.2V @ 1A) 20197456 FIGURE 1. 9 20197457 20197404 www.national.com ...
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Applications Information THEORY OF OPERATION The LM2830 is a constant frequency PWM buck regulator IC that delivers a 1.0A load current. The regulator has a preset switching frequency of 1.6MHz or 3.0MHz. This high frequen- cy allows the LM2830 to ...
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Design Guide INDUCTOR SELECTION The Duty Cycle (D) can be approximated quickly using the ratio of output voltage ( input voltage (V O The catch diode (D1) forward voltage drop and the voltage drop across the internal PMOS ...
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ESL. For MLCCs it is recommended to use X7R or X5R type capacitors due to their tolerance and temperature characteristics. Con- sult capacitor manufacturer datasheets to see how rated capacitance varies ...
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Calculating Efficiency, and Junction Temperature The complete LM2830 DC/DC converter efficiency can be calculated in the following manner. Or Calculations for determining the most significant power loss- es are shown below. Other losses totaling less than 2% are not discussed. ...
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... Once this is determined, the maximum ambient temperature allowed for a desired junction temperature can be found. An example of calculating R National Semiconductor LM2830 LLP demonstration board is shown below. The four layer PCB is constructed using FR4 with ½ oz copper traces. The copper ground plane is on the bottom layer. The ground plane is accessed by two vias ...
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FIGURE 5. 6-Lead LLP PCB Dog Bone Layout 15 www.national.com ...
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LM2830X Design Example 1 FIGURE 6. LM2830X (1.6MHz): Vin = 5V 1.2V @ 1.0A Part ID U1 C1, Input Cap C2, Output Cap D1, Catch Diode 0. www.national.com Bill of Materials Part Value Manufacturer ...
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LM2830X Design Example 2 FIGURE 7. LM2830X (1.6MHz): Vin = 5V 0.6V @ 1.0A Part ID U1 1.0A Buck Regulator C1, Input Cap C2, Output Cap D1, Catch Diode 0. Bill of Materials Part ...
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LM2830X Design Example 3 FIGURE 8. LM2830X (1.6MHz): Vin = 5V 3.3V @ 1.0A Part ID U1 C1, Input Cap C2, Output Cap D1, Catch Diode 0. www.national.com Bill of Materials Part Value Manufacturer ...
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LM2830Z Design Example 4 FIGURE 9. LM2830Z (3MHz): Vin = 5V 3.3V @ 1.0A Part ID U1 1.0A Buck Regulator C1, Input Cap C2, Output Cap D1, Catch Diode 0. Bill of Materials ...
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LM2830Z Design Example 5 FIGURE 10. LM2830Z (3MHz): Vin = 5V 1.2V @ 1.0A Part ID U1 C1, Input Cap C2, Output Cap D1, Catch Diode 0. www.national.com Bill of Materials Part Value Manufacturer ...
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LM2830X Dual Converters with Delayed Enabled Design Example 6 FIGURE 11. LM2830X (1.6MHz): Vin = 5V 1.2V @ 1.0A & 3.3V @1.0A Part ID U1, U2 1.0A Buck Regulator U3 C1, C3 Input Cap C2, C4 Output Cap ...
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LM2830X Buck Converter & Voltage Double Circuit with LDO Follower Design Example 7 FIGURE 12. LM2830X (1.6MHz): Vin = 5V 3.3V @ 1.0A & LP2986-5.0 @ 150mA Part ID U1 1.0A Buck Regulator U2 C1, Input Cap C2, ...
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Physical Dimensions inches (millimeters) unless otherwise noted 5-Lead SOT-23 Package NS Package Number MF05A 6-Lead LLP Package NS Package Number SDE06A 23 www.national.com ...
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