LM27313XMF/NOPB National Semiconductor, LM27313XMF/NOPB Datasheet
LM27313XMF/NOPB
Specifications of LM27313XMF/NOPB
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LM27313XMF/NOPB Summary of contents
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... Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies de- sign and reduces component count. Typical Application Circuits © 2007 National Semiconductor Corporation Features ■ 30V DMOS FET switch ■ 1.6 MHz switching frequency ■ ...
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Connection Diagram Ordering Information Order Number LM27313XMF LM27313XMFX Pin Descriptions Pin Name 1 SW Drain of the internal FET switch. 2 GND Analog and power ground Feedback point that connects to external resistive divider to set V 4 ...
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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. Storage Temperature Range Lead Temp. (Soldering, 5 sec.) Power Dissipation (Note 2) FB Pin Voltage SW Pin Voltage Input Supply Voltage Electrical Characteristics Unless otherwise specified: V ...
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Typical Performance Characteristics T = 25° (Active) vs Temperature IN Max. Duty Cycle vs Temperature R (ON) vs Temperature DS www.national.com Unless otherwise specified: V Oscillator Frequency vs Temperature 20216810 Feedback Voltage vs Temperature 20216855 Current Limit ...
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DS(ON) IN Efficiency vs Load Current (V = 15V) OUT Efficiency vs Load Current (V = 25V) OUT Efficiency vs Load Current (V 20216823 Efficiency vs Load Current (V 20216845 20216847 5 = 12V) OUT 20216814 = ...
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Block Diagram Theory of Operation The LM27313 is a switching converter IC that operates at a fixed frequency of 1.6 MHz using current-mode control for fast transient response over a wide input voltage range and in- corporate pulse-by-pulse current limiting ...
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Since this capacitor reduces the amount of voltage ripple seen at the input pin, it also reduces the amount of EMI passed back along that line to other circuitry. ...
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Since the LM27313 typical switching frequency is 1.6 MHz, the typical period is equal to 1/f SW(TYP) 0.625 µs. We will assume 5V 12V OUT 0.5V. The duty cycle is: Duty Cycle = ((12V ...
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FIGURE 4. Max. Load Current vs V DESIGN PARAMETERS V AND The value of the FET "ON" voltage (referred equations) is dependent on load current. A good approxima- tion can be obtained by multiplying ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 5-Lead SOT-23 Package Order Number LM27313XMF, or LM27313XMFX NS Package Number MF05A 10 ...
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Notes 11 www.national.com ...
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