lm22673mrx-adj National Semiconductor Corporation, lm22673mrx-adj Datasheet
lm22673mrx-adj
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lm22673mrx-adj Summary of contents
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... The current limit threshold can be adjusted using an external resistor. An ad- justable soft-start feature is provided by selecting an appro- priate external soft-start capacitor. Simplified Application Schematic © 2008 National Semiconductor Corporation Features ■ Wide input voltage range: 4.5V to 42V ■ ...
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... Connection Diagrams Ordering Information Output Voltage Order Number ADJ LM22673MR-ADJ ADJ LM22673MRE-ADJ ADJ LM22673MRX-ADJ ADJ LM22673TJE-ADJ ADJ LM22673TJ-ADJ 5.0 LM22673MR-5.0 5.0 LM22673MRE-5.0 5.0 LM22673MRX-5.0 5.0 LM22673TJE-5.0 5.0 LM22673TJ-5.0 www.national.com 30076240 8-Lead Plastic PSOP-8 Package NS Package Number MRA08B 7-Lead Plastic TO-263 THIN Package NS Package Number TJ7A Package Type ...
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Pin Descriptions Pin Numbers Pin Numbers Name PSOP-8 TO-263 THIN Package Package 1 3 BOOT IADJ GND 7 2 VIN Description Application Information Bootstrap ...
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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 to GND SS, IADJ Pin Voltage SW to GND (Note 2) Boot Pin Voltage FB Pin Voltage Power ...
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Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond ...
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Normalized Feedback Voltage vs Temperature Normalized Feedback Voltage vs Input Voltage Current Limit vs IADJ Resistor www.national.com Normalized R 30076207 Soft-start Current vs Temperature 30076209 30076213 6 vs Temperature DS(ON) 30076208 30076211 ...
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Typical Application Circuit and Block Diagram FIGURE 1. 3. OUT 7 30076214 www.national.com ...
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Detailed Operating Description The LM22673 switching regulator features all of the functions necessary to implement an efficient high voltage buck regu- lator using a minimum of external components. This easy to use regulator integrates a 42V N-Channel switch with an ...
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If both equations do not hold true, a particular design will not have an effective current limit function which might damage the circuit during startup, over current conditions, or steady state over current and short circuit condition. Oftentimes a reduction ...
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Increasing the inductance will generally slow down the transient response but reduce the output voltage ripple amplitude. Reducing the inductance will generally improve the transient response but increase the output voltage ripple. The inductor must be rated for ...
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Schottky diodes are particularly important diode characteristics for high input voltage and low output voltage applications common to the LM22673. The reverse recovery characteristic determines how long the current ...
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PCB Layout Example for TO-263 THIN Package www.national.com 12 30076225 ...
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PCB Layout Example for PSOP-8 Package 13 30076241 www.national.com ...
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Schematic for Buck/Boost (Inverting) Application See AN-1888 for more information on the inverting (buck- boost) application generating a negative output voltage from a positive input voltage. www.national.com 30076226 14 ...
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Physical Dimensions inches (millimeters) unless otherwise noted 7-Lead Plastic TO-263 THIN Package NS Package Number TJ7A 8-Lead PSOP Package NS Package Number MRA08B 15 www.national.com ...
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