LM317MQDCYRG4 ,4 Pin 500mA Adjustable Positive Voltage Regulator 4-SOT-223 -40 to 125Features 3 DescriptionThe LM317M is an adjustable 3-terminal positive1• Output Voltage Range Adjust ..
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LM317MQDCYRG4
4 Pin 500mA Adjustable Positive Voltage Regulator 4-SOT-223 -40 to 125
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LM317MSLVS297P –APRIL 2000–REVISED MARCH 2014
LM317M 3-Terminal Adjustable Regulator Features 3 DescriptionThe LM317Mis an adjustable 3-terminal positive Output Voltage Range Adjustable voltage regulator capable of supplying more thanfrom 1.25-Vto 37-V 500-mA over an output-voltage rangeof 1.25-Vto• Output Current Greater Than 500-mA 37-V. The LM317Mis exceptionally easyto use and Internal Short-Circuit Current Limiting requires only two external resistorsto set the output.
Furthermore, both line and load regulation are better• Thermal-Overload Protection than standard fixed regulators.• Output Safe-Area Compensation additionto having higher performance than fixed• Q Devices Meet Automotive Performance regulators, the LM317M includes on-chip currentRequirements limiting, thermal-overload protection, and safe-• Customer-Specific Configuration Control Can Be operating-area protection. All overload protectionSupportedfor remains fully functionalif the ADJUST terminalisMajor-Change disconnected.
The LM317isa floating regulator meaning thereisno
2 Applications device ground terminal. Quiescent current flowsto Electronic Point-of-Sales the load insteadof being wasted flowingto ground.
Regulated output voltage of hundreds of voltsis• Medical/Health/Fitness possibleif the maximum inputto output differential• Printers does not exceed 40-Vat any time. Device can be• Appliances/White used asa floating current source controlled bya
single resistor.• TV/Set-Top Box
Normally,no capacitors are needed unless the device more than six inches from the input filter
capacitors,in which case an input bypass capacitor any typeis needed. An optional electrolytic or
tantalum output capacitor can be addedto improve
transient response. Ceramic output capacitors canbe
used but output ringing maybe present on transients.
The ADJUST terminal canbe bypassed with any type capacitor to achieve high ripple-rejection ratios,
which are difficultto achieve with standard three-
terminal regulators.
Device Information
