lm2577sx-adj

Manufacturer Part Numberlm2577sx-adj
DescriptionSimple Switcher Step-up Voltage Regulator
ManufacturerNational Semiconductor Corporation
lm2577sx-adj datasheet
 


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Electrical Characteristics—LM1577-ADJ, LM2577-ADJ
Note 8: Junction to ambient thermal resistance with approximately 1 square inch of pc board copper surrounding the leads. Additional copper area will lower thermal
resistance further. See thermal model in “Switchers Made Simple” software.
Note 9: If the TO-263 package is used, the thermal resistance can be reduced by increasing the PC board copper area thermally connected to the package. Using
0.5 square inches of copper area, θ
is 50˚C/W; with 1 square inch of copper area, θ
JA
Typical Performance Characteristics
Reference Voltage
vs Temperature
Reference Voltage
vs Temperature
∆ Reference Voltage
vs Supply Voltage
is 37˚C/W; and with 1.6 or more square inches of copper area, θ
JA
01146834
01146836
01146838
9
(Continued)
is 32˚C/W.
JA
Reference Voltage
vs Temperature
01146835
∆ Reference Voltage
vs Supply Voltage
01146837
∆ Reference Voltage
vs Supply Voltage
01146839
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