551011367-061 National Semiconductor, 551011367-061 Datasheet - Page 9

• Manufacturer Part Number: 551011367-061
• Description: BOARD WEBENCH LM2577,LM2585/87
• Manufacturer: National Semiconductor
• Series: WEBENCH® Buildit Boardr

Specifications of 551011367-061

• Main Purpose: DC/DC, Step Up
• Regulator Topology: Boost
• Board Type: Bare (Unpopulated)
• Utilized Ic / Part: LM2577, LM2585, LM2587
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Current - Output: -
• Voltage - Output: -
• Voltage - Input: -
• Power - Output: -
• Frequency - Switching: -
• Outputs And Type: -
• Other names: *551011367-061; 551011367-061

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
Typical Performance Characteristics
∆ Reference Voltage
Reference Voltage
Reference Voltage
vs Supply Voltage
vs Temperature
vs Temperature
JA
is 50˚C/W; with 1 square inch of copper area, θ
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JA
is 37˚C/W; and with 1.6 or more square inches of copper area, θ
∆ Reference Voltage
∆ Reference Voltage
Reference Voltage
vs Supply Voltage
vs Supply Voltage
vs Temperature
(Continued)
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www.national.com
JA
is 32˚C/W.