551011367-021 National Semiconductor, 551011367-021 Datasheet - Page 5

• Manufacturer Part Number: 551011367-021
• Description: BOARD WEBENCH BUILD IT LM2599
• Manufacturer: National Semiconductor
• Series: WEBENCH® Buildit Boardr

Specifications of 551011367-021

• Main Purpose: DC/DC, Step Down
• Regulator Topology: Buck
• Board Type: Bare (Unpopulated)
• Utilized Ic / Part: LM2599
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Current - Output: -
• Voltage - Output: -
• Voltage - Input: -
• Power - Output: -
• Frequency - Switching: -
• Outputs And Type: -
• Other names: *551011367-021

All Output Voltage Versions
Electrical Characteristics
Note 8: No diode, inductor or capacitor connected to output pin.
Note 9: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 10: Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ. version, and 15V for the 12V version, to force the output transistor
switch OFF.
Note 11: V
Note 12: Junction to ambient thermal resistance (no external heat sink) for the package mounted TO-220 package mounted vertically, with the leads soldered to
a printed circuit board with (1 oz.) copper area of approximately 1 in
Note 13: Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed circuit board with 0.5 in
Note 14: Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed circuit board with 2.5 in
Note 15: Junction to ambient thermal resistance with the TO-263 package tab soldered to a double sided printed circuit board with 3 in
the LM2599S side of the board, and approximately 16 in
in Switchers Made Simple version 4.2.1 (or later) software.
Typical Performance Characteristics
Normalized
Output Voltage
Switch Saturation
Voltage
Operating
Quiescent Current
IN
= 40V.
DS012582-5
DS012582-8
DS012582-2
(Continued)
2
Line Regulation
Switch Current Limit
Shutdown
Quiescent Current
of copper on the other side of the p-c board. See application hints in this data sheet and the thermal model
2
.
(Circuit of Figure 1 )
5
DS012582-9
DS012582-6
DS012582-3
Efficiency
Dropout Voltage
Minimum Operating
Supply Voltage
2
of (1 oz.) copper area on
2
2
of (1 oz.) copper area.
of (1 oz.) copper area.
www.national.com
DS012582-10
DS012582-4
DS012582-7