LM3670MFX-2.5 National Semiconductor, LM3670MFX-2.5 Datasheet - Page 2

• Manufacturer Part Number: LM3670MFX-2.5
• Description: Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
• Manufacturer: National Semiconductor

www.national.com
Typical Application
Connection Diagram and Package Mark Information
Note: The actual physical placement of the package marking will vary from part to part.
Pin Descriptions
Pin #
1
2
3
4
5
FIGURE 2. 1.2V - Adjustable Output Voltage - Typical Application Circuit
Name
GND
SW
V
EN
FB
IN
(Continued)
Description
Power supply input. Connect to the input filter capacitor (Figure 1).
Ground pin.
Enable input.
Feedback analog input. Connect to the output filter capacitor (Figure 1).
Switching node connection to the internal PFET switch and NFET synchronous
rectifier. Connect to an inductor with a saturation current rating that exceeds the
750 mA max. Switch Peak Current Limit specification.
NS Package Number XXXX
FIGURE 3. Top View
SOT23-5 Package
2
20075802
20075830