LM3673TLX-ADJ National Semiconductor Corporation, LM3673TLX-ADJ Datasheet - Page 2

• Manufacturer Part Number: LM3673TLX-ADJ
• Description: 2mhz, 350ma Step-down Dc-dc Converter
• Manufacturer: National Semiconductor Corporation

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Connection Diagram and Package Mark Information
Pin Descriptions (5-Bump MicroSMD)
Pin #
C1
C3
A1
A3
B2
FIGURE 3. 5-Bump MicroSMD Package NS Package Number TLA05CBA
Name
GND
SW
V
EN
FB
IN
FIGURE 2. Typical Application Circuit for ADJ version
Description
Power supply input. Connect to the input filter capacitor (Figure 1).
Ground pin.
Enable pin. The device is in shutdown mode when voltage to this pin is <0.4V and enabled
when >1.0V. Do not leave this pin floating.
Feedback analog input. Connect directly to the output filter capacitor for fixed voltage
versions. For adjustable version external resistor dividers are required (Figure 2). The
internal resistor dividers are disabled for the adjustable version.
Switching node connection to the internal PFET switch and NFET synchronous rectifier.
2
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20183344