LM3670MF-1.8/NOPB National Semiconductor, LM3670MF-1.8/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM3670MF-1.8/NOPB
• Description: IC CONV DC/DC STEP-DOWN SOT23-5
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Step-Down (Buck)r

Specifications of LM3670MF-1.8/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.8V
• Current - Output: 350mA
• Frequency - Switching: 1MHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• For Use With: LM3670MF-1.8EV - BOARD EVALUATION LM3670MF-1.8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: LM3670MF-1.8; LM3670MF-1.8TR

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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
Name
GND
FIGURE 2. Adjustable Output Voltage - Typical Application Circuit
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 MF05A
FIGURE 3. Top View
SOT23-5 Package
2
20075802
20075830