National Semiconductor LM3370SD-3621
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $3.48 | $3.48 |
| 15+ | $0.80 | $12.00 |
| 25+ | $0.78 | $19.50 |
| 50+ | $0.74 | $37.00 |
| 100+ | $0.65 | $65.00 |
| N+ | $0.13 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 2 |
| Voltage - Input (Min) | 2.7V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.5V, 3.3V |
| Voltage - Output (Max) | - |
| Current - Output | 600mA |
| Frequency - Switching | 2MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -30°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 16-WFDFN Exposed Pad |
| Supplier Device Package | 16-WSON (5x4) |
| ROHS |  |
The LM3370SD-3621 from National Semiconductor is a dual-output synchronous Buck DC-DC converter designed for battery-powered portable electronics. It operates from an input voltage of 2.7V to 5.5V and provides two fixed outputs: 1.5V and 3.3V, each capable of delivering up to 600mA. The 2MHz switching frequency allows for small external components, making it ideal for space-constrained designs. This converter is well-suited for smartphones, tablets, and other handheld devices requiring multiple regulated voltage rails.
- Dual Outputs: Provides two independent regulated rails (1.5V and 3.3V) from a single input.
- Compact Design: 2MHz switching frequency enables tiny inductors and capacitors.
- High Efficiency: Synchronous rectification extends battery life in portable devices.
- Wide Input Range: 2.7V to 5.5V covers single-cell Li-ion and 3-cell alkaline applications.
Smartphones and Tablets
Provides two regulated rails (1.5V for core logic, 3.3V for I/O) from a single Li-ion battery, with 2MHz switching to minimize inductor size.
Portable Media Players
Power the application processor and memory from a 3.7V battery, with the dual outputs simplifying power sequencing.
Wireless Modules
Supply 1.5V for the baseband processor and 3.3V for the RF front-end, ensuring clean, stable power for sensitive RF circuits.
Handheld GPS Devices
Regulate battery voltage to 1.5V for the GPS chipset and 3.3V for the display and user interface.
Digital Cameras
Power the image sensor (1.5V) and the main processor (3.3V) from a 2-cell battery pack, with high efficiency for longer shooting time.
Portable Gaming Consoles
Dual outputs support the CPU core and graphics processor, with the 600mA per channel handling moderate loads.
- Q: What type of converter is the LM3370SD-3621?
- A: It is a dual-output synchronous Buck (step-down) DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.7V to 5.5V.
- Q: What are the output voltages?
- A: It provides fixed outputs of 1.5V and 3.3V.
- Q: What is the maximum output current per channel?
- A: Each channel can deliver up to 600mA.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 2MHz.
- Q: What package is available?
- A: It comes in a 16-WFDFN Exposed Pad package.
LM3370SD-3621.pdf
- Q: What type of converter is the LM3370SD-3621?
- A: It is a dual-output synchronous Buck (step-down) DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.7V to 5.5V.
- Q: What are the output voltages?
- A: It provides fixed outputs of 1.5V and 3.3V.
- Q: What is the maximum output current per channel?
- A: Each channel can deliver up to 600mA.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 2MHz.
- Q: What package is available?
- A: It comes in a 16-WFDFN Exposed Pad package.
