National Semiconductor LM3370SD-4221/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.04 | $4.04 |
| 15+ | $0.93 | $13.95 |
| 25+ | $0.91 | $22.75 |
| 50+ | $0.86 | $43.00 |
| 100+ | $0.76 | $76.00 |
| N+ | $0.15 | 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) | 1.8V, 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-4221 is a high-efficiency dual-output Buck converter from National Semiconductor. It operates from a 2.7V to 5.5V input, delivering fixed 1.8V and 3.3V rails at up to 600mA per channel. With a 2MHz switching frequency, it enables the use of tiny external components, making it ideal for space-constrained portable electronics. Its synchronous architecture ensures excellent efficiency across load ranges, extending battery life in smartphones, wearables, and IoT devices.
- Dual Outputs: Provides two regulated rails (1.8V and 3.3V) from a single IC, simplifying power supply design.
- High Efficiency: Synchronous rectification maximizes efficiency, reducing heat and extending battery life.
- Compact Solution: 2MHz switching frequency allows for small inductors and capacitors, minimizing PCB footprint.
- Wide Input Range: Accepts 2.7V to 5.5V, compatible with Li-Ion and Li-Poly batteries.
Battery-Powered Portable Devices
Ideal for smartphones and tablets where dual-rail power (1.8V and 3.3V) is needed. The 2MHz switching frequency allows for small external inductors, saving board space.
Wireless Connectivity Modules
Provides clean, stable rails for Wi-Fi and Bluetooth modules. The high frequency reduces output ripple, improving RF performance.
Portable Medical Devices
With a 2.7V to 5.5V input range, it efficiently powers sensors and microcontrollers from a single Li-Ion cell, extending battery life.
Digital Cameras and Imaging
Supplies separate analog and digital voltage rails, minimizing noise coupling and ensuring high-quality image processing.
Handheld Gaming Consoles
Delivers efficient power conversion for both logic and I/O circuits, maintaining performance during intensive gaming sessions.
IoT Edge Nodes
Compact and efficient, it is perfect for always-on sensors that require multiple voltage domains from a small battery.
- Q: What type of converter is the LM3370SD-4221?
- A: It is a dual-output Buck (step-down) DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is 2.7V to 5.5V.
- Q: What output voltages does it provide?
- A: It provides fixed outputs of 1.8V and 3.3V.
- Q: What is the maximum output current?
- A: The maximum output current is 600mA per channel.
- Q: What is the switching frequency?
- A: The switching frequency is 2MHz.
- Q: What package is available?
- A: It comes in a 16-WFDFN Exposed Pad package.
LM3370SD-4221/NOPB.pdf
- Q: What type of converter is the LM3370SD-4221?
- A: It is a dual-output Buck (step-down) DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is 2.7V to 5.5V.
- Q: What output voltages does it provide?
- A: It provides fixed outputs of 1.8V and 3.3V.
- Q: What is the maximum output current?
- A: The maximum output current is 600mA per channel.
- Q: What is the switching frequency?
- A: The switching frequency is 2MHz.
- Q: What package is available?
- A: It comes in a 16-WFDFN Exposed Pad package.
