TAEJIN LM2940HS-3.3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.33 | $1.33 |
| 15+ | $0.30 | $4.50 |
| 25+ | $0.30 | $7.50 |
| 50+ | $0.28 | $14.00 |
| 100+ | $0.25 | $25.00 |
| N+ | $0.05 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | TAEJIN |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 26V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.7V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 500 µA |
| Current - Supply (Max) | 20 mA |
| PSRR | 72dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-261-4, TO-261AA |
| Supplier Device Package | SOT-223-3L |
| ROHS |  |
The LM2940HS-3.3 from TAEJIN is a low dropout positive voltage regulator offering a fixed 3.3V output. It is capable of delivering up to 1A of load current with a dropout voltage of just 0.7V. Housed in a surface-mount SOT-223-3L package, it features a quiescent current of 500 µA and is well-suited for battery-powered and post-regulation applications.
- Low Dropout: 0.7V dropout at 1A maximizes headroom in battery applications.
- High Current: 1A output supports processors and multiple peripherals.
- Surface-Mount Package: SOT-223-3L is suitable for automated assembly.
- Good Ripple Rejection: 72dB PSRR at 120Hz effectively filters mains ripple.
Post-Regulation for Switching Supplies
The low dropout of 0.7V allows efficient post-regulation of a 5V rail to a clean 3.3V for digital logic.
Battery-Powered Equipment
With 500 µA quiescent current and 1A capability, it balances standby efficiency with high-load performance.
Microcontroller Power Supply
Provides a stable 3.3V rail for MCUs, sensors, and peripherals in embedded systems.
Networking Equipment
Ideal for routers and switches requiring a reliable 3.3V supply for PHY and switch ICs.
Consumer Electronics
Used in set-top boxes and gaming peripherals to generate a clean 3.3V logic supply.
- Q: What is the output voltage of the LM2940HS-3.3?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: The maximum output current is 1A.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; the voltage_input field indicates 3.3V, which is the output voltage.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.7V at a 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is 500 µA.
- Q: What package is available?
- A: It is available in the SOT-223-3L package.
LM2940HS-3.3.pdf
- Q: What is the output voltage of the LM2940HS-3.3?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: The maximum output current is 1A.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; the voltage_input field indicates 3.3V, which is the output voltage.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.7V at a 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is 500 µA.
- Q: What package is available?
- A: It is available in the SOT-223-3L package.
