STMicroelectronics LDK220C40R
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.88 | $0.88 |
| 15+ | $0.58 | $8.70 |
| 25+ | $0.57 | $14.25 |
| 50+ | $0.54 | $27.00 |
| 100+ | $0.47 | $47.00 |
| N+ | $0.09 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | |
| Packaging | Cut Tape (CT) | |
| Output Configuration | Active |
| Output Type | Positive |
| Number of Regulators | Fixed |
| Voltage - Input (Max) | 13.2V |
| Voltage - Output (Min/Fixed) | 4V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.35V @ 200mA |
| Current - Output | 200mA |
| Current - Quiescent (Iq) | 90 μA |
| Current - Supply (Max) | 100 μA |
| PSRR | 55dB ~ 50dB (120Hz ~ 10kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 5-TSSOP, SC-70-5, SOT-353 |
| Supplier Device Package | SOT-323-5 |
| ROHS |  |
The LDK220C40R from STMicroelectronics is a fixed 4V low dropout linear regulator capable of delivering 200mA. It features a low dropout voltage of 0.35V at full load and a quiescent current of 90 μA. With PSRR of 55dB to 50dB across 120Hz to 10kHz, it provides clean, stable power for noise-sensitive applications. The compact SOT-323-5 package is ideal for space-constrained designs.
- Clean Power: PSRR of 55dB at 120Hz reduces ripple for sensitive electronics.
- High Efficiency: Low 0.35V dropout at 200mA minimizes power loss.
- Compact Footprint: SOT-323-5 package fits tight PCB layouts.
- Stable 4V Rail: Fixed output ensures consistent performance.
Noise-Sensitive Audio Circuits
With PSRR of 55dB at 120Hz, the LDK220C40R effectively filters mains hum, making it ideal for audio preamplifiers and DACs.
Automotive Infotainment
The 200mA output and stable 4V rail support infotainment processors, while the PSRR helps reject alternator noise.
Industrial Sensors
Reliable 4V output with low dropout ensures consistent operation in industrial sensor modules that experience voltage fluctuations.
Portable Instruments
The SOT-323-5 package and 90 μA quiescent current make it suitable for handheld meters and test equipment.
Communication Modules
For RF modules, the PSRR up to 10kHz helps maintain clean power, reducing interference in signal transmission.
Battery Management Systems
Provides a stable 4V reference for monitoring circuits, with low dropout to maximize usable battery capacity.
- Q: What is the output voltage of the LDK220C40R?
- A: The output type is Fixed, and the input voltage is 4V, indicating a 4V output.
- Q: What is the maximum output current?
- A: The maximum output current is 200mA.
- Q: What is the input voltage range?
- A: The specified input voltage is 4V; the full range is not provided in the technical data.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.35V at 200mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 90 μA.
- Q: What is the PSRR performance?
- A: PSRR is 55dB to 50dB from 120Hz to 10kHz.
LDK220C40R.pdf
- Q: What is the output voltage of the LDK220C40R?
- A: The output type is Fixed, and the input voltage is 4V, indicating a 4V output.
- Q: What is the maximum output current?
- A: The maximum output current is 200mA.
- Q: What is the input voltage range?
- A: The specified input voltage is 4V; the full range is not provided in the technical data.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.35V at 200mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 90 μA.
- Q: What is the PSRR performance?
- A: PSRR is 55dB to 50dB from 120Hz to 10kHz.
