STMicroelectronics LDK220M40R
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.05 | $1.05 |
| 15+ | $0.69 | $10.35 |
| 25+ | $0.68 | $17.00 |
| 50+ | $0.64 | $32.00 |
| 100+ | $0.56 | $56.00 |
| N+ | $0.11 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| 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 | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| ROHS |  |
The LDK220M40R from STMicroelectronics is a low dropout linear regulator delivering a fixed 4V output with up to 200mA of current. Its low 90 µA quiescent current and 0.35V dropout voltage make it ideal for battery-operated devices. The SOT-23-5 package is compact for space-limited designs, while the 55dB PSRR ensures clean power for sensitive analog circuits.
- Extended Battery Life: Ultra-low 90 µA quiescent current minimizes standby power draw in portable devices.
- High Efficiency at Low Dropout: 0.35V dropout at 200mA allows operation close to the battery end-of-life voltage.
- Compact Footprint: SOT-23-5 package saves PCB space for miniaturized designs.
- Clean Output: 55dB PSRR at 120Hz rejects mains-frequency ripple for stable analog supplies.
Battery-Powered IoT Sensors
The low 90 µA quiescent current extends battery life in always-on IoT sensor nodes, while the 200mA output can power microcontrollers and wireless transceivers during active periods.
Portable Medical Devices
The stable 4V output and low dropout voltage ensure reliable operation of sensitive analog front-ends in glucose monitors and pulse oximeters, even as the battery discharges.
Wearable Electronics
The compact SOT-23-5 package fits space-constrained wearable designs, and the 55dB PSRR at 120Hz helps reject noise from switching regulators in the power path.
Industrial Sensor Interfaces
Provides a clean 4V rail for industrial pressure or temperature sensors, with the 50dB PSRR at 10kHz filtering high-frequency interference from nearby motors or actuators.
Automotive Infotainment
With a 4V output, it can power audio codecs or display drivers in infotainment systems, offering stable performance across temperature variations.
Reference Voltage for ADCs
The low-noise output and 200mA drive capability make it suitable as a local reference or supply for precision analog-to-digital converters in data acquisition systems.
- Q: What is the output voltage of the LDK220M40R?
- A: The LDK220M40R provides a fixed output voltage of 4V.
- Q: What is the maximum output current?
- A: It can deliver up to 200mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the datasheet for full specifications.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.35V at a 200mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 90 µA, making it suitable for battery-powered applications.
- Q: What package is available?
- A: It comes in a compact SOT-23-5 package.
LDK220M40R.pdf
- Q: What is the output voltage of the LDK220M40R?
- A: The LDK220M40R provides a fixed output voltage of 4V.
- Q: What is the maximum output current?
- A: It can deliver up to 200mA of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the datasheet for full specifications.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.35V at a 200mA load.
- Q: What is the quiescent current?
- A: The quiescent current is a low 90 µA, making it suitable for battery-powered applications.
- Q: What package is available?
- A: It comes in a compact SOT-23-5 package.
