STMicroelectronics LDK320ADU30R Linear Voltage Regulator
- Brand: STMicroelectronics
- Product Code: LDK320ADU30R
- Availability: In Stock
$0.15
- Ex Tax: $0.15
Advanced Power Management Solution: LDK320ADU30R Linear Regulator
Engineered for precision and reliability, the LDK320ADU30R linear voltage regulator from STMicroelectronics represents the cutting-edge of low-dropout regulator technology. This SOT-89 packaged device combines exceptional electrical performance with robust protection features, making it an ideal choice for demanding applications in industrial automation, IoT devices, and portable electronics. With its fixed 3V output and 200mA current capability, this regulator delivers stable power solutions where space constraints and efficiency matter most.
Technical Excellence in Voltage Regulation
The LDK320ADU30R demonstrates superior technical specifications that set it apart in the competitive landscape of linear regulators. Operating with a maximum input voltage of 18V, this device maintains a consistent 3V output through its advanced voltage reference system. The ultra-low dropout voltage of 0.35V at 200mA load current ensures minimal power dissipation while maintaining regulation under varying conditions. Its impressive 88dB PSRR (Power Supply Rejection Ratio) from 120Hz to 10kHz provides exceptional noise rejection, making it suitable for sensitive analog circuits and RF applications.
| Parameter | Specification |
|---|---|
| Output Voltage | Fixed 3V |
| Output Current | 200mA Max |
| Dropout Voltage | 0.35V @ 200mA |
| PSRR | 88dB ~ 48dB |
| Operating Temp | -40°C to 125°C |
Comprehensive Protection Architecture
Built-in safety mechanisms ensure long-term reliability in challenging environments. The integrated over-temperature protection automatically reduces output current when thermal limits are approached, while the over-current protection safeguards against short circuits and excessive loads. These features make the LDK320ADU30R exceptionally durable in industrial settings where voltage spikes and thermal stress are common challenges. The device's surface-mount TO-243AA package further enhances thermal management through optimized PCB layout possibilities.
For design engineers seeking space-saving solutions, the SOT-89 package offers significant advantages. Its compact footprint combined with high performance enables miniaturization of power management circuits without compromising reliability. The device's quiescent current of just 90µA (maximum 100µA supply current) makes it particularly suitable for battery-powered applications where energy efficiency is critical.
Design Flexibility and Application Scope
The LDK320ADU30R's versatility extends across multiple industries, from automotive electronics to medical devices. Its fixed output configuration simplifies design while maintaining precision, eliminating the need for external feedback resistors. The regulator's stability with ceramic capacitors further reduces BOM costs and board space requirements. Typical applications include powering microcontrollers, sensors, and RF modules in smart meters, wearable devices, and industrial control systems.
When compared to alternative solutions in its class, the LDK320ADU30R stands out through its combination of high PSRR, low dropout voltage, and comprehensive protection features. This makes it particularly valuable in applications requiring clean power delivery with minimal ripple and noise. The device's ability to maintain regulation under varying load conditions ensures consistent performance in dynamic operating environments.
Tags: Power Management ICs, Surface Mount Regulators, Industrial Electronics, Voltage Regulation, Compact Power Solutions