In today's power-sensitive electronics landscape, the demand for efficient, low-dropout (LDO) regulators like the TPS76625D from Texas Instruments is surging. This 2.5V fixed-output LDO delivers 250mA with an ultralow 35µA quiescent current, making it ideal for battery-operated devices, IoT sensors, and industrial controls. Its 3% voltage accuracy and 140mV dropout voltage ensure stable performance under varying loads. Read on to discover how this component addresses modern design challenges and outperforms alternatives in critical applications.
Product Overview
The TPS76625D is an SMD LDO regulator in an SOIC-8 package, featuring thermal shutdown and power-good (PG) functionality. Key specifications include:
| Parameter | Value | Source |
|---|---|---|
| Output Voltage | 2.5V (Fixed) | Texas Instruments Datasheet |
| Output Current | 250mA | |
| Dropout Voltage | 140mV (Typ) | |
| Quiescent Current | 35µA (Typ) | |
| Input Voltage Range | 2.7V–10V | |
| Operating Temperature | -40°C to +125°C | |
| Line Regulation | 0.01%/V | |
| Load Regulation | 0.5% | |
| Package | SOIC-8 (3.91mm × 4.9mm) |
Selection Guide
When choosing an LDO regulator, consider these factors:
Dropout Voltage: The TPS76625D’s 140mV dropout minimizes power loss at 250mA.
Quiescent Current: 35µA extends battery life in portable devices.
Stability: Requires only a 4.7µF capacitor for stable operation.
Protections: Thermal shutdown prevents overheating.
Comparison with Similar Models
| Model | Output Voltage | Quiescent Current | Dropout Voltage | Key Advantage |
|---|---|---|---|---|
| TPS76625D | 2.5V | 35µA | 140mV | Ultralow Iq, power-good pin |
| LM2937-2.5 | 2.5V | 10mA | 500mV | Higher current (500mA) |
| MCP1702-2.5 | 2.5V | 2µA | 178mV | Lower Iq, smaller package |
Application Cases
Battery-Powered IoT Sensors: Leverages low Iq for extended operation.
Medical Wearables: Stable 2.5V supply for analog sensors.
Industrial Controls: Operates reliably in -40°C to +125°C environments.
Figure 2: TPS76625D Typical Application (Source: TI)
Market Analysis & Future Trends
Per MarketsandMarkets, the LDO market will grow at 6.2% CAGR through 2027, driven by IoT and portable electronics. The TPS76625D’s ultra-low power profile aligns with energy-efficient design trends.
FAQ
Q1: What’s the minimum input voltage for 2.5V output?
A: 2.7V (per datasheet Section 6.3).
Q2: Can the TPS76625D power an MCU?
A: Yes, it supports 250mA loads typical for microcontrollers.
Q3: Is an external heatsink required?
A: No, the SOIC-8 package dissipates 904mW without additional cooling.
Q4: How does the power-good (PG) pin work?
A: PG goes high when output reaches 92% of nominal voltage (datasheet Section 7.4).
Q5: What’s the typical dropout at 100mA?
A: ~56mV (140mV × 100mA/250mA, linear approximation).
Conclusion
The TPS76625D combines precision, efficiency, and robustness for modern power designs. Its low dropout and quiescent current make it a standout choice for energy-conscious applications. For pricing or technical support, contact [email protected].
