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TPS79425DCQR from TI,Texas Instruments

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TPS79425DCQR

Manufacturer: TI

Ultra-Low Noise, High PSRR, Fast RF, High Enable, 250-mA Low Dropout Regulator

Partnumber Manufacturer Quantity Availability
TPS79425DCQR TI 1 In Stock

Description and Introduction

Ultra-Low Noise, High PSRR, Fast RF, High Enable, 250-mA Low Dropout Regulator The TPS79425DCQR is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments (TI). Below are the key specifications, descriptions, and features based on factual information from TI's knowledge base:

### **Specifications:**
- **Output Voltage:** 2.5V (Fixed)  
- **Output Current:** 750mA  
- **Dropout Voltage:** 110mV (Typical at 500mA)  
- **Input Voltage Range:** 2.7V to 6.5V  
- **Accuracy:** ±2% (Over Line, Load, and Temperature)  
- **Quiescent Current:** 85µA (Typical)  
- **PSRR (Power Supply Rejection Ratio):** 65dB (at 1kHz)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-223-5 (DCQ)  

### **Descriptions:**
- The TPS79425DCQR is a high-performance, low-noise LDO regulator designed for applications requiring stable power with minimal voltage fluctuations.  
- It features fast transient response, making it suitable for powering sensitive analog and digital circuits.  
- The device includes built-in protection features such as thermal shutdown and current limiting.  

### **Features:**
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **High PSRR:** Reduces noise and ripple from the input supply.  
- **Low Noise:** Optimized for noise-sensitive applications like RF and precision analog circuits.  
- **Thermal Shutdown & Current Limit:** Protects the device from overheating and overcurrent conditions.  
- **Stable with Ceramic Capacitors:** Requires only a small 1µF ceramic capacitor for stability.  
- **Enable Pin:** Allows for power-saving modes when the regulator is not in use.  

For more detailed technical information, refer to the official **Texas Instruments datasheet** for the TPS79425DCQR.

Application Scenarios & Design Considerations

Ultra-Low Noise, High PSRR, Fast RF, High Enable, 250-mA Low Dropout Regulator

Alternative Part Number

  • LP3985IM5-2.5 --: Low-noise 2.5V LDO in SOT-23-5 with similar dropout and current capability, pin-compatible in function and easy drop-in for many designs.
  • MIC5205-2.5YM5 --: 2.5V fixed LDO in SOT-23-5 with comparable 150mA output and low dropout, widely available and cost-effective alternative.
  • AP2112K-2.5TRG1 --: 2.5V LDO regulator in SOT-23-5 offering similar current rating and low quiescent current, suitable replacement when layout allows.

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