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ST1S03PMR from ST,ST Microelectronics

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ST1S03PMR

Manufacturer: ST

1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN DFN6

Partnumber Manufacturer Quantity Availability
ST1S03PMR ST 30645 In Stock

Description and Introduction

1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN DFN6 The ST1S03PMR is a step-down DC-DC converter manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 3.3V to 16V  
- **Output Voltage:** Adjustable from 0.8V to 12V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 1.5MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** DFN6 (3x3 mm)  

### **Descriptions:**
- The ST1S03PMR is a monolithic synchronous step-down regulator with integrated power switches.  
- It is designed for high efficiency and compact power supply solutions in portable and industrial applications.  
- The device operates at a fixed high frequency, allowing the use of small external components.  

### **Features:**
- **Integrated Power MOSFETs:** Reduces external component count.  
- **PWM/PFM Mode Operation:** Improves efficiency at light loads.  
- **Internal Soft-Start:** Limits inrush current during startup.  
- **Over-Temperature Protection (OTP):** Safeguards the device from overheating.  
- **Short-Circuit Protection:** Enhances system reliability.  
- **Low Quiescent Current:** Improves efficiency in standby mode.  
- **Synchronous Rectification:** Increases efficiency compared to diode-based solutions.  

This information is sourced from STMicroelectronics' official documentation.

Application Scenarios & Design Considerations

1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN DFN6

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