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SC619 from SC

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SC619

Manufacturer: SC, SEMTECH

Charge Pump Flash LED Driver with Safety Timer

Partnumber Manufacturer Quantity Availability
SC619 SC, SEMTECH 33 In Stock

Description and Introduction

Charge Pump Flash LED Driver with Safety Timer The SC619 is a DC/DC step-down converter manufactured by SEMTECH. Here are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Input Voltage Range:** 4V to 40V  
- **Output Voltage Range:** 0.8V to 24V (adjustable)  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-5 (D2PAK-5)  

### **Descriptions:**  
- The SC619 is a high-efficiency, synchronous buck converter designed for a wide range of applications.  
- It integrates both high-side and low-side MOSFETs, reducing external component count.  
- The device supports adjustable output voltage via an external resistor divider.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 4V to 40V operation.  
- **High Efficiency:** Up to 95% due to synchronous rectification.  
- **Adjustable Output Voltage:** Configurable from 0.8V to 24V.  
- **Integrated MOSFETs:** Reduces external component requirements.  
- **Thermal Shutdown Protection:** Prevents overheating.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Soft-Start Function:** Limits inrush current during startup.  

This information is based solely on SEMTECH's official documentation for the SC619.

Application Scenarios & Design Considerations

Charge Pump Flash LED Driver with Safety Timer

Alternative Part Number

  • 1N4148 --: Widely available general-purpose small-signal diode often used as a substitute in similar low-current switching and signal applications.
  • 1N4007 --: Common rectifier diode with high voltage rating, suitable for general-purpose rectification where the original SC619 is used in power paths.
  • BAT54 --: Schottky small-signal diode offering fast switching and low forward drop, a practical alternative for signal and clamping circuits.
  • SM712 --: Same manufacturer's TVS diode array family for RS-485 protection, similar asymmetric clamping and package options, often used as a drop-in substitute.
  • PESD2CAN --: Dual-line ESD protection diode with comparable working voltage and low capacitance, suitable for CAN/RS-485 bus protection.
  • SP724 --: TVS diode array offering similar transient suppression for communication interfaces, widely available alternative from a different series.

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