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KA78RM33

Low Dropout Voltage Regulator

Partnumber Manufacturer Quantity Availability
KA78RM33 223 In Stock

Description and Introduction

Low Dropout Voltage Regulator The KA78RM33 is a low-dropout (LDO) voltage regulator manufactured by Fairchild Semiconductor (now part of ON Semiconductor). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** Up to 1A  
- **Dropout Voltage:** Typically 0.5V at 1A load  
- **Input Voltage Range:** Up to 12V  
- **Line Regulation:** 0.04% (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-252 (DPAK)  

### **Descriptions:**
- The KA78RM33 is a positive voltage regulator designed to provide a stable 3.3V output.  
- It includes built-in thermal shutdown, current limit, and short-circuit protection.  
- Suitable for applications requiring a fixed 3.3V supply with minimal external components.  

### **Features:**
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **Thermal Overload Protection:** Shuts down the regulator if excessive temperature is detected.  
- **Short-Circuit Protection:** Safeguards the device against output short circuits.  
- **Wide Input Voltage Range:** Supports a broad range of input voltages.  
- **Stable with Low-ESR Capacitors:** Works reliably with ceramic or tantalum output capacitors.  

This regulator is commonly used in power supplies for consumer electronics, industrial systems, and embedded applications.

Partnumber Manufacturer Quantity Availability
KA78RM33 FAIRCHILD 19 In Stock

Description and Introduction

Low Dropout Voltage Regulator The KA78RM33 is a 3.3V fixed-output voltage regulator manufactured by Fairchild Semiconductor.  

### **Specifications:**  
- **Output Voltage:** 3.3V  
- **Output Current:** Up to 1A  
- **Input Voltage Range:** Up to 30V  
- **Dropout Voltage:** Typically 1.5V at full load  
- **Line Regulation:** 0.04% (Typical)  
- **Load Regulation:** 0.2% (Typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** TO-252 (DPAK)  

### **Descriptions:**  
The KA78RM33 is a positive voltage regulator designed to provide a stable 3.3V output with high efficiency and low dropout voltage. It includes built-in protection features such as overcurrent protection, thermal shutdown, and safe operating area (SOA) protection.  

### **Features:**  
- Fixed 3.3V output  
- High ripple rejection ratio  
- Internal thermal overload protection  
- Short-circuit protection  
- Low standby current  
- Lead-free and RoHS compliant  

This information is based on Fairchild Semiconductor's datasheet for the KA78RM33.

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