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MC33349N-3R1 from MOTO,Motorola

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MC33349N-3R1

Manufacturer: MOTO, ON

Lithium Battery Protection Circuit for One Cell Battery Packs

Partnumber Manufacturer Quantity Availability
MC33349N-3R1,MC33349N3R1 MOTO, ON 216000 In Stock

Description and Introduction

Lithium Battery Protection Circuit for One Cell Battery Packs The MC33349N-3R1 is a voltage regulator manufactured by ON Semiconductor. Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Voltage:** 3.1V (fixed)  
- **Output Current:** Up to 50mA  
- **Dropout Voltage:** Typically 0.5V at 50mA  
- **Quiescent Current:** Typically 1.5mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** TO-92 (3-pin)  

### **Descriptions:**  
- The MC33349N-3R1 is a low-dropout (LDO) linear voltage regulator designed for low-power applications.  
- It provides a fixed 3.1V output with stable performance over varying input voltages.  
- Suitable for battery-powered devices, automotive systems, and industrial controls.  

### **Features:**  
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **Thermal Shutdown Protection:** Prevents damage due to overheating.  
- **Short-Circuit Protection:** Safeguards the regulator from output short circuits.  
- **Wide Input Voltage Range:** Supports operation from 4.5V up to 40V.  
- **Low Quiescent Current:** Reduces power consumption in standby mode.  

This information is based on ON Semiconductor's datasheet for the MC33349N-3R1.

Application Scenarios & Design Considerations

Lithium Battery Protection Circuit for One Cell Battery Packs

Alternative Part Number

  • DS1233-3R1 --: 3.3V reset supervisor with similar reset threshold and open-drain output, functionally equivalent to the MC33349N-3R1.
  • MCP130-315DI/TO --: 3.15V voltage supervisor in TO-92 package with active-low reset, close match in threshold and function.
  • TL7705ACP --: Widely available 5V/3.3V supply voltage supervisor with adjustable threshold and reset output, suitable replacement with different series naming.
  • MAX6315US31D3+T --: Supervisory/reset IC with 3.1V threshold in SOT-143, functionally similar to the MC33349N-3R1 reset supervisor and widely available.
  • TPS3808G30DBVR --: Low-power voltage supervisor with 3.0V threshold and programmable delay in SOT-23-6, a common drop-in style replacement for 3.1V reset supervisors.
  • MCP1316T-30DI/TO --: 3.0V reset supervisor with active-low open-drain output in TO-92/SOT-23, offering comparable reset threshold and low quiescent current.

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