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LM2681M6X from NATIONAL,National Semiconductor

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LM2681M6X

Manufacturer: NATIONAL, NSC, NSC, NS国半, NS

Switched Capacitor Voltage Converter

Partnumber Manufacturer Quantity Availability
LM2681M6X NATIONAL, NSC, NSC, NS国半, NS 36867 In Stock

Description and Introduction

Switched Capacitor Voltage Converter The LM2681M6X is a switched capacitor voltage converter manufactured by National Semiconductor (NSC). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Options:** +5V (fixed) or adjustable (via external resistors)  
- **Output Current:** Up to 50mA  
- **Switching Frequency:** 160kHz (typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOT-23-6  

### **Descriptions:**  
- The LM2681M6X is a charge pump DC-DC converter that generates a regulated output voltage from an input supply.  
- It eliminates the need for inductors, making it suitable for space-constrained applications.  
- The device includes an internal oscillator and feedback control for stable output regulation.  

### **Features:**  
- **No Inductors Required** – Uses only external capacitors for operation.  
- **Low Quiescent Current:** 120µA (typical)  
- **Shutdown Mode:** Reduces current consumption to <1µA when disabled.  
- **Short-Circuit Protection** – Built-in protection against output shorts.  
- **Adjustable Output** – Can be configured for voltages other than +5V using external resistors.  

This information is based solely on the manufacturer's datasheet for the LM2681M6X.

Application Scenarios & Design Considerations

Switched Capacitor Voltage Converter

Alternative Part Number

  • TPS60500DGSR --: Charge-pump voltage converter in the same function class as the LM2681, widely available and well documented.
  • MAX1682EUK+T --: Switched-capacitor voltage converter offering similar regulation behavior and a compact SOT-23 package.
  • LTC1515CS8-3.3 --: Regulated charge-pump converter with comparable input range and output capability, suitable as a functional substitute.
  • LTC1515CS8-3.3#PBF --: Regulated charge-pump converter with comparable input range and output capability, suitable as a functional replacement.

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