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L6920DBTR from STM,ST Microelectronics

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L6920DBTR

Manufacturer: STM, ST

Synchronous rectifier step up converter

Partnumber Manufacturer Quantity Availability
L6920DBTR STM, ST 23767 In Stock

Description and Introduction

Synchronous rectifier step up converter The L6920DBTR is a synchronous step-down DC-DC converter manufactured by STMicroelectronics (STM). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.6V to VIN  
- **Output Current:** Up to 1.2A  
- **Switching Frequency:** 1.5MHz (typical)  
- **Efficiency:** Up to 95%  
- **Quiescent Current:** 30µA (typical) in PFM mode  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** DFN8 (3x3mm)  

### **Descriptions:**  
- The L6920DBTR is a high-efficiency, synchronous step-down DC-DC converter optimized for battery-powered applications.  
- It integrates low RDS(on) power MOSFETs to minimize power loss.  
- Operates in PWM (Pulse Width Modulation) mode for high load conditions and automatically switches to PFM (Pulse Frequency Modulation) mode for light loads to improve efficiency.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency by reducing conduction losses.  
- **100% Duty Cycle Operation:** Allows VOUT to follow VIN when input voltage drops close to the output voltage.  
- **Soft-Start:** Prevents inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation when input voltage is too low.  
- **Overcurrent Protection (OCP):** Safeguards the device from excessive current.  
- **Thermal Shutdown:** Protects the IC from overheating.  

This information is based on the manufacturer's datasheet. For detailed technical specifications, refer to the official STMicroelectronics documentation.

Application Scenarios & Design Considerations

Synchronous rectifier step up converter

Alternative Part Number

  • TPS61070DDCR --: Boost converter with integrated switch in SOT-23-6, similar input voltage range and output current, pin-compatible enough for many L6920DBTR designs.
  • NCP1402SN33T1G --: Low-power boost regulator in SOT-23-5 with fixed 3.3V output, suitable replacement for small step-up converter applications.
  • MCP1640T-I/CHY --: Compact synchronous boost converter in SOT-23-6 with wide input range and low quiescent current, functionally similar to the L6920DBTR.
  • MIC2290YML-TR --: Low-voltage boost regulator with internal switch, comparable switching frequency and current capability, suitable drop-in for portable boost applications.
  • AP3012KTR-G1 --: Step-up DC-DC converter with integrated switch in small package, similar voltage and current ratings, cost-effective alternative for L6920DBTR.

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