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L6911ETR from ST,ST Microelectronics

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L6911ETR

Manufacturer: ST

5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION

Partnumber Manufacturer Quantity Availability
L6911ETR ST 5000 In Stock

Description and Introduction

5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION The part **L6911ETR** is manufactured by **STMicroelectronics**.  

### **Specifications:**  
- **Type:** Synchronous Buck Controller  
- **Input Voltage Range:** 4.5V to 36V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Output Current:** Up to 25A (with external MOSFETs)  
- **Efficiency:** High efficiency due to synchronous rectification  
- **Protection Features:** Overcurrent protection (OCP), undervoltage lockout (UVLO), thermal shutdown  
- **Package:** PowerSO-8 (Exposed Pad)  

### **Descriptions and Features:**  
- Designed for high-performance DC-DC step-down applications.  
- Supports **voltage-mode control** with adjustable soft-start.  
- **Synchronous rectification** improves efficiency by reducing power dissipation.  
- **Adjustable switching frequency** allows optimization for size and efficiency.  
- **External compensation** for flexible loop stability tuning.  
- **Low standby current** for power-saving applications.  
- Suitable for **industrial, automotive, and computing** power supplies.  

This information is based on the manufacturer's datasheet for the L6911ETR.

Application Scenarios & Design Considerations

5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION

Alternative Part Number

  • ISL6520ACBZ --: Single synchronous buck PWM controller with similar function and voltage-mode control, suitable drop-in for many L6911 applications.
  • TPS5430DDA --: Widely used step-down converter with integrated switch, easy replacement in power supply designs requiring similar input range.
  • LM2675M-ADJ --: Simple switcher buck regulator with adjustable output, common alternative when L6911 controller-based design is reworked.

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