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LM27213SQ from NS,National Semiconductor

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LM27213SQ

Manufacturer: NS, NS,NS

Single Phase Hysteretic Buck Controller
Partnumber Manufacturer Quantity Availability
LM27213SQ NS, NS,NS 4575 In Stock

Description and Introduction

Single Phase Hysteretic Buck Controller The LM27213SQ is a high-efficiency, synchronous step-down DC-DC converter manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 20V  
- **Output Voltage Range:** 0.6V to 5.5V (adjustable via external resistors)  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 300kHz to 1.5MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin LLP (Leadless Leadframe Package)  
- **Protection Features:** Overcurrent, Overtemperature, and Undervoltage Lockout (UVLO)  

### **Descriptions:**  
The LM27213SQ integrates high-side and low-side MOSFETs, reducing external component count. It is designed for high-efficiency power conversion in applications such as point-of-load (POL) supplies, networking, and industrial systems.  

### **Features:**  
- **Integrated Power MOSFETs** (High-side and Low-side)  
- **Adjustable Output Voltage**  
- **Adjustable Switching Frequency**  
- **Synchronous Rectification** for improved efficiency  
- **Soft-Start Function** to limit inrush current  
- **Power Good Indicator**  
- **Thermal Shutdown Protection**  

This device is optimized for high-performance power management in compact designs.

Application Scenarios & Design Considerations

Single Phase Hysteretic Buck Controller

Alternative Part Number

  • ISL6262CRZ --: Single-phase buck controller for CPU/GPU VRMs with similar PWM control function and comparable package, a common cross for LM27213 designs.
  • TPS51620RHBR --: Dual-phase synchronous buck controller with integrated drivers, functionally similar to LM27213 and widely available as a drop-in style replacement.
  • NCP5386BMNR2G --: Multi-phase buck controller offering comparable voltage regulation features and a different series name, suitable as a second-source option.
  • TPS51513PWPR --: Single-phase synchronous buck controller suitable for similar VRM applications with comparable control features.
  • NCP5386MNR2G --: Multi-phase buck controller offering similar CPU power regulation capability as a functional replacement.

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