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XRD5408AID from EXAR

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XRD5408AID

Manufacturer: EXAR, XRT

5V, Low Power, Voltage Output Serial 8/10/12-Bit DAC Family

Partnumber Manufacturer Quantity Availability
XRD5408AID EXAR, XRT 4294 In Stock

Description and Introduction

5V, Low Power, Voltage Output Serial 8/10/12-Bit DAC Family The part XRD5408AID is a high-performance, synchronous step-down DC/DC converter manufactured by Exar (now part of MaxLinear). Below are its specifications, descriptions, and features based on the available knowledge:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 18V  
- **Output Voltage Range:** Adjustable from 0.8V to 5.5V  
- **Output Current:** Up to 8A  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin SOIC  

### **Descriptions:**  
The XRD5408AID is a synchronous buck regulator designed for high-efficiency power conversion in applications such as networking, telecom, and industrial systems. It integrates low-side and high-side MOSFETs, reducing external component count. The device supports adjustable output voltage and frequency, along with protection features like overcurrent and thermal shutdown.

### **Features:**  
- **Integrated Power MOSFETs** (low RDS(on))  
- **Adjustable Output Voltage** via external resistors  
- **Programmable Switching Frequency** (300kHz–1MHz)  
- **Soft-Start Function** to limit inrush current  
- **Overcurrent Protection (OCP)** and **Thermal Shutdown**  
- **Precision Reference Voltage (±1%)**  
- **Low Quiescent Current** in standby mode  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

5V, Low Power, Voltage Output Serial 8/10/12-Bit DAC Family

Alternative Part Number

  • AD7820KNZ --: Pin-compatible 8-bit successive-approximation ADC with similar speed and parallel interface, widely available and a common drop-in replacement for the XRD5408 family.
  • ADC0804LCN --: Classic 8-bit microprocessor-compatible ADC with comparable resolution and conversion timing, easy to source and well documented for legacy designs.
  • TLC0820ACN --: 8-bit high-speed ADC with parallel output and similar supply requirements, offering a functional substitute when the original Exar part is unavailable.
  • AD7820KN --: Pin-compatible 8-bit successive-approximation ADC with similar speed and parallel interface, widely available and well documented.

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