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MAX8538 from MAXIM,MAXIM - Dallas Semiconductor

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MAX8538

Manufacturer: MAXIM

Dual-Synchronous Buck Controllers for Point-of-Load, Tracking, and DDR Memory Power Supplies

Partnumber Manufacturer Quantity Availability
MAX8538 MAXIM 82 In Stock

Description and Introduction

Dual-Synchronous Buck Controllers for Point-of-Load, Tracking, and DDR Memory Power Supplies The MAX8538 is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin µMAX®  

### **Descriptions:**  
The MAX8538 is a synchronous step-down DC-DC converter optimized for high efficiency and compact size. It integrates both high-side and low-side MOSFETs, reducing external component count. The device operates at a fixed 1MHz switching frequency, allowing the use of small inductors and capacitors. It is suitable for portable applications requiring high efficiency and small PCB footprint.

### **Features:**  
- **Integrated Synchronous Rectifier:** Improves efficiency by eliminating the need for an external Schottky diode.  
- **Low Dropout Operation:** Maintains regulation even when the input voltage approaches the output voltage.  
- **Pulse-Width Modulation (PWM) Mode:** Ensures stable operation under varying load conditions.  
- **Soft-Start:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Prevents operation when input voltage is too low.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Short-Circuit Protection:** Safeguards against output faults.  

This information is based solely on the manufacturer's datasheet for the MAX8538.

Application Scenarios & Design Considerations

Dual-Synchronous Buck Controllers for Point-of-Load, Tracking, and DDR Memory Power Supplies

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