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MAX1937EEI from MAX,MAXIM - Dallas Semiconductor

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MAX1937EEI

Manufacturer: MAX, MAXIM

Two-Phase Desktop CPU Core Supply Controllers with Controlled VID Change
Partnumber Manufacturer Quantity Availability
MAX1937EEI MAX, MAXIM 3019 In Stock

Description and Introduction

Two-Phase Desktop CPU Core Supply Controllers with Controlled VID Change The MAX1937EEI 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:** 4.5V to 28V  
- **Output Voltage Range:** 1.25V to 5.5V (adjustable)  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 500kHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin SSOP (Shrink Small Outline Package)  

### **Descriptions:**  
- The MAX1937EEI is a synchronous step-down DC-DC converter optimized for high efficiency and compact designs.  
- It integrates both high-side and low-side MOSFETs to minimize external component count.  
- The device operates in pulse-width modulation (PWM) mode for stable output regulation.  
- It includes overcurrent and thermal shutdown protection for enhanced reliability.  

### **Features:**  
- **Integrated Power MOSFETs** – Reduces external component requirements.  
- **Adjustable Output Voltage** – Set via an external resistor divider.  
- **Low Quiescent Current** – Improves efficiency at light loads.  
- **Soft-Start Function** – Limits inrush current during startup.  
- **Thermal Shutdown Protection** – Prevents damage from overheating.  
- **Overcurrent Protection** – Safeguards against excessive load conditions.  

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

Application Scenarios & Design Considerations

Two-Phase Desktop CPU Core Supply Controllers with Controlled VID Change

Alternative Part Number

  • LTC3736EGN --: Dual synchronous step-down controller in a similar QSOP package with comparable input range and current-mode control, suitable as a functional substitute for the MAX1937 dual regulator.
  • ISL6522CBZ --: Single/dual-channel PWM controller with similar supply voltage and gate-drive capability, widely used as a drop-in style alternative for MAX-series notebook power controllers.
  • TPS51124RGER --: Dual synchronous buck controller with integrated drivers and comparable operating voltage, offering similar functionality in a small QFN package for space-constrained designs.
  • ISL6262CRZ --: Two-phase CPU core voltage regulator controller with similar functionality and pin-compatible QSOP package, widely used as a MAX1937 replacement in notebook CPU VRM designs.
  • TPS51511PWP --: Single-phase synchronous buck controller for CPU core supplies with comparable voltage-mode control and current-limit features, suitable for similar notebook VRM applications.
  • NCP5381MNR2G --: Multi-phase buck controller for CPU core power with similar VID-based regulation and protection features, offering a viable alternative where layout can be adapted.

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