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MAX1540ETJ from MAXI,MAXIM - Dallas Semiconductor

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MAX1540ETJ

Manufacturer: MAXI, MAXIM, MAX

Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator
Partnumber Manufacturer Quantity Availability
MAX1540ETJ MAXI, MAXIM, MAX 3613 In Stock

Description and Introduction

Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator The MAX1540ETJ is a power management IC (PMIC) manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (Analog Devices)  
- **Package:** 32-pin TQFN (5x5mm)  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable (via external resistors)  
- **Number of Outputs:** 2 (Buck Regulators)  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The MAX1540ETJ is a **dual-output, step-down (buck) DC-DC converter** designed for high-efficiency power conversion in applications such as networking equipment, industrial systems, and embedded computing. It integrates two synchronous buck regulators with adjustable output voltages and switching frequencies.  

### **Features:**  
- **Dual Synchronous Buck Regulators:** Provides two independent step-down outputs.  
- **Wide Input Voltage Range (4.5V–28V):** Suitable for various power sources.  
- **Adjustable Output Voltage:** Configurable via external resistors.  
- **Programmable Switching Frequency (300kHz–1MHz):** Optimizes efficiency and reduces external component size.  
- **Power-Good Indicators:** Monitors output voltage status.  
- **Soft-Start Control:** Prevents inrush current during startup.  
- **Overcurrent and Thermal Protection:** Enhances system reliability.  
- **Low Shutdown Current (<10µA):** Reduces power consumption in standby mode.  

The MAX1540ETJ is commonly used in applications requiring **compact, high-efficiency power conversion** with multiple regulated outputs.  

For detailed datasheet information, refer to **Maxim Integrated (Analog Devices) official documentation**.

Application Scenarios & Design Considerations

Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator

Alternative Part Number

  • ISL6227CAZ --: Dual synchronous buck PWM controller with similar voltage-mode architecture and TQFN package, commonly used as a drop-in alternative in notebook power designs.
  • TPS51120PWPR --: Dual-channel synchronous buck controller with comparable input range and current-mode control, suitable replacement for multi-rail CPU/core supply applications.
  • RT8205LZQW --: Dual synchronous buck controller in a small QFN package with similar feature set, often used as a cost-effective substitute in portable power systems.
  • TPS51123RGER --: Dual-channel synchronous buck controller for notebook DDR/VCore rails, comparable input range and functionality, available in QFN package.
  • RT8205BGQW --: Dual synchronous buck controller with integrated drivers targeting notebook power supplies, functionally equivalent and cost-effective alternative.
  • ISL6262CRZ --: Two-phase PWM buck controller for CPU/GPU core supplies with similar voltage-mode architecture and TQFN package, a common cross for MAX1540 designs.
  • TPS51513RTE --: Single-phase synchronous buck controller with integrated drivers and comparable current-sense scheme, suitable as a functional substitute in point-of-load rails.
  • NCP5386MNR2G --: Multi-phase buck controller offering similar VID-based regulation and driver interface, usable as an alternative with minor layout adjustments.

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