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MAX8557ETE+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX8557ETE+

Manufacturer: MAXIM, N/A

4A Ultra-Low-Input-Voltage LDO Regulators

Partnumber Manufacturer Quantity Availability
MAX8557ETE+,MAX8557ETE MAXIM, N/A 2560 In Stock

Description and Introduction

4A Ultra-Low-Input-Voltage LDO Regulators The MAX8557ETE+ is a step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on the available knowledge:

### **Specifications:**
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.6V to VIN  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-Pin TQFN (5mm x 5mm)  
- **Duty Cycle:** Up to 100%  

### **Descriptions:**  
The MAX8557ETE+ is a synchronous step-down DC-DC converter designed for high-efficiency power conversion in applications such as portable devices, networking equipment, and industrial systems. It integrates high-side and low-side MOSFETs, reducing external component count. The device supports forced-PWM and pulse-skipping modes for improved efficiency across load conditions.

### **Features:**  
- **Integrated Power MOSFETs** (No external FETs required)  
- **Adjustable Output Voltage** (0.6V to VIN)  
- **1MHz Fixed Switching Frequency**  
- **High Efficiency (Up to 95%)**  
- **100% Duty Cycle Operation** (Supports low dropout)  
- **Overcurrent and Thermal Protection**  
- **Forced-PWM and Pulse-Skipping Modes**  
- **Small Footprint (16-Pin TQFN)**  

This information is strictly factual and derived from the manufacturer's datasheet.

Application Scenarios & Design Considerations

4A Ultra-Low-Input-Voltage LDO Regulators

Alternative Part Number

  • TPS7A4700RGWR --: Low-noise LDO regulator with similar current capability and low dropout, suitable replacement in many analog supply rails.
  • LT1963AEQ --: Low-dropout linear regulator with comparable output current and low noise, widely used as a MAX8557 substitute.
  • ADP1741ACPZ-R7 --: High-current low-dropout regulator with similar package and electrical characteristics, good functional alternative.
  • LT3080EST#PBF --: Adjustable low-dropout linear regulator with comparable current rating and low noise, widely used as a MAX8557 substitute.
  • ADP7142ARDZ-3.3 --: Low-noise CMOS LDO with similar package footprint and current capability, offering a practical drop-in style alternative.

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