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MAX1649ESA+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1649ESA+

Manufacturer: MAXIM, MAX

5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controller

Partnumber Manufacturer Quantity Availability
MAX1649ESA+,MAX1649ESA MAXIM, MAX 3289 In Stock

Description and Introduction

5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controller The MAX1649ESA+ is a DC-DC converter IC manufactured by Maxim Integrated.  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Category:** Power Management IC  
- **Type:** Step-Up (Boost) DC-DC Converter  
- **Input Voltage Range:** 1.8V to 16.5V  
- **Output Voltage Range:** Adjustable (up to 28V)  
- **Output Current:** Up to 300mA  
- **Switching Frequency:** 500kHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Features:**  
  - Low quiescent current (100µA typical)  
  - Internal power MOSFET  
  - Adjustable output voltage  
  - Soft-start capability  
  - Overcurrent protection  

### **Descriptions and Features:**  
The MAX1649ESA+ is a high-efficiency, step-up DC-DC converter designed for battery-powered applications. It integrates a power MOSFET, reducing external component count. The adjustable output voltage allows flexibility in various power supply designs. Its low quiescent current makes it suitable for portable devices, while the 500kHz switching frequency enables compact inductor and capacitor selection.  

Key features include:  
- **Wide Input Voltage Range:** Supports battery-powered systems with varying input levels.  
- **High Efficiency:** Minimizes power loss in battery-operated applications.  
- **Integrated MOSFET:** Simplifies circuit design.  
- **Adjustable Output:** Configurable for different voltage requirements.  
- **Protection Features:** Includes overcurrent and thermal shutdown protection.  

This IC is commonly used in portable electronics, medical devices, and industrial applications requiring efficient power conversion.  

(Note: All information is based on the manufacturer's datasheet.)

Application Scenarios & Design Considerations

5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controller

Alternative Part Number

  • LTC1624CS8#PBF --: High-efficiency step-down switching regulator controller in SO-8 with similar input voltage range and current-mode control, a common drop-in style alternative to the MAX1649.
  • LM3478MM/NOPB --: Wide-input low-side N-channel controller in MSOP-8 that can be configured for step-down/step-up topologies, offering comparable functionality with a different series naming.
  • MC34063ACD --: Classic general-purpose DC-DC converter IC in SOIC-8 supporting buck, boost, and inverting configurations; widely available and cost-effective substitute for simple regulator designs.
  • MC34063ACD-TR --: Classic general-purpose DC-DC converter IC in SO-8 that supports step-down, step-up and inverting topologies, providing a low-cost and widely available fallback option.

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