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MAX1640EEE from MAXIM,MAXIM - Dallas Semiconductor

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MAX1640EEE

Manufacturer: MAXIM

Adjustable-Output / Switch-Mode Current Sources with Synchronous Rectifier

Partnumber Manufacturer Quantity Availability
MAX1640EEE MAXIM 1710 In Stock

Description and Introduction

Adjustable-Output / Switch-Mode Current Sources with Synchronous Rectifier The MAX1640EEE is a step-down switching regulator manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual data from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX1640EEE  
- **Package:** 16-QSOP (QSOP-16)  
- **Input Voltage Range:** 4V to 30V  
- **Output Voltage Range:** Adjustable from 1.25V to 16V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 300kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Regulation Type:** Step-Down (Buck) Converter  

### **Descriptions:**  
The MAX1640EEE is a high-efficiency, step-down DC-DC converter designed for applications requiring a regulated output voltage lower than the input supply. It integrates a power MOSFET switch, reducing external component count. The device operates at a fixed switching frequency of 300kHz, making it suitable for space-constrained designs.  

### **Features:**  
- **Wide Input Voltage Range (4V to 30V)** – Supports various power sources.  
- **Adjustable Output Voltage (1.25V to 16V)** – Set via external resistors.  
- **High Efficiency (Up to 90%)** – Minimizes power loss.  
- **Internal Power MOSFET** – Simplifies design and reduces external parts.  
- **300kHz Fixed Switching Frequency** – Reduces output ripple and inductor size.  
- **Low Dropout Operation** – Maintains regulation even when input voltage approaches output.  
- **Thermal Shutdown Protection** – Prevents damage from overheating.  
- **Current-Limit Protection** – Safeguards against excessive load currents.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Adjustable-Output / Switch-Mode Current Sources with Synchronous Rectifier

Alternative Part Number

  • LTC1625CS8 --: High-efficiency current-mode step-down switching regulator controller in an SO-8 package, functionally similar to the MAX1640 for battery charger and DC-DC controller applications.
  • UC3843AN --: Widely available current-mode PWM controller with similar control-loop behavior, commonly used as a drop-in substitute in charger and power-supply designs.
  • MC34063ACN --: Versatile low-cost switching regulator controller that can implement step-down/step-up/inverting topologies, suitable for less demanding replacements of the MAX1640.
  • LM3478MM --: Low-side N-channel MOSFET controller for boost/flyback topologies, comparable control function and commonly used as a cross-reference for MAX1640-class controllers.
  • MC34063AP --: Versatile DC-DC switching regulator controller in DIP-8, inexpensive and broadly stocked, suitable for simple step-down/step-up designs as a fallback alternative.

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