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MAX1847EEE+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1847EEE+

Manufacturer: MAXIM, MAX

High-Efficiency, Current-Mode, Inverting PWM Controller

Partnumber Manufacturer Quantity Availability
MAX1847EEE+,MAX1847EEE MAXIM, MAX 3050 In Stock

Description and Introduction

High-Efficiency, Current-Mode, Inverting PWM Controller The MAX1847EEE+ is a step-down (buck) DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer:**  
- **MAX** (Maxim Integrated, now part of Analog Devices)  

### **Specifications:**  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-QSOP (Quad Flat Small Outline Package)  
- **Regulation Type:** PWM (Pulse-Width Modulation)  

### **Descriptions:**  
- The MAX1847EEE+ is a high-efficiency, step-down DC-DC converter designed for low-power applications.  
- It integrates a synchronous rectifier to improve efficiency and reduce external component count.  
- The device operates at a fixed 1MHz switching frequency, allowing for small external components.  
- It features a low-dropout (LDO) mode for improved efficiency at light loads.  

### **Features:**  
- **High Efficiency:** Up to 95% efficiency with synchronous rectification.  
- **Low Quiescent Current:** 30µA (typical) in shutdown mode.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Overcurrent Protection:** Prevents damage under fault conditions.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Small Footprint:** 16-QSOP package for space-constrained applications.  

This information is strictly based on the manufacturer's datasheet and technical documentation. No additional suggestions or guidance are included.

Application Scenarios & Design Considerations

High-Efficiency, Current-Mode, Inverting PWM Controller

Alternative Part Number

  • LT1945EMS#PBF --: Dual-channel high-voltage step-up/inverting DC-DC converter in MSOP-16, functionally similar to the MAX1847 for LCD bias and general boost/inverter applications.
  • TPS65130RGER --: Dual-output boost plus inverting converter in a small QFN package, commonly used as a direct substitute for MAX1847-class LCD bias supplies.
  • MC34063ADR2G --: Widely available general-purpose inverting/step-up switching regulator that can be configured to replicate the MAX1847 inverting function at lower cost, though with lower switching frequency and efficiency.
  • TPS65131RGER --: Dual-output boost plus inverting converter in a small package, suitable as a functional substitute for split-rail LCD bias supplies.

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