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MAX1673ESA

Manufacturer: MAXIM, MAXIM Pb-free

Regulated / 125mA-Output / Charge-Pump DC-DC Inverter

Partnumber Manufacturer Quantity Availability
MAX1673ESA MAXIM, MAXIM Pb-free 467 In Stock

Description and Introduction

Regulated / 125mA-Output / Charge-Pump DC-DC Inverter The MAX1673ESA is a high-efficiency, step-up DC-DC converter designed for low-power applications. Below are its key specifications, descriptions, and features:

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

### **Specifications:**  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage Range:** Adjustable from 2V to 5.5V (via external resistors)  
- **Output Current:** Up to 150mA (depending on input voltage)  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 94%  
- **Quiescent Current:** 16µA (typical)  
- **Shutdown Current:** <1µA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (ESA)  

### **Descriptions:**  
The MAX1673ESA is a low-power, step-up DC-DC converter optimized for battery-powered applications. It features a high switching frequency (500kHz) to minimize external component size while maintaining high efficiency. The device includes an internal N-channel MOSFET switch and can start up with input voltages as low as 0.7V, making it suitable for single-cell battery systems.  

### **Features:**  
- **Low Start-Up Voltage:** Operates down to 0.7V  
- **Adjustable Output Voltage (2V to 5.5V)**  
- **High Efficiency (up to 94%)**  
- **Low Quiescent Current (16µA)**  
- **Internal N-Channel Power MOSFET**  
- **500kHz Switching Frequency**  
- **Automatic Pulse-Frequency Modulation (PFM) for Light Load Efficiency**  
- **Undervoltage Lockout (UVLO) Protection**  
- **Thermal Shutdown Protection**  
- **Compact 8-Pin SOIC Package**  

This information is based solely on the manufacturer's datasheet and specifications.

Application Scenarios & Design Considerations

Regulated / 125mA-Output / Charge-Pump DC-DC Inverter

Alternative Part Number

  • LT1054CS8 --: Switched-capacitor voltage converter/inverter in an SO-8 package, functionally similar to the MAX1673 charge-pump inverter and widely used as a drop-in style alternative.
  • ICL7660ACPA --: Classic charge-pump voltage inverter offering similar inversion function; check package (DIP-8) and current rating against the design.
  • LM2662MX --: Switched-capacitor voltage converter that can invert or double supply voltage, a common alternative for MAX1673-type charge-pump inverter applications.
  • TC7660EOA --: SO-8 charge-pump inverter with similar topology and pinout family; verify output current and switching frequency meet the application needs.
  • ICL7660CSA --: Classic switched-capacitor voltage inverter in SOIC-8, functionally comparable for charge-pump conversion applications and easy to source.

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