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MAX1797EUA+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1797EUA+

Manufacturer: MAXIM, N/A

Low-Supply Current, Step-Up DC-DC Converters with True Shutdown

Partnumber Manufacturer Quantity Availability
MAX1797EUA+,MAX1797EUA MAXIM, N/A 2610 In Stock

Description and Introduction

Low-Supply Current, Step-Up DC-DC Converters with True Shutdown The MAX1797EUA+ is a step-up DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage Range:** Adjustable from 2.5V to 5.5V (fixed or adjustable versions available)  
- **Output Current:** Up to 300mA  
- **Switching Frequency:** 500kHz  
- **Efficiency:** Up to 94%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin μMAX (3mm x 3mm)  

### **Descriptions:**
- The MAX1797EUA+ is a high-efficiency, step-up DC-DC converter optimized for low-input-voltage applications.  
- It integrates a synchronous rectifier for improved efficiency and eliminates the need for an external Schottky diode.  
- Suitable for battery-powered devices, portable electronics, and energy-harvesting applications.  

### **Features:**
- **Low Start-Up Voltage:** Operates down to 0.7V input.  
- **Synchronous Rectification:** Enhances efficiency and reduces external component count.  
- **Adjustable/Fixed Output:** Available in fixed (2.5V, 3.3V, 5V) or adjustable output versions.  
- **Low Quiescent Current:** 25μA (typical) in shutdown mode.  
- **Internal Soft-Start:** Prevents inrush current at startup.  
- **Overcurrent and Thermal Protection:** Ensures safe operation under fault conditions.  

This information is sourced from the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Low-Supply Current, Step-Up DC-DC Converters with True Shutdown

Alternative Part Number

  • TPS61020DRCR --: Boost converter with integrated switch and similar input/output voltage range, pin-compatible footprint in a small package, widely available and lower cost.
  • LTC3525ESC6-3.3 --: High-efficiency synchronous boost converter in a tiny SC70 package, suitable replacement for low-power step-up applications with similar current capability.
  • NCP1402SN33T1G --: Compact PFM step-up DC-DC converter with fixed 3.3V output, good drop-in option for battery-powered boost designs when exact MAX1797 features are not critical.
  • TPS61220DCKR --: Low-input boost converter with comparable switching frequency and output capability, suitable replacement when layout adjustments are acceptable.

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