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MAX1680ESA from MAXIM,MAXIM - Dallas Semiconductor

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MAX1680ESA

Manufacturer: MAXIM, MAX

125mA / Frequency-Selectable / Switched-Capacitor Voltage Converters
Partnumber Manufacturer Quantity Availability
MAX1680ESA MAXIM, MAX 1598 In Stock

Description and Introduction

125mA / Frequency-Selectable / Switched-Capacitor Voltage Converters The MAX1680ESA is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 4V to 28V  
- **Output Voltage Range:** Adjustable from 1.25V to 26V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 100kHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (ESA)  

### **Descriptions:**  
The MAX1680ESA is a step-down (buck) DC-DC converter designed for high-efficiency power conversion in a compact package. It integrates a power MOSFET switch and control circuitry, making it suitable for applications requiring a regulated output voltage from a higher input voltage. The device operates at a fixed 100kHz switching frequency and includes features such as soft-start, current limiting, and thermal shutdown for reliable operation.

### **Features:**  
- **Adjustable Output Voltage** (via external resistors)  
- **Integrated Power MOSFET** (reduces external component count)  
- **Current-Mode Control** for improved transient response  
- **Soft-Start Function** to minimize inrush current  
- **Thermal Shutdown Protection**  
- **Low Quiescent Current** (typically 2.5mA)  
- **Wide Input Voltage Range** (4V to 28V)  
- **Compact SOIC Package** for space-constrained applications  

This information is strictly factual and derived from the manufacturer's datasheet.

Application Scenarios & Design Considerations

125mA / Frequency-Selectable / Switched-Capacitor Voltage Converters

Alternative Part Number

  • LT1054CS8 --: Switched-capacitor voltage converter with similar inverting/doubling function and 8-pin SOIC package; widely available and well-documented alternative.
  • ICL7660ACPA --: Classic charge-pump voltage inverter offering comparable functionality for many MAX1680 applications, though in a DIP package requiring layout adjustment.
  • TC7660EOA --: Charge-pump voltage converter in 8-pin SOIC with similar inverting capability; a cost-effective substitute when exact current rating is not critical.
  • ICL7660SCPA --: Classic charge-pump voltage converter offering inverting and doubling modes; functionally similar though in DIP-8, suitable for drop-in redesign or adapter use.
  • LM2662M --: Switched-capacitor voltage converter with similar inverting/doubling function and comparable current capability, widely available and pin-compatible in many designs.
  • ICL7660 --: Classic charge-pump voltage inverter offering the same basic negative-supply conversion function, a well-established alternative for low-current applications.
  • LTC1144 --: Switched-capacitor voltage converter with higher input voltage range and similar inverting/doubling operation, suitable as a functional replacement.

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