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MAX856CSA from MAX,MAXIM - Dallas Semiconductor

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MAX856CSA

Manufacturer: MAX, MAXIM, MAXIN, MAXIM

3.3V/5V or Adjustable-Output, Step-Up DC-DC Converters

Partnumber Manufacturer Quantity Availability
MAX856CSA MAX, MAXIM, MAXIN, MAXIM 474 In Stock

Description and Introduction

3.3V/5V or Adjustable-Output, Step-Up DC-DC Converters The MAX856CSA is a step-up 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:** MAXIM (now Analog Devices)  
### **Part Number:** MAX856CSA  
### **Category:** DC-DC Switching Regulator  

### **Key Specifications:**  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage Options:** Adjustable (via external resistors) or fixed (3.3V, 5V)  
- **Output Current:** Up to 300mA (depending on input voltage)  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 94%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (CSA suffix)  

### **Descriptions:**  
The MAX856CSA is a low-power, step-up (boost) DC-DC converter designed for battery-powered applications. It features a high-efficiency, current-limited PWM controller with an internal N-channel MOSFET switch. The device is optimized for low-input-voltage operation, making it suitable for single-cell or dual-cell battery-powered systems.  

### **Features:**  
- **Low Start-Up Voltage:** Operates down to 0.7V  
- **Adjustable or Fixed Output Voltage**  
- **Internal 0.5Ω N-Channel Power MOSFET**  
- **Low Quiescent Current:** 40µA (typical)  
- **Current-Limiting and Undervoltage Lockout (UVLO) Protection**  
- **Small Footprint:** 8-pin SOIC package  

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

Application Scenarios & Design Considerations

3.3V/5V or Adjustable-Output, Step-Up DC-DC Converters

Alternative Part Number

  • LTC3525ESC6-3.3 --: Compact synchronous boost converter with fixed 3.3V output, similar boost regulator function and low quiescent current, suitable drop-in for many MAX856 applications.
  • TPS61070DDCR --: High-efficiency synchronous boost converter in small SOT-23 package, comparable input voltage range and output current, widely available alternative.
  • NCP1402SN33T1G --: Low-power PFM step-up DC-DC converter with 3.3V output, similar boost topology and pin-compatible footprint for many designs.
  • TPS61020DRC --: Boost converter with comparable switching frequency and current capability; good drop-in candidate for 3.3V/5V step-up designs.

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