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MAX668EUB+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX668EUB+

Manufacturer: MAXIM

1.8V to 28V Input, PWM Step-Up Controllers in µMAX

Partnumber Manufacturer Quantity Availability
MAX668EUB+,MAX668EUB MAXIM 44 In Stock

Description and Introduction

1.8V to 28V Input, PWM Step-Up Controllers in µMAX The MAX668EUB+ is a step-up DC-DC controller manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Type:** Step-Up (Boost) DC-DC Controller  
- **Input Voltage Range:** 1.8V to 28V  
- **Output Voltage Range:** Adjustable up to 28V  
- **Switching Frequency:** 100kHz to 500kHz (adjustable)  
- **Maximum Output Current:** Depends on external components  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX (MicroMAX)  
- **Efficiency:** Up to 95%  
- **Duty Cycle:** Up to 94%  

### **Descriptions:**  
The MAX668EUB+ is a versatile, high-efficiency, step-up DC-DC controller designed for battery-powered and low-voltage applications. It operates with an external N-channel MOSFET, allowing flexibility in power handling. The device features a fixed-frequency PWM control scheme with adjustable switching frequency (100kHz to 500kHz) for optimized efficiency and component size.  

### **Features:**  
- Wide input voltage range (1.8V to 28V)  
- Adjustable output voltage up to 28V  
- External N-MOSFET driver for high-power applications  
- Adjustable switching frequency (100kHz–500kHz)  
- Low shutdown current (<5µA)  
- Soft-start capability  
- Overvoltage protection (OVP)  
- Current-mode control for improved transient response  
- Compact µMAX package for space-constrained designs  

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

Application Scenarios & Design Considerations

1.8V to 28V Input, PWM Step-Up Controllers in &micro;MAX

Alternative Part Number

  • LT1945EMS#PBF --: Dual boost/SEPIC/inverting DC-DC converter in MSOP-10 with comparable input range and switching frequency, suitable replacement for MAX668 boost applications.
  • TPS61170DRVR --: High-voltage boost converter in 3x3 DFN with integrated switch, similar wide input range and current-mode control, good functional substitute.
  • MC34063ADR2G --: Widely available general-purpose DC-DC switching regulator controller supporting boost, buck and inverting topologies, lower cost but lower switching frequency.

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