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MAX1858EEG from T32D

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MAX1858EEG

Manufacturer: T32D

Dual 180 Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR

Partnumber Manufacturer Quantity Availability
MAX1858EEG T32D 67 In Stock

Description and Introduction

Dual 180 Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR The MAX1858EEG+T is a step-up DC-DC converter from Maxim Integrated (now part of Analog Devices). Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage:** Adjustable from 1.8V to 5.5V  
- **Output Current:** Up to 300mA (depending on input/output conditions)  
- **Switching Frequency:** 500kHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 24-pin QSOP  

### **Descriptions:**
The MAX1858EEG+T is a high-efficiency, low-voltage, step-up DC-DC converter designed for battery-powered applications. It integrates a synchronous rectifier for improved efficiency and is optimized for low-input-voltage operation, making it suitable for single-cell or dual-cell alkaline/NiMH battery systems.

### **Features:**
- **True Low-Voltage Operation:** Starts up with inputs as low as 0.7V.  
- **Synchronous Rectification:** Improves efficiency and eliminates the need for an external Schottky diode.  
- **Adjustable Output Voltage:** Set via an external resistor divider.  
- **Low Quiescent Current:** 25µA (typical) for improved battery life.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low-input conditions.  
- **Thermal Shutdown Protection:** Prevents damage from excessive heat.  

This device is commonly used in portable electronics, medical devices, and other low-power applications requiring efficient voltage conversion.

Application Scenarios & Design Considerations

Dual 180 Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR
Partnumber Manufacturer Quantity Availability
MAX1858EEG MAXIM 1000 In Stock

Description and Introduction

Dual 180 Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR The MAX1858EEG is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable from 0.8V to 90% of VIN  
- **Output Current:** Up to 5A  
- **Switching Frequency:** 300kHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 24-pin QSOP  

### **Descriptions:**
- The MAX1858EEG is a synchronous buck (step-down) DC-DC converter designed for high-efficiency power conversion.  
- It integrates high-side and low-side MOSFETs, reducing external component count.  
- Suitable for applications requiring high current and wide input voltage ranges, such as industrial, telecom, and automotive systems.  

### **Features:**
- **Integrated Power MOSFETs:** Reduces external component requirements.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **PWM/PFM Mode Operation:** Optimizes efficiency at light loads.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Overcurrent and Thermal Protection:** Enhances reliability.  
- **Low Dropout Operation:** Maintains regulation even when input voltage is close to output.  

For detailed application notes and schematics, refer to the official datasheet from Maxim Integrated (Analog Devices).

Application Scenarios & Design Considerations

Dual 180 Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR

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