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MAX1845EEI+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1845EEI+

Manufacturer: MAXIM

Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit

Partnumber Manufacturer Quantity Availability
MAX1845EEI+,MAX1845EEI MAXIM 852 In Stock

Description and Introduction

Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit The **MAX1845EEI+** is a DC-DC converter IC manufactured by **MAXIM Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Manufacturer:** MAXIM Integrated  
- **Part Number:** MAX1845EEI+  
- **Package:** 28-pin QSOP (Quarter Small Outline Package)  
- **Type:** Step-Up (Boost) DC-DC Converter  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage Range:** Adjustable (up to 28V)  
- **Output Current:** Up to 300mA (dependent on input/output conditions)  
- **Switching Frequency:** 500kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX1845EEI+ is a high-efficiency, step-up DC-DC converter designed for low-input-voltage applications. It integrates a power MOSFET and is optimized for battery-powered systems, providing a regulated output voltage from a single-cell or dual-cell battery input.  

### **Features:**
- **Low Start-Up Voltage (0.7V):** Suitable for single-cell alkaline/NiMH batteries.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Integrated Power MOSFET:** Simplifies design and reduces external components.  
- **Low Quiescent Current (50µA):** Enhances battery life.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Thermal Shutdown Protection:** Safeguards against overheating.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  

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

Application Scenarios & Design Considerations

Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit
Partnumber Manufacturer Quantity Availability
MAX1845EEI+,MAX1845EEI MAX 40 In Stock

Description and Introduction

Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit The MAX1845EEI+ is a step-down DC-DC converter manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX1845EEI+  
- **Type:** Step-Down (Buck) DC-DC Converter  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin QSOP (Exposed Pad)  

### **Descriptions:**  
The MAX1845EEI+ is a high-efficiency, step-down DC-DC converter designed for low-voltage applications. It integrates synchronous rectification to minimize power loss and improve efficiency. The device operates at a fixed 1MHz switching frequency, allowing the use of small external components. It features a low-dropout (LDO) mode for improved efficiency at light loads.  

### **Features:**  
- **High Efficiency (up to 95%)**  
- **Synchronous Rectification**  
- **1MHz Fixed Switching Frequency**  
- **Adjustable Output Voltage (0.8V to VIN)**  
- **Low-Dropout (LDO) Mode for Light Loads**  
- **Internal Soft-Start**  
- **Overcurrent and Overtemperature Protection**  
- **Small Footprint (28-pin QSOP Package)**  

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

Application Scenarios & Design Considerations

Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit

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