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MAX1821EUB from MAX,MAXIM - Dallas Semiconductor

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MAX1821EUB

Manufacturer: MAX

WCDMA Cellular Phone 600mA Buck Regulators

Partnumber Manufacturer Quantity Availability
MAX1821EUB MAX 62285 In Stock

Description and Introduction

WCDMA Cellular Phone 600mA Buck Regulators The MAX1821EUB is a step-down 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 Integrated (Analog Devices)  

### **Part Number:**  
MAX1821EUB  

### **Package:**  
10-pin µMAX® (UB)  

### **Type:**  
Step-Down DC-DC Converter  

### **Key Specifications:**  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 600mA  
- **Switching Frequency:** 1MHz (Fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Features:**  
- **High Efficiency:** Uses synchronous rectification for improved power conversion.  
- **Low Dropout Operation:** Maintains regulation with input voltages close to the output.  
- **Pulse-Width Modulation (PWM) Mode:** Ensures stable performance under varying loads.  
- **Low Quiescent Current:** 40µA (typical) in shutdown mode.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Overcurrent and Thermal Protection:** Safeguards the device under fault conditions.  
- **Small Footprint:** 10-pin µMAX package for space-constrained applications.  

### **Applications:**  
- Portable and battery-powered devices  
- Handheld instruments  
- Digital cameras  
- Wireless peripherals  

For detailed electrical characteristics and application circuits, refer to the official datasheet from Maxim Integrated (Analog Devices).

Application Scenarios & Design Considerations

WCDMA Cellular Phone 600mA Buck Regulators

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