0.3-6.0V; high-efficiency, low-Iq PMICs with dynamic core for PDAs and smart phones. For PDA, palmtop and wireless handhelds, 3-generation smart cell phones, internet appliances and web-books The MAX1586ETM is a step-down DC-DC converter manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 1.2A  
- **Switching Frequency:** 1MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin TDFN (3mm x 3mm)  

### **Descriptions:**  
- The MAX1586ETM is a high-efficiency, step-down DC-DC converter designed for portable applications.  
- It integrates synchronous rectification to minimize power loss.  
- Features include low dropout operation, pulse-width modulation (PWM) control, and a fixed-frequency architecture.  

### **Features:**  
- **High Efficiency:** Up to 95% due to synchronous rectification.  
- **Low Dropout Operation:** Maintains regulation with small input-output differentials.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **1MHz Switching Frequency:** Allows for small external components.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Overcurrent and Thermal Protection:** Enhances reliability.  
- **Low Quiescent Current:** 40µA (typ) in shutdown mode.  

This information is sourced from Maxim Integrated's official documentation.

0.3-6.0V; high-efficiency, low-Iq PMICs with dynamic core for PDAs and smart phones. For PDA, palmtop and wireless handhelds, 3-generation smart cell phones, internet appliances and web-books