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MAX1902EAI+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX1902EAI+T

Manufacturer: MAXIM

500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

Partnumber Manufacturer Quantity Availability
MAX1902EAI+T,MAX1902EAIT MAXIM 51950 In Stock

Description and Introduction

500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers The **MAX1902EAI+T** is a **battery-charger controller IC** manufactured by **Maxim Integrated (now part of Analog Devices)**. Below are its key specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX1902EAI+T  
- **Package:** 28-pin SSOP (Shrink Small Outline Package)  
- **Operating Voltage Range:** 4.5V to 28V (input supply)  
- **Charge Voltage Range:** Adjustable or fixed (selectable for different battery chemistries)  
- **Charge Current:** Programmable via external resistor  
- **Charging Method:** Switch-mode (PWM) controller for high efficiency  
- **Battery Chemistries Supported:** Li-Ion, NiMH, NiCd  
- **Charge Termination:** Voltage-based (for Li-Ion) or temperature-based (for NiMH/NiCd)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The **MAX1902EAI+T** is a **high-efficiency battery-charger controller** designed for **single-cell or multi-cell battery packs**.  
- It uses a **switching regulator topology** for minimal power dissipation, making it suitable for **portable and handheld devices**.  
- The IC supports **multiple battery chemistries** with **programmable charge current and voltage**.  
- It includes **automatic charge termination** based on battery type (voltage threshold for Li-Ion or temperature sensing for NiMH/NiCd).  

### **Features:**  
- **High-Efficiency Switching Charger:** Reduces heat dissipation compared to linear chargers.  
- **Wide Input Voltage Range (4.5V–28V):** Supports various power sources (AC adapters, USB, etc.).  
- **Programmable Charge Current:** Adjustable via an external resistor.  
- **Automatic Charge Termination:** Prevents overcharging.  
- **Thermal Regulation:** Protects against overheating.  
- **Low Battery Detection:** Monitors battery voltage.  
- **Small Footprint:** 28-pin SSOP package for space-constrained designs.  

This IC is commonly used in **laptops, portable electronics, and battery-powered systems** requiring efficient charging.  

*(Note: Always refer to the latest datasheet for detailed technical specifications.)*

Application Scenarios & Design Considerations

500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

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