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MAX1555EZK+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX1555EZK+T

Manufacturer: MAXIM

SOT23, Dual-Input, USB/AC Adapter, 1-Cell Li+ Battery Chargers

Partnumber Manufacturer Quantity Availability
MAX1555EZK+T MAXIM 6000 In Stock

Description and Introduction

SOT23, Dual-Input, USB/AC Adapter, 1-Cell Li+ Battery Chargers The MAX1555EZK+T is a lithium-ion battery charger from Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 7V  
- **Charging Voltage:** 4.2V (adjustable)  
- **Charging Current:** Up to 800mA (programmable)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 5-pin SOT23  
- **Charge Termination:** Automatic (based on current threshold)  
- **Low Battery Detection:** Yes  
- **Power-On Reset (POR):** Yes  
- **Reverse Battery Protection:** Yes  

### **Descriptions:**  
The MAX1555EZK+T is a compact, linear charger designed for single-cell lithium-ion (Li+) or lithium-polymer (Li-Poly) batteries. It integrates a power MOSFET, current sense circuitry, and thermal regulation, eliminating the need for external components.  

### **Features:**  
- **USB and AC Adapter Compatible** – Works with USB power sources or AC adapters.  
- **Thermal Regulation** – Prevents overheating by reducing charge current if necessary.  
- **Automatic Recharge** – Initiates charging if battery voltage drops below a threshold.  
- **Low Dropout Operation** – Allows charging even with lower input voltages.  
- **Charge Status Output** – Indicates charging state (open-drain output).  
- **No External FET or Diode Required** – Integrated power MOSFET simplifies design.  

This device is commonly used in portable electronics like smartphones, tablets, and other battery-powered devices.  

Would you like additional details on any specific aspect?

Application Scenarios & Design Considerations

SOT23, Dual-Input, USB/AC Adapter, 1-Cell Li+ Battery Chargers

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