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MAX8840ELT45+TG65 from MAXIM,MAXIM - Dallas Semiconductor

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MAX8840ELT45+TG65

Manufacturer: MAXIM

Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN

Partnumber Manufacturer Quantity Availability
MAX8840ELT45+TG65 MAXIM 6895 In Stock

Description and Introduction

Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN The **MAX8840ELT45+TG65** is a **linear battery charger** manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.25V to 13V  
- **Charge Voltage:** 4.5V (fixed)  
- **Charge Current:** Up to 500mA (programmable)  
- **Battery Type:** Single-cell Li+ (Lithium-Ion/Polymer)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 6-pin TDFN (2mm x 2mm)  

### **Descriptions:**  
- **Linear Charger:** Provides a simple, compact solution for charging single-cell Li+ batteries.  
- **Thermal Regulation:** Automatically reduces charge current to prevent overheating.  
- **Charge Termination:** Automatically stops charging when the battery reaches full capacity.  

### **Features:**  
- **Input Overvoltage Protection (OVP):** Protects against input voltages up to 13V.  
- **Reverse Current Blocking:** Prevents battery discharge when input power is removed.  
- **No External MOSFET or Diode Required:** Integrated design simplifies circuitry.  
- **Precision Charge Voltage Regulation:** ±1% accuracy.  
- **Charge Status Output:** Indicates charging state (active/powered down).  

This charger is designed for **portable devices** such as smartphones, tablets, and other battery-powered applications.  

(Source: Maxim Integrated datasheet)

Application Scenarios & Design Considerations

Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN

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