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MAX8819AETI+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX8819AETI+

Manufacturer: MAXIM

PMIC with Integrated Charger and Smart Power Selector™ in a 4mm x 4mm TQFN

Partnumber Manufacturer Quantity Availability
MAX8819AETI+ MAXIM 238 In Stock

Description and Introduction

PMIC with Integrated Charger and Smart Power Selector™ in a 4mm x 4mm TQFN The MAX8819AETI+ is a high-efficiency, step-up DC-DC converter manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage Range:** Adjustable from 1.8V to 5.5V (fixed or via external resistors)  
- **Output Current:** Up to 600mA (depending on input/output conditions)  
- **Switching Frequency:** 1.2MHz (typical)  
- **Efficiency:** Up to 95%  
- **Quiescent Current:** 30µA (typical)  
- **Shutdown Current:** <1µA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin TQFN (5mm x 5mm)  

### **Description:**  
The MAX8819AETI+ is a synchronous step-up DC-DC converter optimized for low-input-voltage applications, such as single-cell or dual-cell alkaline/NiMH battery-powered devices. It integrates a low-resistance switch to maximize efficiency and includes features like soft-start, overcurrent protection, and thermal shutdown.  

### **Features:**  
- **True Low-Voltage Operation:** Starts up with input as low as 0.7V.  
- **Synchronous Rectification:** Improves efficiency and eliminates the need for an external Schottky diode.  
- **Adjustable/Fixed Output Voltage:** Supports preset or resistor-programmable output voltages.  
- **Low Quiescent Current:** Extends battery life in portable applications.  
- **Integrated Soft-Start:** Reduces inrush current during startup.  
- **Overcurrent and Thermal Protection:** Enhances system reliability.  
- **Small Footprint:** 28-pin TQFN package saves board space.  

This device is commonly used in **portable electronics, medical devices, and energy-harvesting applications** where efficient power conversion from low-voltage sources is required.  

*(Data sourced from Maxim Integrated product documentation.)*

Application Scenarios & Design Considerations

PMIC with Integrated Charger and Smart Power Selector™ in a 4mm x 4mm TQFN

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