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MAX1897ETP from MAXIM,MAXIM - Dallas Semiconductor

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MAX1897ETP

Manufacturer: MAXIM

4.0-28 V, quick-PWM slave controller for multiphase, step-down supplie

Partnumber Manufacturer Quantity Availability
MAX1897ETP MAXIM 198 In Stock

Description and Introduction

4.0-28 V, quick-PWM slave controller for multiphase, step-down supplie The MAX1897ETP is a linear battery charger IC manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on available factual information:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Package:** 20-pin TQFN (Thin Quad Flat No-Lead)  
- **Input Voltage Range:** 4.5V to 12V  
- **Charge Voltage Accuracy:** ±0.75%  
- **Programmable Charge Current:** Up to 4A  
- **Battery Chemistry Support:** Lithium-Ion (Li+)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Charge Termination:** Programmable timer or voltage-based  

### **Descriptions:**  
The MAX1897ETP is a high-efficiency, stand-alone linear battery charger designed for single-cell Li+ batteries. It integrates a precision voltage regulator, current-sensing circuitry, and thermal regulation to ensure safe and efficient charging. The device supports both constant-current and constant-voltage charging phases, with automatic charge termination.  

### **Features:**  
- **Automatic Recharge:** Initiates charging if battery voltage falls below a threshold.  
- **Thermal Regulation:** Reduces charge current if temperature exceeds safe limits.  
- **Charge Status Outputs:** Provides open-drain outputs for charging/fault indication.  
- **Low-Dropout Operation:** Minimizes power dissipation.  
- **Reverse Battery Protection:** Safeguards against incorrect battery insertion.  
- **Programmable Timer:** Prevents overcharging with adjustable safety timer.  

This information is sourced from Maxim Integrated's official documentation. For detailed application notes or schematics, refer to the datasheet.

Application Scenarios & Design Considerations

4.0-28 V, quick-PWM slave controller for multiphase, step-down supplie

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