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MAX1897EGP from MAXIM,MAXIM - Dallas Semiconductor

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MAX1897EGP

Manufacturer: MAXIM

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

Partnumber Manufacturer Quantity Availability
MAX1897EGP MAXIM 803 In Stock

Description and Introduction

4.0-28 V, quick-PWM slave controller for multiphase, step-down supplie The MAX1897EGP is a lithium-ion (Li+) battery charger controller manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX1897EGP  
- **Package:** 20-pin SSOP (Shrink Small Outline Package)  
- **Input Voltage Range:** 4.5V to 12V  
- **Charge Voltage Accuracy:** ±0.75%  
- **Charge Current Accuracy:** ±5%  
- **Maximum Charge Current:** 4A (adjustable)  
- **Battery Voltage Range:** 2.5V to 4.2V (adjustable)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX1897EGP is a high-efficiency, switch-mode lithium-ion battery charger controller designed for single-cell Li+ batteries. It integrates a PWM (Pulse-Width Modulation) controller with power MOSFET drivers to optimize charging efficiency. The device supports constant-current (CC) and constant-voltage (CV) charging modes, ensuring safe and accurate charging for Li+ batteries.  

### **Features:**
- **High-Efficiency Switching Charger:** Reduces power dissipation compared to linear chargers.  
- **Programmable Charge Current:** Adjustable up to 4A via an external resistor.  
- **Precision Charge Voltage Regulation:** ±0.75% accuracy for optimal battery life.  
- **Automatic Recharge:** Initiates charging if battery voltage falls below a threshold.  
- **Charge Status Outputs:** Provides signals for charging, fault detection, and power-good.  
- **Thermal Regulation:** Reduces charge current if excessive temperature is detected.  
- **Input Overvoltage Protection (OVP):** Safeguards against high input voltage.  
- **Battery Detection:** Ensures charging only when a valid battery is connected.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • LTC3406ES5 --: High-efficiency synchronous step-down converter in a small package, functionally similar to the MAX1897 and widely used as a drop-in alternative.
  • TPS62040DGQ --: Low-input-voltage synchronous buck converter with comparable current capability and pin-compatible footprint options.
  • RT8010GQW --: Compact 1A synchronous step-down converter offering similar electrical performance at lower cost.
  • TPS51116PWP --: DDR memory power supply controller with similar function and pin-compatible layout, widely available and well documented.
  • ISL6537CRZ --: Integrated DDR power controller offering comparable regulation features and a proven alternative in memory supply designs.
  • LTC3717EGN --: High-efficiency synchronous buck controller suitable for similar power rail applications with flexible design options.

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