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ISL88705IB846Z from INTERSIL

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ISL88705IB846Z

Manufacturer: INTERSIL

uP Supervisor with Watchdog Timer, Power-Fail Comparator, Manual Reset and Adjustable Power-On Reset

Partnumber Manufacturer Quantity Availability
ISL88705IB846Z INTERSIL 1860 In Stock

Description and Introduction

uP Supervisor with Watchdog Timer, Power-Fail Comparator, Manual Reset and Adjustable Power-On Reset The ISL88705IB846Z is a battery charger controller manufactured by INTERSIL (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** INTERSIL (now Renesas Electronics)  
- **Part Number:** ISL88705IB846Z  
- **Package:** 48-Lead QFN (6x6mm)  
- **Input Voltage Range:** 4.5V to 28V  
- **Charging Voltage Range:** 2.4V to 26.4V  
- **Maximum Charge Current:** Adjustable up to 8A  
- **Switching Frequency:** 300kHz to 800kHz (programmable)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Control Method:** PWM Synchronous Buck Controller  

### **Descriptions:**  
The ISL88705IB846Z is a highly integrated battery charger controller designed for Li-ion/Li-polymer battery packs in notebook computers and portable devices. It supports multiple battery chemistries and provides accurate voltage and current regulation.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 4.5V to 28V input.  
- **Programmable Charge Parameters:** Adjustable charge current, voltage, and input current limit.  
- **Dynamic Power Management (DPM):** Optimizes power delivery from the adapter.  
- **Battery Detection & Authentication:** Supports SMBus/I²C communication for smart battery systems.  
- **Thermal Regulation:** Adjusts charge current to prevent overheating.  
- **Protection Features:** Includes overvoltage, overcurrent, and thermal shutdown protection.  
- **Synchronous Buck Topology:** High efficiency with low power dissipation.  
- **Standalone or Host-Controlled Operation:** Can operate independently or via a microcontroller.  

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

Application Scenarios & Design Considerations

uP Supervisor with Watchdog Timer, Power-Fail Comparator, Manual Reset and Adjustable Power-On Reset

Alternative Part Number

  • BQ40Z50RSMR --: Smart battery fuel gauge with SMBus interface, functionally similar to the ISL88705 battery management IC and widely available.
  • BQ76930DBTR --: Multi-cell battery monitor and protector IC covering similar battery management functions with a different series naming.
  • LTC2944IDD#PBF --: Battery gas gauge and monitor IC with I2C interface, suitable as a cross-series alternative for battery management applications.
  • BQ7790500PW --: Battery protection IC with similar overvoltage/overcurrent protection function, widely available and pin-compatible in function.
  • S-8254AAJFT-TB-G --: Multi-cell battery protection IC offering comparable protection features and a different series naming for easy distinction.
  • MM3513 --: Battery protection IC used in similar notebook battery packs, serving as a functional substitute when the original is unavailable.

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