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MAX7129CPL from MAXIM,MAXIM - Dallas Semiconductor

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MAX7129CPL

Manufacturer: MAXIM, MAXI, MAX

4-1/2 Digit Single-Chip A/D Converter with LCD Driver

Partnumber Manufacturer Quantity Availability
MAX7129CPL MAXIM, MAXI, MAX 1039 In Stock

Description and Introduction

4-1/2 Digit Single-Chip A/D Converter with LCD Driver The MAX7129CPL is a battery charger controller manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX7129CPL  
- **Package:** PLCC (Plastic Leaded Chip Carrier)  
- **Pin Count:** 20  
- **Input Voltage Range:** 4.5V to 28V  
- **Charge Current:** Programmable up to 4A  
- **Battery Types Supported:** NiMH (Nickel-Metal Hydride), NiCd (Nickel-Cadmium)  
- **Charge Termination Methods:** Voltage slope (-ΔV), Temperature, or timeout  
- **Operating Temperature Range:** 0°C to +70°C  

### **Descriptions:**  
The MAX7129CPL is a fast-charge controller designed for NiMH and NiCd battery packs. It provides a complete charging solution with programmable charge current, automatic charge termination, and safety features. The device supports multiple termination methods, including negative delta voltage (-ΔV), temperature sensing, and backup timeout.

### **Features:**  
- **Fast-Charge Control:** Optimizes charging for NiMH/NiCd batteries.  
- **Programmable Charge Current:** Adjustable via an external resistor.  
- **Multiple Termination Methods:**  
  - Negative delta voltage (-ΔV) detection.  
  - Temperature cutoff (via external thermistor).  
  - Maximum charge time limit (backup safety).  
- **LED Status Indicators:** Charge-in-progress and fault detection.  
- **Input Overvoltage Protection:** Safeguards against excessive input voltage.  
- **Low-Battery Detection:** Prevents charging deeply discharged cells.  
- **Thermal Shutdown:** Protects against overheating.  

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

Application Scenarios & Design Considerations

4-1/2 Digit Single-Chip A/D Converter with LCD Driver

Alternative Part Number

  • ICL7129CPL --: Pin-compatible 4.5-digit LCD display driver with the same function and DIP-40 package; widely available second source.
  • TC7129CPL --: Direct functional equivalent 4.5-digit ADC/display driver in DIP-40, commonly used as a drop-in replacement.
  • ICL7129ACPL --: Same Maxim 7129 series core function with improved accuracy grade, same pinout and package.
  • ICL7135CPI --: Similar 4.5-digit integrating ADC in DIP package; usable substitute when display-drive features are not strictly required, though pinout differs.
  • ICL7135CPL --: Similar 4.5-digit integrating ADC in DIP-40 with comparable resolution and interface, suitable when minor pin/display differences can be accommodated.

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