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MAX712 from MAXIM,MAXIM - Dallas Semiconductor

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MAX712

Manufacturer: MAXIM

NiCd/NiMH Battery Fast-Charge Controllers

Partnumber Manufacturer Quantity Availability
MAX712 MAXIM 320 In Stock

Description and Introduction

NiCd/NiMH Battery Fast-Charge Controllers The MAX712 is a fast-charge controller for nickel-cadmium (NiCd) or nickel-metal-hydride (NiMH) batteries manufactured by Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Charge Current:** Adjustable up to 4A  
- **Battery Voltage Detection:** 1 to 16 cells (NiCd/NiMH)  
- **Charge Termination Methods:**  
  - Negative Delta Voltage (ΔV)  
  - Maximum Voltage  
  - Maximum Time  
  - Temperature Cutoff (via external thermistor)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin DIP or SO  

### **Descriptions:**  
The MAX712 is a fully integrated fast-charge controller designed for NiCd and NiMH battery packs. It provides multiple charge termination methods to ensure safe and efficient charging. The device includes a programmable timer, temperature monitoring, and voltage-based termination to prevent overcharging.  

### **Features:**  
- **Fast Charge Control:** Supports up to 4A charging current.  
- **Flexible Termination:** Multiple safety mechanisms (ΔV, max voltage, timer, temperature).  
- **Programmable Timer:** Adjustable charge duration (22 to 264 minutes).  
- **Thermal Protection:** External thermistor input for temperature cutoff.  
- **Low-Power Mode:** Switches to trickle charge after fast charge completion.  
- **LED Status Indicators:** Charge-in-progress and fault detection.  

For detailed application circuits and programming, refer to the official datasheet.

Application Scenarios & Design Considerations

NiCd/NiMH Battery Fast-Charge Controllers

Alternative Part Number

  • BQ2002 --: Fast-charge NiCd/NiMH battery controller with similar charge-termination features, widely available and pin-compatible in function.
  • LT1510 --: Constant-current/constant-voltage battery charger IC that can replace MAX712 in many NiCd/NiMH charging designs with minor external component changes.
  • UC3906 --: Sealed lead-acid battery charger controller offering comparable charge control functions and a well-established alternative for battery charging applications.

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