NiCd/NiMH Battery Fast-Charge Controllers The MAX712ESE+ is a battery charger controller IC manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Maxim Integrated (MAIXM)
- **Part Number:** MAX712ESE+
- **Package:** 16-SOIC (0.154", 3.90mm Width)
- **Operating Temperature Range:** -40°C to +85°C
- **Supply Voltage:** 4.5V to 28V
- **Battery Chemistry Support:** NiMH (Nickel-Metal Hydride), NiCd (Nickel-Cadmium)
- **Charge Termination Method:** Voltage slope detection (ΔV/Δt), temperature sensing, and timeout
- **Maximum Charge Current:** Programmable up to 4A (external components required)
- **Charge Control:** Fast-charge and trickle-charge modes
- **Topology:** Switch-mode (buck) charger controller
### **Descriptions:**
The MAX712ESE+ is a high-efficiency, switch-mode battery charger controller designed for fast charging of NiMH and NiCd battery packs. It integrates a PWM controller, voltage reference, and charge termination logic to provide a complete charging solution. The device supports multiple charge termination methods, including negative voltage slope detection (ΔV/Δt), temperature monitoring, and a safety timer.
### **Features:**
- **Programmable Charge Current:** Adjustable via external resistor.
- **Multiple Charge Termination Methods:**
- Negative ΔV/Δt detection
- Temperature cutoff
- Maximum charge time limit
- **Switch-Mode Efficiency:** Reduces power dissipation compared to linear chargers.
- **Automatic Trickle Charge:** Maintains battery charge after fast charging.
- **Low Battery Detection:** Prevents charging of deeply discharged cells.
- **Status Outputs:** LED or logic-level outputs for charge status indication.
- **Wide Input Voltage Range:** Supports 4.5V to 28V input.
This information is based solely on the manufacturer's datasheet and technical documentation.
