MAX712CSE+T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Battery Charger Controller
• Characteristics: High Efficiency, Low Power Consumption
• Package: 16-Pin Narrow SOIC (Small Outline Integrated Circuit)
• Essence: Regulates and Controls Battery Charging Process
• Packaging/Quantity: Tape and Reel, 2500 Units per Reel

Specifications

• Input Voltage Range: 4.5V to 25V
• Output Voltage Range: 1.25V to 28V
• Maximum Charging Current: 2A
• Operating Temperature Range: -40°C to +85°C
• Shutdown Current: 10µA (typical)

Detailed Pin Configuration

1. VCC: Positive Supply Voltage
2. GND: Ground
3. BAT: Battery Connection
4. TIMER: Timer Capacitor Connection
5. CT: Timing Resistor Connection
6. ISET: Current Sense Resistor Connection
7. PROG: Programming Pin
8. STAT: Status Indicator Output
9. CE: Charge Enable Input
10. TS: Thermal Shutdown Input
11. SRN: Sense Resistor Negative Terminal
12. SRP: Sense Resistor Positive Terminal
13. VREF: Reference Voltage Output
14. VFB: Feedback Voltage Input
15. VSENSE: Voltage Sense Input
16. VOUT: Regulated Output Voltage

Functional Features

• Constant-Current/Constant-Voltage Charging
• Automatic Temperature Compensation
• Programmable Charge Termination
• Overvoltage Protection
• Reverse Battery Protection
• LED Indication for Charging Status
• Thermal Shutdown Protection

Advantages

• High charging efficiency
• Low power consumption
• Wide input voltage range
• Flexible programming options
• Comprehensive protection features
• Compact and easy-to-use package

Disadvantages

• Limited maximum charging current (2A)
• Requires external timing and current sensing components
• Relatively high cost compared to basic charger circuits

Working Principles

The MAX712CSE+T is a battery charger controller IC that utilizes a constant-current/constant-voltage charging algorithm. It regulates the charging process by monitoring the battery voltage, current, and temperature. The IC adjusts the charging current to maintain a constant current until the battery voltage reaches a predetermined threshold. It then switches to a constant voltage mode to prevent overcharging. The MAX712CSE+T also incorporates automatic temperature compensation to optimize charging performance across different temperature ranges.

Detailed Application Field Plans

1. Portable Electronic Devices: The MAX712CSE+T can be used in smartphones, tablets, and other portable devices to provide efficient and safe battery charging.
2. Electric Vehicles: This IC can be employed in electric vehicle charging systems to control the charging process and ensure optimal battery performance.
3. Renewable Energy Systems: The MAX712CSE+T can be integrated into solar-powered systems or wind energy storage systems to regulate the charging of batteries used for energy storage.
4. Industrial Equipment: Battery-powered industrial equipment, such as handheld tools or wireless sensors, can benefit from the precise charging control provided by the MAX712CSE+T.

Detailed and Complete Alternative Models

1. MAX713CPE+: Similar to MAX712CSE+T but available in a 16-pin DIP (Dual Inline Package) instead of SOIC.
2. MAX8903AETI+: Offers additional features like USB On-The-Go (OTG) support and integrated power path management.
3. MCP73871-2CCI/MLI: Provides similar functionality with a lower maximum charging current of 1.5A.

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