BQ29414PWRG4 - English Editing Encyclopedia Entry

Product Overview

Category

BQ29414PWRG4 belongs to the category of integrated circuits (ICs) and specifically falls under the family of battery protection and authentication ICs.

Use

This product is primarily used for battery protection in various electronic devices, ensuring safe and reliable operation. It provides features such as overvoltage protection, undervoltage protection, and overcurrent protection.

Characteristics

• Overvoltage protection: Prevents damage to the battery by limiting the voltage within a safe range.
• Undervoltage protection: Safeguards against excessive discharge, preventing potential damage to the battery.
• Overcurrent protection: Limits the current flow to prevent overheating and potential hazards.
• Low power consumption: Designed to minimize power consumption, optimizing battery life.
• High accuracy: Provides precise monitoring and control of battery parameters.
• Compact package: Available in a small form factor, suitable for space-constrained applications.

Package and Quantity

The BQ29414PWRG4 is packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package). It is typically sold in reels containing a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 2.5V to 6V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Overvoltage Protection Threshold: Adjustable from 3V to 5.5V
• Undervoltage Protection Threshold: Adjustable from 1.8V to 4.5V
• Overcurrent Detection Threshold: Adjustable from 50mV to 500mV

Pin Configuration

The BQ29414PWRG4 has a total of 20 pins. The pin configuration is as follows:

1. VDD - Power supply input
2. GND - Ground reference
3. SDA - Serial data input/output
4. SCL - Serial clock input
5. ALERT - Open-drain output for fault indication
6. BAT - Battery voltage input
7. VSS - Negative battery terminal
8. VDDP - Positive battery terminal
9. VSSP - Negative pack terminal
10. VDDB - Positive pack terminal
11. VREF - Reference voltage output
12. VREG - Regulated output voltage
13. VCC - Internal regulator input
14. VSSC - Internal regulator ground
15. VDDC - Internal regulator output
16. VSSA - Analog ground
17. VDDA - Analog power supply
18. TS - Temperature sense input
19. NC - No connection
20. NC - No connection

Functional Features

• Overvoltage protection: Monitors the battery voltage and disconnects it from the load when it exceeds the set threshold.
• Undervoltage protection: Cuts off the load from the battery when the voltage drops below the specified threshold, preventing deep discharge.
• Overcurrent detection: Detects excessive current flow and interrupts the circuit to prevent damage to the battery or connected devices.
• Temperature sensing: Allows monitoring of battery temperature, enabling thermal protection mechanisms.
• Communication interface: Supports I2C communication protocol for configuration and status reporting.

Advantages and Disadvantages

Advantages

• Comprehensive battery protection features ensure safe operation.
• Adjustable thresholds allow customization based on specific application requirements.
• Low power consumption extends battery life.
• Compact package size suits space-constrained designs.
• I2C interface enables easy integration and control.

Disadvantages

• Limited to a maximum supply voltage of 6V, which may not be suitable for high-voltage applications.
• Requires additional external components for complete battery protection.

Working Principles

The BQ29414PWRG4 operates by continuously monitoring the battery voltage, current, and temperature. It compares these parameters against user-configurable thresholds to determine if any protection action is required. When a fault condition is detected, such as overvoltage, undervoltage, or overcurrent, the IC disconnects the battery from the load to prevent damage. The I2C interface allows for configuration and status reporting, enhancing system control and diagnostics.

Application Field Plans

The BQ29414PWRG4 finds applications in various electronic devices that utilize rechargeable batteries, including: - Portable consumer electronics (smartphones, tablets, laptops) - Power tools - Electric vehicles - Energy storage systems

Alternative Models

For those seeking alternative options, the following models provide similar functionality to the BQ29414PWRG4: - BQ29412PWRG4 - BQ29413PWRG4 - BQ29415PWRG4

These alternatives can be considered based on specific requirements and compatibility with the target application.