BQ29310PW

Product Overview

Category

BQ29310PW belongs to the category of integrated circuits (ICs) used in battery protection systems.

Use

This product is specifically designed for protecting lithium-ion and lithium-polymer batteries from overcharging, over-discharging, and short-circuiting.

Characteristics

• Integrated circuit for battery protection
• Supports lithium-ion and lithium-polymer batteries
• Protects against overcharging, over-discharging, and short-circuiting
• Low power consumption
• Compact package size
• High reliability

Package

BQ29310PW is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of BQ29310PW lies in its ability to safeguard lithium-ion and lithium-polymer batteries by preventing potential hazards such as overcharging, over-discharging, and short-circuiting.

Packaging/Quantity

BQ29310PW is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.5V to 16V
• Overvoltage Protection Threshold: 4.2V to 4.6V (adjustable)
• Undervoltage Protection Threshold: 2.0V to 3.0V (adjustable)
• Overcurrent Detection Threshold: 50mV to 100mV (adjustable)
• Short-Circuit Detection Delay: 5μs to 20μs (adjustable)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: Serial data input/output
4. SCL: Serial clock input
5. OUT: Open-drain output for fault indication
6. BAT: Battery voltage input
7. VSS: Negative battery terminal
8. VREF: Reference voltage output

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.
• Overcurrent detection: Detects excessive current flow and triggers a protective action.
• Short-circuit detection: Identifies short-circuits and isolates the battery to prevent damage.
• Fault indication: Provides an open-drain output to indicate any detected faults.

Advantages and Disadvantages

Advantages

• Effective protection against overcharging, over-discharging, and short-circuiting
• Adjustable thresholds for customization
• Low power consumption
• Compact package size for space-constrained applications
• High reliability for long-term use

Disadvantages

• Limited compatibility with other battery chemistries
• Requires additional external components for complete battery protection system implementation

Working Principles

BQ29310PW operates by continuously monitoring the battery voltage and current. It compares these values with the user-defined thresholds to determine if any protection action is required. When a fault condition is detected, such as overvoltage, undervoltage, overcurrent, or short-circuit, the IC disconnects the battery from the load to prevent further damage.

Detailed Application Field Plans

BQ29310PW finds extensive application in various fields where lithium-ion and lithium-polymer batteries are used. Some of the key areas include:

1. Portable electronic devices: Smartphones, tablets, laptops, and digital cameras.
2. Electric vehicles: Battery management systems for electric cars, bikes, and scooters.
3. Energy storage systems: Battery protection in solar power systems and backup power supplies.
4. Medical devices: Battery safety in portable medical equipment and implantable devices.
5. Industrial applications: Battery protection for industrial automation, robotics, and remote monitoring systems.

Detailed and Complete Alternative Models

1. BQ29209PW: Similar battery protection IC with adjustable thresholds and fault indication.
2. BQ29412PW: Battery protection IC with additional features like temperature monitoring and cell balancing.
3. BQ29700PW: Advanced battery protection IC with integrated fuel gauge functionality.

These alternative models offer similar functionalities to BQ29310PW and can be considered based on specific application requirements.

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