BQ29413PW

Overview

Product Category

BQ29413PW belongs to the category of integrated circuits (ICs) specifically designed for battery protection.

Use

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

Characteristics

• Battery voltage monitoring
• Overvoltage protection
• Undervoltage protection
• Overcurrent protection
• Short-circuit protection
• Temperature monitoring

Package

BQ29413PW is available in a small outline package (SOP) with 16 pins.

Essence

The essence of BQ29413PW lies in its ability to safeguard batteries by continuously monitoring their voltage levels and protecting them from various potential risks.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel containing 2500 units.

Specifications

• Supply Voltage: 2.5V to 6V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Overvoltage Threshold: 4.3V to 4.7V (adjustable)
• Undervoltage Threshold: 2.2V to 3.1V (adjustable)
• Overcurrent Threshold: 100mA to 500mA (adjustable)

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. VSS: Negative terminal of the battery
4. VBAT: Positive terminal of the battery
5. VOUT: Output voltage
6. SDA: Serial data input/output
7. SCL: Serial clock input
8. ALERT: Open-drain output for fault indication
9. TS: Temperature sense input
10. NC: No connection
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

1. Battery voltage monitoring: Continuously measures the battery voltage to ensure it remains within safe limits.
2. Overvoltage protection: Automatically disconnects the battery from the load when the voltage exceeds the preset threshold.
3. Undervoltage protection: Cuts off the battery supply when the voltage drops below the specified threshold, preventing deep discharge.
4. Overcurrent protection: Detects excessive current flow and interrupts the circuit to prevent damage to the battery or connected devices.
5. Short-circuit protection: Safeguards against short circuits by rapidly disconnecting the battery from the load.
6. Temperature monitoring: Monitors the battery temperature and triggers appropriate actions if it exceeds the safe operating range.

Advantages and Disadvantages

Advantages

• Comprehensive battery protection features
• Adjustable thresholds for customization
• Low quiescent current consumption
• Compact package size
• Wide operating temperature range

Disadvantages

• Limited pin configuration options
• Requires additional external components for complete battery protection system

Working Principles

BQ29413PW operates by continuously monitoring the battery voltage, current, and temperature. It compares these values with the preset thresholds to determine if any protection action is required. When a fault condition is detected, such as overvoltage, undervoltage, overcurrent, or high temperature, the IC takes appropriate measures to safeguard the battery and connected devices.

Detailed Application Field Plans

BQ29413PW finds applications in various fields where lithium-ion or lithium-polymer batteries are used, including: - Portable electronic devices (e.g., smartphones, tablets) - Wearable devices (e.g., smartwatches, fitness trackers) - Electric vehicles and hybrid electric vehicles - Power banks and battery chargers - Industrial equipment and machinery

Detailed and Complete Alternative Models

1. BQ29412PW: Similar to BQ29413PW, but with a different pin configuration.
2. BQ29414PW: Offers additional features such as cell balancing and fuel gauge functionality.
3. BQ29415PW: Designed for higher voltage battery systems.

These alternative models provide similar battery protection capabilities but may have variations in pin configuration, additional features, or compatibility with specific battery types.

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