BQ29415PWR

Product Overview

Category

BQ29415PWR belongs to the category of integrated circuits (ICs) and specifically falls under the family of battery protection devices.

Use

This product is primarily used for protecting lithium-ion or lithium-polymer batteries from overcharging, over-discharging, and short-circuiting. It ensures the safe and efficient operation of rechargeable batteries in various electronic devices.

Characteristics

• Overvoltage protection: Prevents the battery voltage from exceeding a safe threshold.
• Undervoltage protection: Safeguards against excessive discharge, preventing damage to the battery.
• Short-circuit protection: Detects and prevents short circuits, ensuring the battery's integrity.
• Low quiescent current: Consumes minimal power during standby mode, optimizing battery life.
• Wide operating temperature range: Can operate reliably in extreme temperature conditions.
• Small package size: The BQ29415PWR comes in a compact package, making it suitable for space-constrained applications.

Package and Quantity

The BQ29415PWR is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels containing 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 Threshold: 4.35V (typical)
• Undervoltage Threshold: 2.5V (typical)
• Short-Circuit Detection Delay: 7ms (typical)

Pin Configuration

The BQ29415PWR has eight pins arranged as follows:

```

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| | --| VDD GND |-- Pin 1: Ground (GND) --| SDA SCL |-- Pin 2: Serial Data (SDA) --| SCD SDO |-- Pin 3: Short-Circuit Detection (SCD) --| VDD GND |-- Pin 4: Ground (GND) --| VDD GND |-- Pin 5: Ground (GND) --| VDD GND |-- Pin 6: Ground (GND) --| VDD GND |-- Pin 7: Ground (GND) --| VDD GND |-- Pin 8: Ground (GND) |___________| ```

Functional Features

• Overvoltage Protection: Monitors the battery voltage and disconnects it from the load when it exceeds the safe threshold.
• Undervoltage Protection: Cuts off the battery supply to prevent excessive discharge, preserving battery life.
• Short-Circuit Detection: Detects short circuits and isolates the battery from the circuit to avoid damage.
• I2C Interface: Allows communication with a microcontroller or host device for configuration and status monitoring.

Advantages and Disadvantages

Advantages

• Comprehensive battery protection against overcharging, over-discharging, and short-circuits.
• Low quiescent current minimizes power consumption during standby mode.
• Wide operating temperature range ensures reliability in various environments.
• Compact package size enables integration into space-constrained applications.

Disadvantages

• Limited to lithium-ion and lithium-polymer battery protection; not suitable for other battery chemistries.
• Requires external microcontroller or host device for configuration and monitoring.

Working Principles

The BQ29415PWR operates by continuously monitoring the battery voltage and comparing it to predefined thresholds. If the voltage exceeds the overvoltage threshold, the device disconnects the battery from the load. Similarly, if the voltage falls below the undervoltage threshold, the battery supply is cut off. In case of a short circuit, the short-circuit detection feature triggers and isolates the battery from the circuit.

Application Field Plans

The BQ29415PWR finds applications in various electronic devices that utilize lithium-ion or lithium-polymer batteries. Some potential application fields include: - Portable consumer electronics (smartphones, tablets, laptops) - Wearable devices (smartwatches, fitness trackers) - Electric vehicles (e-bikes, scooters) - Power tools - Medical devices

Alternative Models

For those seeking alternative options, the following models provide similar functionality to the BQ29415PWR: - BQ29412PWR - BQ29413PWR - BQ29414PWR - BQ29416PWR

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

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