BQ29415PW

Overview

Product Category

BQ29415PW belongs to the category of integrated circuits (ICs) and specifically falls under the family of voltage protection devices.

Use

The BQ29415PW is primarily used for protecting lithium-ion/polymer battery packs from overcharging, over-discharging, and short-circuiting. It acts as a safeguard against potential damage to the battery cells and ensures their longevity.

Characteristics

• Voltage protection range: 2.5V to 4.8V
• Low quiescent current: 10µA (typical)
• High accuracy: ±25mV (typical)
• Small package size: PowerPAD™ TSSOP-16
• Wide operating temperature range: -40°C to +85°C

Package and Quantity

The BQ29415PW is available in a PowerPAD™ TSSOP-16 package. Each package contains one unit of the IC.

Specifications

• Supply voltage range: 2.5V to 4.8V
• Overvoltage threshold: 4.35V (typical)
• Undervoltage threshold: 2.5V (typical)
• Overcurrent detection threshold: 100mV (typical)
• Short-circuit detection delay: 7ms (typical)
• Operating temperature range: -40°C to +85°C

Pin Configuration

The BQ29415PW has a total of 16 pins. The pin configuration is as follows:

1. VDD
2. GND
3. SDA
4. SCL
5. OUT
6. PROTECT
7. BAT
8. VSS
9. VDDP
10. VSSP
11. VREF
12. VCC
13. VSSC
14. VSSC
15. VSSC
16. VSSC

Functional Features

1. Overvoltage Protection: Monitors the battery voltage and disconnects it from the load when it exceeds the preset threshold.
2. Undervoltage Protection: Cuts off the battery supply to prevent deep discharge, which can damage the battery cells.
3. Overcurrent Protection: Detects excessive current flow and interrupts the circuit to avoid overheating or damaging the battery pack.
4. Short-Circuit Protection: Quickly detects short-circuits and isolates the battery from the faulty circuit to prevent further damage.

Advantages and Disadvantages

Advantages

• Wide operating temperature range allows for use in various environments.
• High accuracy ensures precise voltage monitoring and protection.
• Low quiescent current minimizes power consumption.
• Small package size enables space-efficient designs.

Disadvantages

• Limited voltage protection range may not be suitable for all battery types.
• Lack of adjustable thresholds restricts customization options.

Working Principles

The BQ29415PW utilizes a combination of voltage comparators, current sensing circuits, and control logic to monitor the battery's voltage, current, and protect it from potential hazards. It continuously measures the battery parameters and triggers appropriate actions based on the predefined thresholds.

Application Field Plans

The BQ29415PW finds extensive application in various fields, including: - Portable electronic devices (e.g., smartphones, tablets) - Electric vehicles and hybrid electric vehicles - Power banks and portable chargers - Industrial equipment and machinery - Renewable energy systems

Alternative Models

For those seeking alternative models with similar functionality, the following options are available: - BQ29412PW - BQ29413PW - BQ29414PW - BQ29416PW

These alternatives offer comparable features and can be considered based on specific requirements and compatibility.

In conclusion, the BQ29415PW is a voltage protection IC designed to safeguard lithium-ion/polymer battery packs. With its precise monitoring capabilities and comprehensive protection features, it ensures the safe and efficient operation of battery-powered devices across various industries.