Overview
The BQ2014SN-D120G4 is a battery gas gauge IC produced by Texas Instruments. It is designed for battery-pack or in-system installation to maintain an accurate record of available battery charge. This IC supports NiCd and NiMH battery chemistries and is particularly useful in applications requiring precise battery monitoring and charge control.
The device features a single-wire serial communication port and can directly drive LEDs to display battery capacity. It also includes a charge control output that operates an external charge controller, such as the BQ2004 Fast Charge IC. The BQ2014SN-D120G4 is packaged in a 16-pin narrow SOIC package and operates within a temperature range of 0°C to 70°C.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | BQ2014SN-D120G4 |
| Package/Case | 16-SOIC (0.154", 3.90mm Width) |
| Function | Battery Monitor |
| Battery Chemistry | Multi-Chemistry (NiCd/NiMH) |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount |
| Standby Current | 120µA typical |
| Interface | Single-wire serial communication port |
| Lifecycle Status | Not Recommended for New Designs (NRND) |
Key Features
- Conservative and repeatable measurement of available charge in rechargeable batteries.
- Charge control output operates an external charge controller such as the BQ2004 Fast Charge IC.
- Designed for battery pack integration with low standby current (120µA typical).
- Display capacity via single-wire serial communication port or direct drive of LEDs.
- Measurements compensated for current and temperature.
- Self-discharge compensation using internal temperature sensor.
- User-selectable end-of-discharge threshold.
- Battery voltage, nominal available charge, temperature, etc., available over serial port.
Applications
The BQ2014SN-D120G4 is suitable for various battery-powered devices and systems, including:
- Battery packs for portable electronics.
- Power tools and equipment.
- Electric vehicles and hybrid vehicles.
- Industrial and medical devices requiring precise battery monitoring.
- Any application needing accurate battery charge and discharge tracking.
Q & A
- Q: What is the primary function of the BQ2014SN-D120G4 IC?
A: The primary function of the BQ2014SN-D120G4 is to monitor and gauge the charge level of NiCd and NiMH batteries, providing accurate measurements of available battery charge.
- Q: What type of package does the BQ2014SN-D120G4 come in?
A: The BQ2014SN-D120G4 is packaged in a 16-pin narrow SOIC package.
- Q: What is the operating temperature range of the BQ2014SN-D120G4?
A: The operating temperature range is from 0°C to 70°C.
- Q: Does the BQ2014SN-D120G4 support multiple battery chemistries?
A: Yes, it supports both NiCd and NiMH battery chemistries.
- Q: How does the BQ2014SN-D120G4 compensate for battery temperature and charge/discharge rates?
A: The IC compensates for battery temperature and charge/discharge rates using internal temperature sensors and rate compensation algorithms.
- Q: Can the BQ2014SN-D120G4 be used with external charge controllers?
A: Yes, it includes a charge control output that can operate an external charge controller such as the BQ2004 Fast Charge IC.
- Q: What is the lifecycle status of the BQ2014SN-D120G4?
A: The BQ2014SN-D120G4 is not recommended for new designs (NRND).
- Q: How does the BQ2014SN-D120G4 display battery capacity?
A: The IC can display battery capacity via a single-wire serial communication port or by directly driving LEDs.
- Q: What kind of warranty is typically offered for the BQ2014SN-D120G4?
A: Suppliers often offer a 1-year warranty for the BQ2014SN-D120G4, covering defects in materials and workmanship under normal use.
- Q: How can I ensure the authenticity of the BQ2014SN-D120G4?
A: Ensure you purchase from authorized distributors or suppliers that rigorously test and verify the credentials of original Texas Instruments manufacturers and authorized agents.
