Overview
The BQ296100DSGR is a high-precision, low-power overvoltage protection device manufactured by Texas Instruments. Designed for lithium-ion battery pack applications, this component provides a 2mA regulated output power supply and is capable of monitoring overvoltage conditions for 2 to 4 series-connected battery cells. It features an internal fixed-delay timer that triggers an output pin to indicate an overvoltage condition. The device is housed in a compact WSON-8 package and is suitable for applications such as laptops, ultrabooks, medical devices, and UPS backup batteries.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Manufacturer | Texas Instruments | - | - |
| Product Category | Battery Management | - | - |
| Battery Type | Lithium-ion | - | - |
| Output Voltage | 7 | V | - |
| Output Current | 14 | mA | - |
| Operating Supply Voltage | 3 to 20 | V | - |
| Package / Case | WSON-8 | - | - |
| Mounting Style | SMD/SMT | - | - |
| Series | BQ2961 | - | - |
| Maximum Operating Temperature | +110 | °C | - |
| Minimum Operating Temperature | -40 | °C | - |
| Humidity Sensitivity | Yes | - | - |
| Operating Supply Current | 4 | µA | - |
| Factory Pack Quantity | 3000 | - | - |
| Unit Weight | 9.500 | mg | - |
Key Features
- Overvoltage protection for 2, 3, and 4 series-connected battery cells.
- Fixed-delay timer with options for 3s, 4s, 5.5s, or 6.5s delay.
- Factory-set overvoltage protection thresholds ranging from 3.85V to 4.6V.
- High-precision overvoltage protection with ±10mV accuracy.
- Regulated power output with self-disable and external enable/disable control.
- Low power consumption with ICC ~ 4µA when VCELL(ALL) < VPROTECT.
- Ultra-low power consumption in disabled state with ICC ~ 1.2µA.
- Low leakage current of <100nA per battery input.
- Compact WSON-8 package with 2mm × 2mm footprint.
Applications
The BQ296100DSGR is widely used in various applications including laptops, ultrabooks, medical devices, and UPS backup batteries. Its high-precision overvoltage protection and low power consumption make it ideal for ensuring the safety and longevity of lithium-ion battery packs in these devices. The compact form factor and robust features also make it suitable for portable and space-constrained applications.
Q & A
1. What is the primary function of the BQ296100DSGR?
The BQ296100DSGR is designed to provide overvoltage protection for 2 to 4 series-connected lithium-ion battery cells.
2. What is the operating supply voltage range for this device?
The operating supply voltage ranges from 3V to 20V.
3. What package does the BQ296100DSGR come in?
It is housed in a WSON-8 package.
4. What is the maximum operating temperature for this device?
The maximum operating temperature is +110°C.
5. Does the BQ296100DSGR support external enable/disable control?
Yes, it supports external enable/disable control for the regulated power output.
6. What is the typical power consumption of the BQ296100DSGR?
The typical power consumption is ~4µA when VCELL(ALL) < VPROTECT.
7. What is the factory-set overvoltage protection threshold range?
The factory-set overvoltage protection thresholds range from 3.85V to 4.6V.
8. Is the BQ296100DSGR sensitive to humidity?
Yes, the device is humidity sensitive.
9. What is the output current capability of the regulated power supply?
The regulated power supply can provide up to 2mA of output current.
10. What are some typical applications for the BQ296100DSGR?
Typical applications include laptops, ultrabooks, medical devices, and UPS backup batteries.
