BQ2018SN-E1TR vs BQ77910ADBTR
| Part Number |
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| Category | PMIC - Battery Management | PMIC - Battery Management |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC BATTERY PWR MONITOR 8-SOIC | IC BATT PROT LI-ION/POLY 38TSSOP |
| Package | 8-SOIC (0.154", 3.90mm Width) | 38-TFSOP (0.173", 4.40mm Width) |
| Series | Power Minder? | - |
| Interface | HDQ | I²C |
| Operating Temperature | -20°C ~ 70°C (TA) | -25°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 38-TFSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 8-SOIC | 38-TSSOP |
| Function | Battery Monitor | Multi-Function Controller |
| Battery Chemistry | Multi-Chemistry | Lithium-Ion/Polymer |
| Number of Cells | 1 ~ 4 | 4 ~ 10 |
| Fault Protection | - | Over Current, Over Temperature, Over/Under Voltage, Short Circuit |
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1. What is a PMIC battery management system (BMS)?
A battery management system (BMS) is a system used to monitor and manage the health status of batteries, including battery charge and discharge control, voltage and temperature monitoring, balancing protection, etc., to ensure battery safety, extend life and improve performance.
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2. What is the difference between a BMS and a battery charger?
The BMS is responsible for monitoring and managing the safety and health of the battery pack, while the battery charger only provides charging current. The BMS ensures that the battery is not overcharged, over-discharged, and overheated through charge and discharge management.
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3. How does BMS monitor power?
BMS uses voltage, current and temperature sensors to detect battery status in real time, and calculates the remaining power (SoC) through algorithms to help users understand the current available power of the battery.
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4. How to choose a suitable BMS chip?
When selecting a BMS chip, factors such as the number of batteries, charging and discharging current requirements, voltage range, monitoring accuracy, safety protection functions and temperature management should be considered to ensure that it matches the system requirements.
