产品概述
描述
The L9962 is part of a complete battery pack monitoring, balancing, and protection system for Li-Ion and Li-Polymer cells in 4-10 series configurations. The L9962 uses a high precision ADC to provide cell voltage, stack voltage and temperature conversion via external NTC. Voltage monitoring functions are cyclically performed with a programmable loop time. Stack current is also monitored via a high-accuracy CSA, continuously running and also performing Coulomb counting. Cell balancing is available and can be simultaneously activated on all cells. IC configuration and information exchange for SOC/SOH estimation are performed via an I2C peripheral. The IC also integrates a dual pre-driver programmable in both HS/LS configurations for driving pack relays. The L9962 also implements battery pack fuse protection to prevent fire and explosion hazards. A 3.3 V regulator with a high current capability is available for supplying the pack controller and other external circuitry in both standby and normal operation modes. The IC protects the battery pack against over-/undervoltage conditions and monitors for over-/undertemperature. It also features protection against overcurrent (both directions) and short-circuit in discharge events. Safety-relevant configurations can be stored in the internal NVM to avoid re-programming the device at each wake-up.
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所有功能
- 2 μA SHIPMENT - DEEP SLEEP mode current and 2.5 μA standby consumption (with VREG LDO active)
- Integrated 3.3V VREG LDO for supplying MCU and LEDs
- Measurescellvoltage(4 to 10 cells), withover-/undervoltagedetectionaswell asbalanceundervoltageprotection
- 12-bit voltage measurement with maximum error of ±7.5 mV in the [1.5 – 4.5] V range, for -40 °C < TJ < 105 °C
- Measuresstackvoltage,withover/undervoltage detection andplausibilitycheckvs.sumofcells
- Measurespacktemperaturevia NTC, withover-/undertemperaturedetection
- Ratiometric temperature measurement with ±0.8% max. gain error in the [0.2 – VREG] V range, for -40 °C < TJ < 105 °C
- Measuresbatterycurrent,with Coulombcounting,overcurrent(both directions) andshort-circuitin discharge protection.
- 16-bit signed current measurementwith amaximum error of 0.25%, for -40 °C < TJ < 120 °C after customer end of line calibration with a single point
- I2C peripheral for device programming and data transfers over the I2C bus
- Cell balancing supporting up to 70mA per cell
- Dual configurable HS/LS pre-driver for pack relay management
- Pack fuse management
- Embedded NVM for configuration parameters storage with lock functionality
- Highhot-plugrobustness
EDA符号、封装和3D模型
意法半导体 - L9962
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符号
封装
3D模型
质量与可靠性
| 料号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| L9962 | 批量生产 | TQFP 48 7x7x1.0 | 工业 | Ecopack2 | 10 | 2023-05-04T00:00:00.000+02:00 | |
| L9962-TR | 批量生产 | TQFP 48 7x7x1.0 | 工业 | Ecopack2 | 10 | 2023-05-04T00:00:00.000+02:00 |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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样片和购买
| 料号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| L9962-TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| L9962 | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
L9962-TR 批量生产
L9962 批量生产