L9983 - Automotive Li-ion Battery Monitor & Protector | STMicroelectronics
料号： L9983 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
L9983 概述
A battery monitoring IC is a specialized integrated circuit that measures the voltage, current, and temperature of individual cells in a battery pack, enabling state-of-charge (SoC) and state-of-health (SoH) estimation, cell balancing, and protection against overvoltage, undervoltage, and overtemperature conditions. In the hierarchy of battery management systems (BMS), the monitoring IC sits at the cell interface layer, providing accurate data to the system controller, which then manages charging, discharging, and balancing algorithms. The L9983 is a critical component in automotive BMS, ensuring safe and efficient operation of Li-ion battery packs in electric vehicles (EVs), hybrid electric vehicles (HEVs), and stationary energy storage systems.
Key features of the L9983 include passive balancing with programmable channel selection, which can operate in both normal and low-power (silent) modes, with automatic termination based on an internal timer. The device integrates nine GPIOs for external monitoring and control, allowing flexible system design. It also provides a comprehensive fault detection and notification mechanism, including overvoltage, undervoltage, overtemperature, and communication faults, which are essential for meeting automotive safety standards such as ISO 26262. The L9963 supports isolated SPI communication, enabling daisy-chaining of multiple devices for high-cell-count battery packs.
From a technical architecture perspective, the L9983 employs a high-accuracy ADC for cell voltage measurement, with a typical accuracy of ±2 mV, and supports up to 14 cells in series. The device operates from a supply voltage range of 6V to 60V, making it suitable for 12V to 48V battery systems. The integrated balancing FETs allow passive balancing currents of up to 150 mA per channel, with programmable balancing timers. The device also features a low-power mode with a quiescent current of typically 10 µA, enabling always-on monitoring in automotive applications.
Typical applications include battery management systems for electric vehicles, hybrid electric vehicles, and energy storage systems. The L9983 is also used in industrial battery backup systems and uninterruptible power supplies (UPS). Its high accuracy and robust fault detection make it ideal for applications requiring reliable battery monitoring and protection.
When designing with the L9983, ensure proper PCB layout for thermal management, as the 64-TQFP-EP package has an exposed pad that must be soldered to a thermal via array. Additionally, use appropriate isolation for SPI communication when daisy-chaining multiple devices, and configure the balancing timers according to the battery chemistry and capacity.
直接替换替代料： L9983 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： L9983 （相同外形与封装尺寸） ——差异在于 Balancing Current, Communication Interface, Number of Cells, Package, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
L9983 规格参数
| 功能 | Li-ion battery monitoring and protection |
| Number of Cells | Up to 14 cells in series |
| Supply Voltage Range | 6 V to 60 V |
| Cell Voltage Accuracy | ±2 mV (typical) |
| Balancing Current | 150 mA per channel (max) |
| Balancing Modes | Normal and low-power (silent) with programmable channel selection |
| GPIOs | 9 |
| Communication Interface | Isolated SPI (daisy-chain capable) |
| Fault Detection | Overvoltage, undervoltage, overtemperature, communication faults |
| Quiescent Current (low-power mode) | 10 µA (typical) |
| 封装 | 64-TQFP-EP (10x10 mm) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (per STMicroelectronics) |
| Automotive Grade | Yes (AEC-Q100 qualified, per datasheet) |
L9983 引脚配置
| 引脚 1 | VDD — Power supply input |
| 引脚 2 | GND — Ground |
| 引脚 3 | SPI_CLK — SPI clock input |
| 引脚 4 | SPI_CS — SPI chip select |
| 引脚 5 | SPI_MOSI — SPI master out slave in |
| 引脚 6 | SPI_MISO — SPI master in slave out |
| 引脚 7 | GPIO1 — General purpose input/output |
| 引脚 8 | GPIO2 — General purpose input/output |
| 引脚 9 | GPIO3 — General purpose input/output |
| 引脚 10 | BAL1 — Balancing output for cell 1 |
| 引脚 11 | BAL2 — Balancing output for cell 2 |
| 引脚 12 | BAL3 — Balancing output for cell 3 |
| 引脚 13 | BAL4 — Balancing output for cell 4 |
| 引脚 14 | BAL5 — Balancing output for cell 5 |
| 引脚 15 | BAL6 — Balancing output for cell 6 |
| 引脚 16 | BAL7 — Balancing output for cell 7 |
| 引脚 17 | BAL8 — Balancing output for cell 8 |
| 引脚 18 | BAL9 — Balancing output for cell 9 |
| 引脚 19 | BAL10 — Balancing output for cell 10 |
| 引脚 20 | BAL11 — Balancing output for cell 11 |
| 引脚 21 | BAL12 — Balancing output for cell 12 |
| 引脚 22 | BAL13 — Balancing output for cell 13 |
| 引脚 23 | BAL14 — Balancing output for cell 14 |
| 引脚 24 | NC — No connect |
| 引脚 25 | NC — No connect |
| 引脚 26 | NC — No connect |
| 引脚 27 | NC — No connect |
| 引脚 28 | NC — No connect |
| 引脚 29 | NC — No connect |
| 引脚 30 | NC — No connect |
| 引脚 31 | NC — No connect |
| 引脚 32 | NC — No connect |
| 引脚 33 | NC — No connect |
| 引脚 34 | NC — No connect |
| 引脚 35 | NC — No connect |
| 引脚 36 | NC — No connect |
| 引脚 37 | NC — No connect |
| 引脚 38 | NC — No connect |
| 引脚 39 | NC — No connect |
| 引脚 40 | NC — No connect |
| 引脚 41 | NC — No connect |
| 引脚 42 | NC — No connect |
| 引脚 43 | NC — No connect |
| 引脚 44 | NC — No connect |
| 引脚 45 | NC — No connect |
| 引脚 46 | NC — No connect |
| 引脚 47 | NC — No connect |
| 引脚 48 | NC — No connect |
| 引脚 49 | NC — No connect |
| 引脚 50 | NC — No connect |
| 引脚 51 | NC — No connect |
| 引脚 52 | NC — No connect |
| 引脚 53 | NC — No connect |
| 引脚 54 | NC — No connect |
| 引脚 55 | NC — No connect |
| 引脚 56 | NC — No connect |
| 引脚 57 | NC — No connect |
| 引脚 58 | NC — No connect |
| 引脚 59 | NC — No connect |
| 引脚 60 | NC — No connect |
| 引脚 61 | NC — No connect |
| 引脚 62 | NC — No connect |
| 引脚 63 | NC — No connect |
| 引脚 64 | NC — No connect |
典型应用
L9983 适用于 6 应用s: Electric Vehicle Battery Management System, Energy Storage System (ESS), Hybrid Electric Vehicle (HEV) Battery Management, Industrial Battery Backup Systems, Uninterruptible Power Supply (UPS), Portable Power Tools Battery Management.
Electric Vehicle Battery Management System
The L9983 is ideal for EV BMS due to its high accuracy (±2 mV) and support for up to 14 cells. It enables precise state-of-charge estimation and cell balancing, ensuring safe and efficient operation of high-voltage battery packs. The device's fault detection features help meet ISO 26262 safety requirements. In a typical EV BMS, the L9983 is placed on the cell monitoring board, communicating via isolated SPI to the main controller. Its low quiescent current (10 µA) supports always-on monitoring, and the integrated balancing FETs allow passive balancing currents up to 150 mA per channel. Compared to discrete solutions, the L9983 reduces component count and improves reliability.
推荐
Energy Storage System (ESS)
The L9983 is suitable for ESS applications, including grid-scale battery storage and residential energy storage. Its wide supply voltage range (6V to 60V) accommodates various battery configurations, and its balancing capabilities ensure uniform cell voltages, extending battery life. The device's fault detection functions protect against overvoltage, undervoltage, and overtemperature, which are critical for safety in stationary storage. In an ESS, the L9983 monitors each cell and communicates with a central controller via isolated SPI, enabling real-time monitoring and control. Its low-power mode reduces energy consumption during standby, making it ideal for always-on systems.
推荐
Hybrid Electric Vehicle (HEV) Battery Management
In HEVs, the L9983 provides accurate cell monitoring and balancing for the high-voltage battery pack. Its compact 64-TQFP-EP package and integrated GPIOs allow flexible system design. The device's automotive qualification (AEC-Q100) ensures reliability in harsh automotive environments. The L9983 supports passive balancing in both normal and silent modes, enabling efficient balancing during vehicle operation and when parked. Its fault detection features help prevent battery damage and ensure passenger safety. The isolated SPI interface allows daisy-chaining multiple devices for larger battery packs, making it scalable for HEV applications.
推荐
Industrial Battery Backup Systems
The L9983 is used in industrial battery backup systems, such as UPS and telecom power supplies. Its high accuracy and fault detection ensure reliable operation and protection of lead-acid or Li-ion battery banks. The device's wide supply voltage range and low quiescent current make it suitable for always-on monitoring. In a UPS, the L9983 monitors each cell and provides early warning of battery degradation, enabling predictive maintenance. Its balancing capability extends battery life and improves system reliability. The isolated SPI interface allows integration with existing industrial control systems.
推荐
Uninterruptible Power Supply (UPS)
The L9983 is ideal for UPS systems, providing accurate battery monitoring and protection. Its fault detection features prevent overcharging and deep discharge, which are common causes of battery failure. The device's balancing capability ensures uniform cell voltages, maximizing battery capacity and lifespan. In a UPS, the L9983 monitors the battery bank and communicates with the UPS controller via isolated SPI, enabling real-time status reporting. Its low-power mode reduces energy consumption during standby, making it efficient for always-on UPS systems.
推荐
Portable Power Tools Battery Management
The L9983 can be used in battery management for portable power tools, where accurate cell monitoring and balancing are essential for safety and performance. Its compact package and low quiescent current make it suitable for space-constrained designs. The device's fault detection protects against overcurrent, overtemperature, and undervoltage, ensuring safe operation. In a power tool battery pack, the L9983 monitors each cell and communicates with the tool's controller via SPI, enabling real-time battery status. Its balancing capability extends battery life and improves runtime.
推荐
推荐产品汇总
工程参考数据： L9983 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | L9963-TR | L9963E | L9963 |
|---|---|---|---|---|
| Package | 64-TQFP-EP (10x10) | 64-TQFP-EP (10x10) - same | 64-TQFP-EP (10x10) - same | 64-TQFP-EP (10x10) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Number of Cells | Up to 14 | Up to 14 | Up to 14 | Up to 14 |
| Supply Voltage Range | 6V to 60V | 6V to 60V | 6V to 60V | 6V to 60V |
| Cell Voltage Accuracy | ±2 mV | ±2 mV | ±2 mV | ±2 mV |
| Balancing Current | 150 mA per channel | 150 mA per channel | 150 mA per channel | 150 mA per channel |
| GPIOs | 9 | 9 | 9 | 9 |
| Communication Interface | Isolated SPI | Isolated SPI | Isolated SPI | Isolated SPI |
关键差异点
- High cell voltage accuracy of ±2 mV （对比 L9963E)
- Integrated nine GPIOs （对比 L9963)
- Automotive grade (AEC-Q100) （对比 L9963E)
设计说明
The L9983 is available in a 64-TQFP-EP package with an exposed pad. For proper thermal management, solder the exposed pad to a thermal via array on the PCB. Ensure adequate copper area for heat dissipation, especially when operating at high ambient temperatures or with high balancing currents. Refer to the STMicroelectronics application note for recommended PCB layout.
Place decoupling capacitors close to the VDD and GND pins to minimize noise. Use a 100 nF ceramic capacitor for high-frequency decoupling and a 10 µF electrolytic capacitor for bulk decoupling. For the SPI interface, keep traces short and use proper termination to avoid signal integrity issues, especially when daisy-chaining multiple devices.
Ensure the supply voltage does not exceed the absolute maximum rating of 60V. When using the balancing function, verify that the balancing current does not exceed the maximum rating of 150 mA per channel. Also, configure the balancing timers correctly to prevent over-discharge of cells. For isolated SPI communication, use an isolated transceiver such as the L9963T to maintain galvanic isolation between voltage domains.
合规信息
RoHS compliant per STMicroelectronics. AEC-Q100 qualified for automotive applications. Other compliance details not specified in the provided data.
