L9983 - Automotive Li-ion Battery Monitor & Protector | STMicroelectronics
N.º da peça: L9983 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para L9983 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com L9983 (mesmo formato e footprint) — diferindo em Balancing Current, Communication Interface, Number of Cells, Package, RoHS Status.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
L9963-TR
✅ Drop-In✓ Em estoque
$8.1 / unidade
Ver ficha técnica →L9963E
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
L9963-TR
✅ Drop-In✓ Em estoque
$8.1 / unidade
Ver ficha técnica →L9983 Especificações
| Função | 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) |
| Encapsulamento | 64-TQFP-EP (10x10 mm) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant (per STMicroelectronics) |
| Automotive Grade | Yes (AEC-Q100 qualified, per datasheet) |
Configuração de pinos do L9983
| Pino 1 | VDD — Power supply input |
| Pino 2 | GND — Ground |
| Pino 3 | SPI_CLK — SPI clock input |
| Pino 4 | SPI_CS — SPI chip select |
| Pino 5 | SPI_MOSI — SPI master out slave in |
| Pino 6 | SPI_MISO — SPI master in slave out |
| Pino 7 | GPIO1 — General purpose input/output |
| Pino 8 | GPIO2 — General purpose input/output |
| Pino 9 | GPIO3 — General purpose input/output |
| Pino 10 | BAL1 — Balancing output for cell 1 |
| Pino 11 | BAL2 — Balancing output for cell 2 |
| Pino 12 | BAL3 — Balancing output for cell 3 |
| Pino 13 | BAL4 — Balancing output for cell 4 |
| Pino 14 | BAL5 — Balancing output for cell 5 |
| Pino 15 | BAL6 — Balancing output for cell 6 |
| Pino 16 | BAL7 — Balancing output for cell 7 |
| Pino 17 | BAL8 — Balancing output for cell 8 |
| Pino 18 | BAL9 — Balancing output for cell 9 |
| Pino 19 | BAL10 — Balancing output for cell 10 |
| Pino 20 | BAL11 — Balancing output for cell 11 |
| Pino 21 | BAL12 — Balancing output for cell 12 |
| Pino 22 | BAL13 — Balancing output for cell 13 |
| Pino 23 | BAL14 — Balancing output for cell 14 |
| Pino 24 | NC — No connect |
| Pino 25 | NC — No connect |
| Pino 26 | NC — No connect |
| Pino 27 | NC — No connect |
| Pino 28 | NC — No connect |
| Pino 29 | NC — No connect |
| Pino 30 | NC — No connect |
| Pino 31 | NC — No connect |
| Pino 32 | NC — No connect |
| Pino 33 | NC — No connect |
| Pino 34 | NC — No connect |
| Pino 35 | NC — No connect |
| Pino 36 | NC — No connect |
| Pino 37 | NC — No connect |
| Pino 38 | NC — No connect |
| Pino 39 | NC — No connect |
| Pino 40 | NC — No connect |
| Pino 41 | NC — No connect |
| Pino 42 | NC — No connect |
| Pino 43 | NC — No connect |
| Pino 44 | NC — No connect |
| Pino 45 | NC — No connect |
| Pino 46 | NC — No connect |
| Pino 47 | NC — No connect |
| Pino 48 | NC — No connect |
| Pino 49 | NC — No connect |
| Pino 50 | NC — No connect |
| Pino 51 | NC — No connect |
| Pino 52 | NC — No connect |
| Pino 53 | NC — No connect |
| Pino 54 | NC — No connect |
| Pino 55 | NC — No connect |
| Pino 56 | NC — No connect |
| Pino 57 | NC — No connect |
| Pino 58 | NC — No connect |
| Pino 59 | NC — No connect |
| Pino 60 | NC — No connect |
| Pino 61 | NC — No connect |
| Pino 62 | NC — No connect |
| Pino 63 | NC — No connect |
| Pino 64 | NC — No connect |
Aplicações típicas
L9983 é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para L9983 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- High cell voltage accuracy of ±2 mV (vs L9963E)
- Integrated nine GPIOs (vs L9963)
- Automotive grade (AEC-Q100) (vs L9963E)
Notas de projeto
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.
Informações de conformidade
RoHS compliant per STMicroelectronics. AEC-Q100 qualified for automotive applications. Other compliance details not specified in the provided data.
