L9983 - Automotive Li-ion Battery Monitor & Protector | STMicroelectronics
MPN: L9983 ✓ AktifL9983 Ringkasan
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.
Alternatif penggantian untuk L9983 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian L9983 (sama faktor bentuk dan footprint) — berbeda di dalam Balancing Current, Communication Interface, Number of Cells, Package, RoHS Status.
L9963-TR
✅ Drop-InKontak untuk harga
Lihat Datasheet →L9963E
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
L9963-TR
✅ Drop-InKontak untuk harga
Lihat Datasheet →L9983 Spesifikasi
| Fungsi | 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) |
| Paket | 64-TQFP-EP (10x10 mm) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant (per STMicroelectronics) |
| Automotive Grade | Yes (AEC-Q100 qualified, per datasheet) |
Konfigurasi Pin L9983
| Pin produk 1 | VDD — Power supply input |
| Pin produk 2 | GND — Ground |
| Pin produk 3 | SPI_CLK — SPI clock input |
| Pin produk 4 | SPI_CS — SPI chip select |
| Pin produk 5 | SPI_MOSI — SPI master out slave in |
| Pin produk 6 | SPI_MISO — SPI master in slave out |
| Pin produk 7 | GPIO1 — General purpose input/output |
| Pin produk 8 | GPIO2 — General purpose input/output |
| Pin produk 9 | GPIO3 — General purpose input/output |
| Pin produk 10 | BAL1 — Balancing output for cell 1 |
| Pin produk 11 | BAL2 — Balancing output for cell 2 |
| Pin produk 12 | BAL3 — Balancing output for cell 3 |
| Pin produk 13 | BAL4 — Balancing output for cell 4 |
| Pin produk 14 | BAL5 — Balancing output for cell 5 |
| Pin produk 15 | BAL6 — Balancing output for cell 6 |
| Pin produk 16 | BAL7 — Balancing output for cell 7 |
| Pin produk 17 | BAL8 — Balancing output for cell 8 |
| Pin produk 18 | BAL9 — Balancing output for cell 9 |
| Pin produk 19 | BAL10 — Balancing output for cell 10 |
| Pin produk 20 | BAL11 — Balancing output for cell 11 |
| Pin produk 21 | BAL12 — Balancing output for cell 12 |
| Pin produk 22 | BAL13 — Balancing output for cell 13 |
| Pin produk 23 | BAL14 — Balancing output for cell 14 |
| Pin produk 24 | NC — No connect |
| Pin produk 25 | NC — No connect |
| Pin produk 26 | NC — No connect |
| Pin produk 27 | NC — No connect |
| Pin produk 28 | NC — No connect |
| Pin produk 29 | NC — No connect |
| Pin produk 30 | NC — No connect |
| Pin produk 31 | NC — No connect |
| Pin produk 32 | NC — No connect |
| Pin produk 33 | NC — No connect |
| Pin produk 34 | NC — No connect |
| Pin produk 35 | NC — No connect |
| Pin produk 36 | NC — No connect |
| Pin produk 37 | NC — No connect |
| Pin produk 38 | NC — No connect |
| Pin produk 39 | NC — No connect |
| Pin produk 40 | NC — No connect |
| Pin produk 41 | NC — No connect |
| Pin produk 42 | NC — No connect |
| Pin produk 43 | NC — No connect |
| Pin produk 44 | NC — No connect |
| Pin produk 45 | NC — No connect |
| Pin produk 46 | NC — No connect |
| Pin produk 47 | NC — No connect |
| Pin produk 48 | NC — No connect |
| Pin produk 49 | NC — No connect |
| Pin produk 50 | NC — No connect |
| Pin produk 51 | NC — No connect |
| Pin produk 52 | NC — No connect |
| Pin produk 53 | NC — No connect |
| Pin produk 54 | NC — No connect |
| Pin produk 55 | NC — No connect |
| Pin produk 56 | NC — No connect |
| Pin produk 57 | NC — No connect |
| Pin produk 58 | NC — No connect |
| Pin produk 59 | NC — No connect |
| Pin produk 60 | NC — No connect |
| Pin produk 61 | NC — No connect |
| Pin produk 62 | NC — No connect |
| Pin produk 63 | NC — No connect |
| Pin produk 64 | NC — No connect |
Aplikasi Umum
L9983 cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk L9983 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- High cell voltage accuracy of ±2 mV (vsL9963E)
- Integrated nine GPIOs (vsL9963)
- Automotive grade (AEC-Q100) (vsL9963E)
Catatan Desain
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.
Informasi Konformitas
RoHS compliant per STMicroelectronics. AEC-Q100 qualified for automotive applications. Other compliance details not specified in the provided data.
