MAX17843ACB - 12-Ch ASIL-D Battery Monitor IC | 64-LQFP | ADI
MPN: MAX17843ACB ✓ Hoạt độngMAX17843ACB Tóm tắt
A battery monitor IC (sometimes called a battery management IC, BMIC, or cell-monitoring ASIC) is a mixed-signal device that continuously measures the voltage of every cell in a stacked battery pack and reports the values to a host microcontroller over an isolation-linked serial interface. The MAX17843 family sits at the top of the battery-management hierarchy: cell monitor -> battery monitor ASIC -> BMS host MCU -> pack-level controller -> vehicle or grid-storage system. ASIL-D readiness means the device is designed to support the highest automotive functional-safety integrity level (per ISO 26262) when paired with a system-level safety architecture.
Key features include support for long-series cell stacks typically up to 12 series cells, an integrated high-voltage front end that can survive high common-mode pack voltages, integrated diagnostics for open-wire and wire-fault detection, and a digital interface (SPI/UART, per datasheet) suited to daisy-chained or transformer-isolated comms. The device is optimized for hybrid-electric and electric-vehicle battery packs, 12V/48V mild-hybrid systems, e-mobility battery modules, and stationary energy-storage battery racks. Improvements over its predecessor (MAX17823) focus on measurement accuracy and additional safety diagnostics.
Designed in a high-voltage BCDMOS process with on-chip level shifting, the MAX17843ACB removes the need for external resistor-divider networks on each cell input and integrates balancing-switch support. The wide 9 V to 65 V (typical) analog supply range covers both 12 V automotive and 48 V mild-hybrid rails. Internally calibrated references and redundancy paths reduce the bill of materials and shrink PCB area in safety-critical battery-management boards.
Typical applications include electric-vehicle traction battery packs (BEV/PHEV), 48 V mild-hybrid battery management, e-scooter and e-bike BMS modules, grid-tied residential energy-storage battery stacks, and industrial multi-cell lithium battery packs. It is also used in backup-battery monitoring for telecom and data-center 48 V plants. For long strings (>12S), multiple devices are daisy-chained along the pack height with digital isolation between modules.
When laying out the cell-input traces, keep each cell-input differential pair short, symmetric, and routed away from the high-voltage switch-bank node. A dedicated ground plane under the analog section and proper isolation barriers between high-voltage pack nodes and low-voltage logic are required to meet ASIL-D system goals. Per the datasheet, leave adequate creepage on the LQFP-64 footprint, and follow the recommended decoupling network (typically 1 uF + 100 nF close to each supply pin).
This page synthesizes current distributor pricing, true drop-in alternatives (verified from the MAX17823 replacement note in the Analog Devices engineering zone), parametric comparison, and practical design notes not collected on the manufacturer product page alone.
Bộ thay thế dễ dàng lắp đặt cho MAX17843ACB — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
MAX17843ACB/V+TCSJ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX17843GCB+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX17854ACB/V+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX17843ACB Thông số kỹ thuật
| Chức năng | 12-channel high-voltage smart battery-monitoring data-acquisition interface |
| Cell Channels | 12 differential cell-voltage channels |
| Cell Voltage Full-Scale Range | 0 V to 5.0 V per cell (usable up to 4.8 V) |
| ADC Resolution | 14-bit SAR with oversampling |
| Pack Common-Mode Voltage | High-voltage switch-bank input (supports long series strings) |
| Series-Cell Support | Optimized for long stacked lithium-ion strings |
| Functional Safety | ASIL-D capable (per ISO 26262, system-level) |
| Communication Interface | SPI/UART-compatible serial link for daisy-chain |
| Nhiệt độ hoạt động | -40C to +125C |
| Hộp | 64-LQFP (10 mm x 10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Process Technology | High-voltage BCDMOS with on-chip level shifting |
| Battery Chemistry | Multi-chemistry (Lithium-ion, LiFePO4, etc.) |
| Wire-Fault Diagnostics | Open-wire and line-fault detection |
| Trạng thái RoHS | Compliant |
| Số chân | 64 |
Hướng dẫn cấu hình chân MAX17843ACB 64-lqfp (10 mm x 10 mm)
Cấu hình chân cho MAX17843ACB (64-lqfp (10 mm x 10 mm) gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho MAX17843ACB.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MAX17843ACB phù hợp cho 6 Áp dụngs: Electric-Vehicle Traction Battery Pack BMS, 48V Mild-Hybrid Battery Management, Stationary Energy-Storage Battery Racks, Industrial Multi-Cell Lithium Battery Packs, E-Mobility Battery Modules (E-Bike / E-Scooter), Telecom and Data-Center 48V Backup Battery Monitoring.
Electric-Vehicle Traction Battery Pack BMS
The MAX17843ACB is purpose-built for electric-vehicle traction packs where 12-cell-per-device monitoring directly drives ASIL-D system-level safety targets. Its 5.0 V full-scale per-cell input covers NMC (4.2 V peak) and LiFePO4 (3.6 V peak) chemistries, while the 14-bit SAR ADC with oversampling yields the accuracy needed for state-of-charge and state-of-health estimation. Placed on a slave BMS module inside the high-voltage pack, the device daisy-chains up the stack to a host MCU through SPI/UART over an isolation barrier, allowing long BEV/PHEV strings (>12S) without external resistor dividers. Its integrated high-voltage switch-bank front end and open-wire diagnostics reduce BOM and PCB area, which is critical for compact module designs.
Được đề xuất
48V Mild-Hybrid Battery Management
In 48V mild-hybrid systems (typically 12S-13S lithium-ion stacks), the MAX17843ACB provides automotive-grade cell monitoring across the full -40C to +125C operating range. The integrated high-voltage analog front end tolerates pack common-mode transients during cranking and regen events, while the 14-bit ADC preserves the millivolt-level accuracy required to balance cells and detect drift across thousands of charge/discharge cycles. Placed near each 12-cell module, the IC links through a transformer-isolated UART daisy chain to the 48V BMS host MCU, simplifying harness and isolation-barrier design. Compared with discrete cell-monitoring op-amp solutions, this IC reduces PCB area, BOM count, and EMC risk.
Được đề xuất
Stationary Energy-Storage Battery Racks
For residential and commercial lithium-ion battery racks (10-100 kWh), the MAX17843ACB delivers ASIL-D-capable monitoring that grid-storage integrators can pair with their pack-level safety controllers. The 12-channel differential inputs map directly onto 12S home-battery modules, while the daisy-chain interface lets installers stack modules up to 60S+ without redesigning the BMS harness. Its built-in open-wire detection alerts operators to failed sense leads before they cause imbalance or fire risk. Used alongside the BMS host MCU and a CAN/Ethernet gateway, the IC provides the per-cell visibility needed for warranty tracking, predictive maintenance, and remote state-of-health monitoring in grid-tied and off-grid storage systems.
Được đề xuất
Industrial Multi-Cell Lithium Battery Packs
Industrial forklift, AGV, and heavy-equipment battery packs (24V-96V nominal) benefit from the MAX17843ACB's rugged automotive-grade qualification. Its -40C to +125C operating range covers harsh factory and outdoor environments, while the integrated diagnostics detect open wires on long sense harnesses that vibrate over years of service. Each device monitors one 12-cell module, and multiple devices daisy-chain up the stack through SPI/UART, allowing the system designer to scale from small AGV packs to large forklift traction packs. Compared with general-purpose ADCs and discrete front ends, this IC cuts design time and helps meet IEC 61508 / ISO 13849 safety goals on industrial lithium battery deployments.
Được đề xuất
E-Mobility Battery Modules (E-Bike / E-Scooter)
High-end e-bike and e-scooter battery packs (typically 10S-13S) need compact, accurate, and ASIL-capable cell monitoring in a small footprint. The MAX17843ACB in 64-LQFP (10x10 mm) integrates the cell-voltage front end and 14-bit ADC, removing the need for external op-amp networks and shrinking the BMS PCB. Its -40C to +125C rating covers outdoor e-mobility use, while the integrated wire-fault diagnostics detect broken sense wires caused by vibration. Combined with a low-cost BMS host MCU, designers can deliver ASIL-D-targeted monitoring in consumer-grade e-mobility products without the BOM overhead of discrete solutions.
Được đề xuất
Telecom and Data-Center 48V Backup Battery Monitoring
Telecom central-office and data-center 48V backup-battery plants (typically 24S lead-acid or 13S-16S lithium) require continuous per-cell monitoring to detect failing cells before they compromise runtime. The MAX17843ACB, with its 5.0 V per-cell full-scale input and 14-bit ADC, provides the accuracy needed to track cell drift across thousands of float cycles. Its ASIL-D capability, while designed for automotive use, also gives data-center operators confidence in cell-level fault detection. The daisy-chain interface links multiple devices up the rack, while the integrated diagnostics alert the BMS host to open wires and ground faults in the long sense harnesses typical of telecom plants.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX17843ACB — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MAX17843ACB/V+TCSJ | MAX17843GCB+ | MAX17854ACB/V+ |
|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Cell Channels | 12 differential | 12 differential | 12 differential | 12 differential |
| Cell Voltage Full-Scale | 5.0 V | 5.0 V | 5.0 V | 5.0 V (refined accuracy) |
| ADC Resolution | 14-bit SAR + oversampling | 14-bit SAR + oversampling | 14-bit SAR + oversampling | 14-bit SAR + oversampling (improved) |
| Functional Safety | ASIL-D capable | ASIL-D capable | ASIL-D capable | ASIL-D capable, enhanced diagnostics |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +125C |
| Series-Cell Coverage (per device) | Up to 12S | Up to 12S | Up to 12S | Up to 12S |
| Communication Interface | SPI/UART daisy-chain | SPI/UART daisy-chain | SPI/UART daisy-chain | SPI/UART daisy-chain |
| RoHS Compliance | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Documented pin-to-pin compatibility with discontinued MAX17823 (vsMAX17823GCB+)
- Newer-generation same-footprint option (vsMAX17854ACB/V+)
- Drop-in alternative supplier code (vsMAX17843ACB/V+TCSJ)
Ghi chú thiết kế
Route each of the 12 differential cell-input pairs as short, symmetric traces with matched lengths, and keep them away from the high-voltage switch-bank node to preserve the 14-bit ADC accuracy. Place the recommended decoupling network (typically 1 uF bulk + 100 nF ceramic close to each supply pin) directly at the IC pins. Maintain adequate creepage on the 64-LQFP (10x10 mm) footprint between high-voltage pack domains and low-voltage logic to meet ASIL-D isolation goals. Reference the official MAX17843 datasheet reference layouts for layer stack-up and guard-ring guidance.
Do not assume the MAX17843ACB and the MAX17854ACB are interchangeable without reviewing the latest datasheets - the MAX17854 is a newer generation with refined accuracy and additional diagnostics. Likewise, the discontinued MAX17823GCB+ is pin-compatible but its register map covers a narrower feature set; reuse MAX17823 firmware only after validating against the MAX17843 datasheet register map. Avoid daisy-chaining more devices than the datasheet recommends for a given transformer-isolation barrier, and never omit the per-cell input RC filters specified in the reference design.
At continuous 12-channel scanning in a sealed automotive pack, the LQFP-64 package can rise noticeably above ambient. Provide a continuous copper pour under the exposed pad area (where present) and on the top layer tied to the IC's ground pin to spread heat. Keep the device away from pack heaters and power-stage MOSFETs, and derate switching frequency if cell count is increased beyond 12S with multiple daisy-chained devices. Reference the MAX17843 datasheet thermal-resistance (theta_JA) values when designing for under-hood EV environments up to +125C.
Thông tin tuân thủ
RoHS compliant per /V+ suffix on the ordering code. AEC-Q100 qualified per Analog Devices product page. ASIL-D capability is system-level (per ISO 26262) and depends on the surrounding BMS architecture. Halogen-free status not explicitly stated in the verified data.
