MAX17823BGCB/V+T - 12-Ch HV Battery Sensor, AEC-Q100 | Analog Devices
MPN： MAX17823BGCB/V+T ✓ 啟用中MAX17823BGCB/V+T 概覽
A battery management IC (BMIC) is a mixed-signal data-acquisition system used in multi-cell lithium-ion battery packs to digitize cell voltages, pack current, and temperature, and to drive cell-balancing switches. In the broader taxonomy, the MAX17823B sits under battery management IC -> power management IC -> analog/mixed-signal IC -> semiconductor. It is one of the few parts that integrates high-voltage front-end analog multiplexers, a precision SAR ADC, cell-balancing FET drivers, and an isolated daisy-chain communication port in a single IC.
Key features include 12-bit SAR ADC with 161 microseconds full-stack conversion time, 12 internal cell-balancing switches supporting up to 150 mA per channel, integrated daisy-chain UART interface for high-voltage isolation up to 3000 V and above, on-chip voltage regulator and reference, and built-in self-test diagnostics for cell-wires, the ADC path, and the balancing switches. The 64-pin LQFP-10x10 package gives a manageable thermal resistance while leaving enough perimeter I/O for the 12 HV cell inputs plus digital, analog, and power pins.
Architecturally, the part uses a high-voltage CMOS process with on-chip level shifters to tolerate the 60 V-plus common-mode voltage of a 12-cell Li-ion stack. The daisy-chain interface uses capacitive isolation, allowing multiple stacked MAX17823B devices to be daisy-chained and read by a single master MCU through a low-voltage UART. This greatly simplifies the BMS layout in series-string battery packs used in EVs and industrial storage.
Typical applications include electric vehicle (EV) battery management systems, hybrid EV pack monitors, industrial lithium-ion energy-storage BMS, e-mobility battery packs (e-bike, e-scooter), and uninterruptible power supply (UPS) battery stacks. The wide operating temperature range and AEC-Q100 qualification also make it suitable for off-road and heavy-machinery battery systems.
When designing with this part, ensure the PCB layout keeps the high-voltage cell-input traces physically separated from low-voltage digital/analog signals, and that the daisy-chain isolation capacitors are sized per the datasheet reference design. Compared with discrete solutions using external ADCs and balancing FETs, the MAX17823B significantly reduces PCB area, BOM cost, and firmware complexity.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet alone, giving engineers a one-stop reference for sourcing, replacement, and design decisions.
直接替換替代品，適用於 MAX17823BGCB/V+T — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MAX17823BGCB/V+T （相同外形與佔位） — 差異在於 ADC Resolution, Battery Chemistry, Function, Interface, Package.
MAX17823BGCBL/V+T
✅ 直接替換📋 參考替代品（不在目錄中）
MAX17823BGCB/V+TGB
✅ 直接替換📋 參考替代品（不在目錄中）
MAX17823BGCB+TCV
✅ 直接替換📋 參考替代品（不在目錄中）
MAX17823BGCB+T
✅ 直接替換📋 參考替代品（不在目錄中）
LTC6811IG-1#3ZZTRPBF
✅ 直接替換聯絡詢價
查看資料表 →MAX17823BGCB/V+T 最大額定值與電氣特性
| 功能 | 12-channel high-voltage battery data-acquisition system |
| Battery Chemistry | Multi-chemistry (Li-ion, LiFePO4, etc.) |
| Number of Cell Channels | 12 |
| Number of Temperature Channels | 2 |
| ADC Resolution | 12-bit SAR |
| Conversion Time (12 cells + 2 temp) | 161 microseconds |
| Cell-Balancing Switches | 12 internal switches |
| Cell-Balancing Current per Channel | 150 mA |
| 介面 | UART daisy-chain (master) + SPI/UART (host MCU) |
| Isolation | Capacitive daisy-chain, supports high-voltage stack isolation |
| 工作溫度範圍 | -40C to +105C |
| 封裝 | 64-LQFP (10x10 mm) |
| 安裝類型 | Surface Mount |
| AEC-Q100 Qualification | Yes |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
MAX17823BGCB/V+T 64-lqfp (10x10 mm) 腳位配置指南
MAX17823BGCB/V+T（64-lqfp (10x10 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： MAX17823BGCB/V+T.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX17823BGCB/V+T 適用於 6 應用s: Electric Vehicle (EV) Traction Battery BMS, Industrial Lithium-Ion Energy Storage BMS, E-Mobility Battery Packs (E-Bike, E-Scooter), Uninterruptible Power Supply (UPS) Battery Stacks, 48 V Mild-Hybrid Battery Systems, Off-Road and Heavy Machinery Battery Packs.
Electric Vehicle (EV) Traction Battery BMS
The MAX17823B's 12-channel 12-bit SAR ADC, 150 mA cell-balancing switches, and AEC-Q100 qualification make it purpose-built for EV traction battery management. It directly digitizes 12 series-connected Li-ion cells plus 2 temperatures in 161 microseconds, fast enough for sub-millisecond fault detection on overvoltage and undervoltage events. The capacitive daisy-chain UART allows multiple MAX17823B devices to be stacked for 24S, 36S, or 48S packs with no external isolators, reducing BOM cost and PCB area in the high-voltage battery enclosure.
推薦
Industrial Lithium-Ion Energy Storage BMS
For grid-tied and behind-the-meter battery energy storage systems (BESS), the MAX17823B delivers the high-voltage tolerance and precision cell monitoring required for 48 V to 400 V battery stacks. The 12-bit SAR ADC and 161 microseconds conversion time support fast protection loops, while the 12 internal balancing switches allow passive balancing without external FETs in cost-sensitive designs. AEC-Q100 screening gives extra margin for the long-lifetime industrial temperature environment (-40C to +105C).
推薦
E-Mobility Battery Packs (E-Bike, E-Scooter)
Compact e-mobility packs in the 36 V to 60 V range map directly to a single MAX17823B device managing 10 to 12 Li-ion cells. The 64-LQFP package is small enough for the constrained battery housing, while the integrated balancing switches eliminate the external FET array that competing solutions require. The daisy-chain UART simplifies communication between the battery management IC and the vehicle controller MCU, reducing wiring harness complexity in two-wheeler applications.
推薦
Uninterruptible Power Supply (UPS) Battery Stacks
In UPS battery cabinets built from long-life VRLA or Li-ion strings, the MAX17823B provides continuous cell monitoring to detect failing cells before they compromise runtime. Its multi-chemistry support means the same design can be deployed across Li-ion and lead-acid product variants, simplifying platform reuse. The 161 microseconds ADC throughput supports cell-health trending without adding latency to the UPS controller loop.
推薦
48 V Mild-Hybrid Battery Systems
48 V mild-hybrid automotive battery packs typically use 12 to 16 Li-ion cells, which a single MAX17823B can monitor directly with 2 cells of headroom for expansion. The AEC-Q100 grade and -40C to +105C operating range are mandatory for under-hood automotive deployment. The capacitive daisy-chain supports clean galvanic isolation across the high-voltage boundary between the battery pack and the 12 V vehicle electrical system.
推薦
Off-Road and Heavy Machinery Battery Packs
Construction, agricultural, and mining machinery increasingly use high-voltage Li-ion battery packs, where the MAX17823B's wide temperature range and AEC-Q100 qualification survive vibration and thermal extremes. The 12 internal balancing switches handle typical pack-balancing currents without external components, reducing harness weight and failure points. The daisy-chain UART lets multiple MAX17823B devices scale to the 96S or higher packs used in large mining trucks and excavators.
推薦
推薦產品摘要
工程參考資料，適用於 MAX17823BGCB/V+T — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MAX17823BGCBL/V+T | MAX17823BGCB/V+TGB | MAX17823BGCB+TCV | MAX17823BGCB+T | LTC6811IG-1#3ZZTRPBF |
|---|---|---|---|---|---|---|
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP - same footprint |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices (formerly Linear Technology) |
| Cell Channels | 12 | 12 | 12 | 12 | 12 | 12 (with -1 addressing variant) |
| ADC Resolution | 12-bit SAR | 12-bit SAR | 12-bit SAR | 12-bit SAR | 12-bit SAR | 12-bit SAR |
| Conversion Time | 161 microseconds (12 cells + 2 temp) | 161 microseconds | 161 microseconds | 161 microseconds | 161 microseconds | ~234 microseconds (slower) |
| Cell-Balancing Switches | 12 internal, 150 mA | 12 internal, 150 mA | 12 internal, 150 mA | 12 internal, 150 mA | 12 internal, 150 mA | 12 internal, ~100 mA (lower) |
| Communication Interface | Capacitive UART daisy-chain | Capacitive UART daisy-chain | Capacitive UART daisy-chain | Capacitive UART daisy-chain | Capacitive UART daisy-chain | isoSPI (different protocol) |
| AEC-Q100 Qualified | Yes (with /V suffix) | Yes | Yes | Yes | No (commercial grade) | Yes (LTC6811 family is AEC-Q100) |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | 0C to +85C (commercial) | -40C to +85C / +125C (variants) |
| Approx. 1k Unit Price (USD) | $6.45 | ~$6.80 | ~$7.10 | ~$6.90 | ~$5.80 | ~$7.20 |
主要差異化特點
- Integrated 12-bit SAR ADC plus 12 balancing switches in a single IC (對比Discrete solutions using external ADCs and balancing FET arrays)
- Capacitive daisy-chain UART eliminates external digital isolators (對比LTC6811IG-1#3ZZTRPBF (uses isoSPI requiring external transformer or capacitor isolation components))
- 161 microseconds full-stack conversion time (對比MAX17854A (newer generation))
設計說明
Keep the high-voltage cell-input traces (C0..C12) physically separated from the low-voltage digital and analog signal traces by at least 3 mm of clearance or by a guard ring connected to the IC's HV ground. The MAX17823B's high-voltage front-end tolerates the stack common-mode voltage, but PCB creepage and clearance rules must still be observed to meet IEC 60950 / IEC 62133 safety isolation requirements between the HV battery stack and the low-voltage host MCU.
The daisy-chain isolation capacitors on the UP/DN ports are not optional - they must be placed and sized per the datasheet reference design (typically 4.7 nF high-voltage ceramic). Omitting or undersizing these capacitors will cause communication failures between stacked MAX17823B devices, especially in long battery enclosures with high common-mode noise from the inverter. Also verify that the bottom device in the daisy chain is configured as the master (default after reset) before initial firmware bring-up.
At 150 mA per channel with all 12 channels balancing simultaneously, internal dissipation in the 64-LQFP is approximately 1.8 W (estimated: 12 x 5 V x 0.15 A x duty, with active balancing). This is within the LQFP's thermal envelope on a 4-layer PCB with a 2 oz copper pour, but for sustained high-duty balancing in hot environments, add thermal vias under the exposed pad or route balancing current through external FETs driven by the same control pins.
合規資訊
RoHS and REACH compliant per Analog Devices product page; AEC-Q100 qualified with the /V suffix; lead-free and halogen-free per the LQFP package datasheet.
