مدار مجتمع (آی سی) آی‌سی مدیریت توان (پی‌ام‌آی‌سی) مدیریت باتری (بی‌ام‌اس)

Product Attributes

Introduction

MoLi321XS is an ultra-low power battery analog front-end protection IC designed for 3~18S applications. Specific model variants are as follows: MoLi3210S for 3–10 series; MoLi3214S and MoLi3214S-T for 3–14 series; MoLi3216S for 3–16 series; and MoLi3218S for 3–18 series. The IC integrates voltage, current, and temperature protection, wire-break detection, low-voltage charge inhibit, cell balancing, discharge inhibit during charging, and low-current wake-up functions. A UART communication interface enables real-time readout of voltage, current, and temperature parameters. The built-in EEPROM allows dynamic configuration of protection thresholds and system parameters.

Features

• Overvoltage protection: range 2.5~4.5V, step 5mV, accuracy ±10mV
• Undervoltage protection: range 1.0~3.5V, step 10mV, accuracy ±10mV
• Discharge overcurrent protection 1: range 12~100mV, step 4mV
• Discharge overcurrent protection 2: range 40, 50, 70, 80, 100, 120, 150, 200mV; short-circuit protection threshold configurable as 1.5x or 2x OCD2 threshold
• Charge overcurrent protection: range 3~65mV, step 1mV
• All current protection accuracy: |VSENSE| = 0mV (zero-point error), accuracy ≤50uV
• |VSENSE| ≤ 10mV, accuracy ≤ zero-point error + 2%
• 10mV < |VSENSE| < 100mV, accuracy ≤5%
• Low-voltage charge inhibit protection: range 0.75~2.25V, step 250mV, accuracy ±10mV
• Balancing activation voltage: range 2.0~4.5V, step 20mV, accuracy ±10mV
• Charge high-temperature protection: accuracy ±2℃
• Charge low-temperature protection: accuracy ±2℃
• Discharge high-temperature protection: accuracy ±2℃
• Discharge low-temperature protection: accuracy ±2℃
• Internal die temperature protection threshold: 115℃ ± 10℃
• Charge/discharge status detection: precise charge/discharge status detection (charge detection threshold EEPROM fixed at 1mV, register configurable to 0.5mV or 1mV; discharge detection threshold EEPROM fixed at 2mV, register configurable to 0.5mV, 1mV, 1.5V, or 2mV), refined protection
• Small charge/discharge current wake-up MCU function support
• MOSFET protection: suppresses thermal damage to charge/discharge MOSFET body diodes, high reliability
• Built-in EEPROM, supports 500 erase/write cycles, for configuring protection parameters, cell count selection, and functional requirements
• UART communication: CRC verification support; readable on-chip status information, voltage, current, temperature, and functional configuration
• Built-in 13-bit Σ-Δ ADC
• Discharge overcurrent auto-recovery and latch function
• Balancing function: voltage differential balancing
• Out-of-order power-on support
• CTLD and CTLC controllable CHG and DSG enable
• Low-side control driver
• Wire-break protection
• Operating voltage: range 8~80V
• Operating temperature: range -40~85℃
• Power consumption: Normal (typical) 30uA, Powerdown (typical) 2.5uA
• Package: TSSOP28 (MoLi3210S, MoLi3214S-T), LQFP32L (MoLi3214S, MoLi3216S), and LQFP48L (MoLi3218S)

Applications

Electric bicycles, electric scooters, and electric motorcycles; balance scooters, robotic vacuum cleaners, and drones; power tools, gardening tools, and cleaning tools; backup power supplies, communication energy storage, and home energy storage