ML5236 Datasheet | LAPIS

Description The ML5236 is an analog front-end IC intended for 14-cell Li-ion rechargeable battery protection systems. With integrated individual cell voltage monitor and charge/discharge current monitor functions, it protects cell overvoltage, cell undervoltage, and pack over-current working with an external microcontroller (MCU). Also, it is equipped with the short-circuit protection function, which autonomously turns off the external charge/discharge Nch-FETs on the high-side power rail without the external MCU. - Features - 5- to 14-cell high-precision cell voltage measurement function Built-in 12-bit successive approximation type ADC Cell voltage measurement precision: ±10m V (typ) at cell voltage 4V Cell voltage measurement time: 2ms per cell (typ) - Charge/discharge current measurement function The potential differential between the ISP and ISM pins amplified by 12- or 60-fold, then digitized with the 12-bit ADC. (A single ADC module is shared in cell voltage measurement and pack current measurement.) - Short-circuit protection function Variable detection threshold between ISP and ISM pins: 50m V/100m V/150m V/200m V (typ) Detection delay time adjustable using an external capacitor - Built-in cell balancing switch on each cell: Switch ON resistance 6 (typ) - External charge/discharge FET control: Built-in gate driver for highside Nch-FET - Temperature sensor measurement function: Two thermistor inputs - Overvoltage protection function: Overvoltage protection tripped by paring each A/D converted cell voltage value with the detection threshold defined in the control register - MCU interface: SPI serial interface (mode 0) Dedicated power supply pin VSPI allows 5V interface - Built-in 3.3V regulator for an external MCU: 10m A (max) output current Current boost circuitry configurable with an external Pch-FET - Low current consumption Normal operation Power-save Power-down : 330A(typ), 700A (max) : 120A(typ), 200A (max) : 0.1A(typ), 1A(max) - Power...