NCS35011 Series

An ultra−low power protection integrated circuit managing lithium−ion batteries from 3 to 5 cells in series with accurate battery voltage indication up to 5 LED outputs.

Manufacturer: ON Semiconductor

Catalog

An ultra−low power protection integrated circuit managing lithium−ion batteries from 3 to 5 cells in series with accurate battery voltage indication up to 5 LED outputs.

Part	Mounting Type	Battery Chemistry	Supplier Device Package	Package / Case [x]	Package / Case	Package / Case [y]	Operating Temperature [Max]	Operating Temperature [Min]	Number of Cells [Max]	Number of Cells [Min]	Fault Protection	Function
ON Semiconductor NCS35011DTBR2G	Surface Mount	Lithium Ion	16-TSSOP	0.173 in	16-TSSOP	4.4 mm	85 °C	-40 °C	5	3	Over/Under Voltage	Battery Protection

Catalog

An ultra−low power protection integrated circuit managing lithium−ion batteries from 3 to 5 cells in series with accurate battery voltage indication up to 5 LED outputs.

Key Features

• Over−Voltage (OV) and Under−Voltage (UV) Detection

• Protection for 3, 4 and 5 Series Cells

• State of Charge (SoC) Indication with High Voltage Tolerant LED Drivers

• Configurable Fault Outputs (Active High or Low for Push−Pull or Open Drain)

• High−Accuracy Voltage Measurement ±5 mV

• Low Power Consumption Icc = 4 μA

• Input BAT Voltage Range 5 V to 25 V, tolerant to 65 V for Increased Immunity to Surge

• Extended Junction Temperature Range to 125°C

Description

Each cell in the battery pack is monitored for an over−voltage and under−voltage condition.Upon detecting an over−voltage, the ODI pin will assert indicating a fault condition and stay asserted until the fault is cleared. During an under voltage condition, the UDI pin will also assert indicating the fault but will have a pulse width that ispre−set in the protector. Both over and under voltage detections have a hard coded pre−set delay time before fault indication.Pulling the ENB high will start a measurement of the battery pack voltage which will be compared to a pre−set detection threshold table.If a threshold voltage is exceeded the protector will power the corresponding LED to indicate state of charge of the pack.Hardware protection and battery monitoring run autonomously and allows operation without a microcontroller.