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Product details

Parameters

Function Protection Number of series cells (Min) 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Number of series cells (Max) 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 Features Under-voltage (UV), Open wire (OW), Over-voltage (OV), Over-temperature (OT), Under-temperature (UT), FET drive Typical operating current (Typ) (uA) 1 Rating Catalog Vin (Max) (V) 85 open-in-new Find other Battery protectors

Package | Pins | Size

TSSOP (PW) 24 open-in-new Find other Battery protectors

Features

  • 3-series cell to 16-series cell protection
  • High-accuracy over voltage protection
    • ± 10 mV at 25°C
    • ± 20 mV from 0°C to 60°C
  • Overvoltage protection options from 3.55 V to 5.1 V
  • Undervoltage protection with options from 1.0 V to 3.5 V
  • Open-wire connection detection
  • Overtemperature protection
  • Random cell connection
  • Functional safety-capable
  • Fixed internal delay timers
  • Fixed detections thresholds
  • Fixed output drive type for each of COUT and DOUT
    • Active high or active low
    • Active high drive to 6 V
    • Open drain with ability to be pulled up externally to VDD
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)
  • Low leakage current per cell input < 100 nA with open wire detection disabled
  • Package footprint options:
    • Leaded 24-pin TSSOP with 0.65-mm lead pitch

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Description

The BQ77216 family of products provides a range of voltage and temperature monitoring including overvoltage (OVP), undervoltage (UVP), open wire (OW), and overtemperature (OT) protection for li-ion battery pack systems. Each cell is monitored independently for overvoltage, undervoltage, and open-wire conditions. With the addition of an external NTC thermistor, the device can detect overtemperature conditions.

In the BQ77216 device, an internal delay timer is initiated upon detection of an overvoltage, undervoltage, open-wire, or overtemperature condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).

The overvoltage triggers the COUT pin if a fault is detected, and undervoltage triggers the DOUT pin if a fault is detected. If an overtemperature or open-wire fault is detected, then both the DOUT and COUT will be triggered. For quicker production-line testing, the BQ77216 device provides a Customer Test Mode (CTM) with greatly reduced delay time.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet BQ77216 Voltage and Temperature Protection for 3-Series to 16-Series Cell Li-Ion datasheet Aug. 06, 2020
User guide BQ77216EVM User's Guide (Rev. A) Nov. 19, 2020
More literature BQ77216EVM EU Declaration of Conformity (DoC) Jul. 29, 2020

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
79
Description
The BQ77216EVM evaluation module (EVM) is a complete evaluation system for the BQ77216, a 3-cell to 16-
cell li-ion battery protection integrated circuit. The circuit module includes one BQ77216 integrated
circuit (IC), thermistor, and cell simulation resistors to provide a complete evaluation system (...)
Features
  • 3-series to 16-series lithium-ion protector with over-voltage, under-voltage, over-temperature and open-wire protections
  • Terminal blocks for input connection
  • Active high and open drain low outputs for evaluation
  • This circuit is tested and includes a getting started guide

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 24 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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