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BQ77216

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Voltage and temperature protection for 3-s to 16-s cell Li-ion batteries with internal delay timer

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Data sheet
Voltage and temperature protection for 3-s to 16-s cell Li-ion batteries with internal delay timer

BQ77216

ACTIVE
Data sheet Order now

Product details

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 Overvoltage, Undervoltage, Open wire (OW), Over-temperature (OT), Under-temperature (UT), Stackable, FET drive Typical operating current (Typ) (uA) 1 Rating Catalog Vin (Max) (V) 85 TI functional safety category Functional Safety-Capable
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 Overvoltage, Undervoltage, Open wire (OW), Over-temperature (OT), Under-temperature (UT), Stackable, FET drive Typical operating current (Typ) (uA) 1 Rating Catalog Vin (Max) (V) 85 TI functional safety category Functional Safety-Capable
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TSSOP (PW) 24 34 mm² 7.7 x 4.4
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  • 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
  • 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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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 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).

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Technical documentation

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Type Title Date
* Data sheet BQ77216 Voltage and Temperature Protection for 3-Series to 16-Series Cell Li-Ion Batteries with Internal Delay Timer datasheet (Rev. C) 27 Sep 2021
Functional safety information BQ77216 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 12 Nov 2021
User guide BQ77216EVM User's Guide (Rev. A) 19 Nov 2020
Certificate BQ77216EVM EU Declaration of Conformity (DoC) 29 Jul 2020

Design & development

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

Evaluation board

BQ77216EVM — Voltage and temperature protection for 3-series to 16-series cell Li-ion batteries evaluation module

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 (...)
document-pdfAcrobat User guide
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Reference designs

TIDA-010208 — 10s-16s battery pack reference design with accurate cell measurement and high-side MOSFET control

This reference design is a low standby and ship-mode current consumption and high cell voltage accuracy 10s–16s Lithium-ion (Li-ion), LiFePO4 battery pack design. It monitors each cell voltage, pack current, cell and MOSFET temperature with high accuracy and protects the Li-ion, LiFePO4 (...)
document-pdfAcrobat Schematic
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TSSOP (PW) 24 View options

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

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