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BQ77216

ACTIVE

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

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Data sheet

BQ77216

ACTIVE
Data sheet Order now

Product details

Rating Catalog Number of series cells (max) 16 Number of series cells (min) 3 Features FET drive, Open wire (OW), Over-temperature (OT), Overvoltage, Stackable, Under-temperature (UT), Undervoltage Function Protection Operating current (typ) (µA) 1 Vin (max) (V) 85 TI functional safety category Functional Safety-Capable Overvoltage protection 3.6, 3.8, 4.225, 4.25, 4.275, 4.3, 4.325, 4.35 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 3.55 Battery overvoltage protection (max) (V) 5.1
Rating Catalog Number of series cells (max) 16 Number of series cells (min) 3 Features FET drive, Open wire (OW), Over-temperature (OT), Overvoltage, Stackable, Under-temperature (UT), Undervoltage Function Protection Operating current (typ) (µA) 1 Vin (max) (V) 85 TI functional safety category Functional Safety-Capable Overvoltage protection 3.6, 3.8, 4.225, 4.25, 4.275, 4.3, 4.325, 4.35 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 3.55 Battery overvoltage protection (max) (V) 5.1
TSSOP (PW) 24 49.92 mm² 7.8 x 6.4
  • 3-series cell to 16-series cell protection
  • High-accuracy overvoltage protection
    • ± 10mV at 25°C
    • ± 20mV from 0°C to 60°C
  • Overvoltage protection options from 3.55V to 5.1V
  • Undervoltage protection with options from 1.0V to 3.5V
  • Open-wire connection detection
  • Overtemperature protection
  • Undertemperature 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 6V
    • Open drain with the ability to be pulled up externally to VDD
  • Low power consumption ICC ≈ 1µA (VCELL(ALL) < VOV)
  • Low leakage current per cell input < 100nA with open wire detection disabled
  • Package footprint options:
    • Leaded 24-pin TSSOP with 0.65mm lead pitch
  • 3-series cell to 16-series cell protection
  • High-accuracy overvoltage protection
    • ± 10mV at 25°C
    • ± 20mV from 0°C to 60°C
  • Overvoltage protection options from 3.55V to 5.1V
  • Undervoltage protection with options from 1.0V to 3.5V
  • Open-wire connection detection
  • Overtemperature protection
  • Undertemperature 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 6V
    • Open drain with the ability to be pulled up externally to VDD
  • Low power consumption ICC ≈ 1µA (VCELL(ALL) < VOV)
  • Low leakage current per cell input < 100nA with open wire detection disabled
  • Package footprint options:
    • Leaded 24-pin TSSOP with 0.65mm lead pitch

The BQ77216xx family of products provides a range of voltage and temperature monitoring, including overvoltage (OVP), undervoltage (UVP), open wire (OW), undertemperature (UT), 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 undertemperature and overtemperature conditions.

In the BQ77216xx device, an internal delay timer is initiated upon detection of an overvoltage, undervoltage, open-wire,undertemperature, 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).

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 the DOUT and COUT are triggered. For quicker production-line testing, the BQ77216xx device provides a Customer Test Mode (CTM) with greatly reduced delay time.

The BQ77216xx family of products provides a range of voltage and temperature monitoring, including overvoltage (OVP), undervoltage (UVP), open wire (OW), undertemperature (UT), 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 undertemperature and overtemperature conditions.

In the BQ77216xx device, an internal delay timer is initiated upon detection of an overvoltage, undervoltage, open-wire,undertemperature, 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).

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 the DOUT and COUT are triggered. For quicker production-line testing, the BQ77216xx device provides a Customer Test Mode (CTM) with greatly reduced delay time.
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Technical documentation

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* Data sheet BQ77216xx Voltage and Temperature Protection for 3-Series to 16-Series Cell Li-Ion Batteries with Internal Delay Timer datasheet (Rev. L) PDF | HTML 18 Sep 2025
Technical article 페달에 전원 공급 전기 자전거 및 전기 스쿠터를 위한 더 오래 지속되 는 13S, 48V 리튬 이온 배터리 팩 구현 (Rev. A) PDF | HTML 22 May 2024
Technical article 為踏板供電：實現適用於電動自行車與電動機車且續航力更長 的 13S、48-v 鋰離子電池組 (Rev. A) PDF | HTML 21 May 2024
Technical article Power to the pedal: Achieving longer-lasting 13S, 48-V lithium-ion battery packs f (Rev. A) PDF | HTML 16 May 2024
Functional safety information BQ77216 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) PDF | HTML 08 Dec 2021
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 (...)
User guide: PDF
Not available on TI.com
Reference designs

PMP23329 — Bidirectional 10s-16s battery pack reference design with Arm® Cortex® M0+ processor

This reference design measures high cell voltage accuracy for 10s to 16s LiFePO4 battery packs. The reference design consists of a high accuracy battery monitor protector, a gas gauge, a secondary protection device and an M0 to help program and communicate with the other devices. The design (...)
Test report: PDF
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 (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 24 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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