{"id":3102,"date":"2026-05-30T02:46:34","date_gmt":"2026-05-30T02:46:34","guid":{"rendered":"https:\/\/materialparts.com\/bq76952pfbr\/"},"modified":"2026-05-30T02:46:34","modified_gmt":"2026-05-30T02:46:34","slug":"bq76952pfbr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/bq76952pfbr\/","title":{"rendered":"BQ76952PFBR"},"content":{"rendered":"

Productos<\/h2>\n

The BQ76952PFBR from Texas Instruments is a highly integrated 3-series to 16-series high-accuracy battery monitor and protector for Li-Ion, Li-Polymer, and LiFePO4 battery packs. It features two independent ADCs, high-accuracy cell voltage measurement (<10 mV), coulomb counter with <1 uV offset, autonomous cell balancing, and I2C\/SPI\/HDQ communication in a 48-pin TQFP package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Cell Count<\/td>\n3S to 16S<\/td>\n<\/tr>\n
Cell Chemistry<\/td>\nLi-Ion, Li-Polymer, LiFePO4<\/td>\n<\/tr>\n
Cell Voltage Accuracy<\/td>\n<10 mV typical<\/td>\n<\/tr>\n
Coulomb Counter Offset<\/td>\n<1 uV typical<\/td>\n<\/tr>\n
ADC Channels<\/td>\n2 independent ADCs<\/td>\n<\/tr>\n
Comunicaci\u00f3n<\/td>\n400 kHz I2C, SPI, HDQ<\/td>\n<\/tr>\n
Cell Balancing<\/td>\nAutonomous or host-controlled<\/td>\n<\/tr>\n
Normal Mode Current<\/td>\n286 uA typical<\/td>\n<\/tr>\n
Shutdown Mode Current<\/td>\n1 uA typical<\/td>\n<\/tr>\n
High-Voltage Tolerance<\/td>\n85V on cell connect pins<\/td>\n<\/tr>\n
Paquete<\/td>\nTQFP-48 (7 x 7 mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Integrated charge pump for high-side NFET protection<\/li>\n
  • Comprehensive protection: voltage, temperature, current, diagnostics<\/li>\n
  • Simultaneous current and voltage sampling<\/li>\n
  • Autonomous or host-controlled cell balancing<\/li>\n
  • 9 external thermistor inputs + internal temperature sensor<\/li>\n
  • One-time programmable (OTP) memory for customer configuration<\/li>\n
  • Dual programmable LDOs for external system use<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Electric bicycle and scooter battery packs<\/li>\n
    • Cordless power tools<\/li>\n
    • Energy storage systems<\/li>\n
    • Industrial battery backup units<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The BQ76952PFBR from Texas Instruments is a highly integrated 3-series to 16-series high-accuracy battery monitor and protector for Li-Ion, Li-Polymer, and LiFePO4 battery packs. It features two independent ADCs, high-accuracy cell voltage measurement (<10 mV), coulomb counter with <1 uV offset, autonomous cell balancing, and I2C\/SPI\/HDQ communication in a 48-pin TQFP package. Key […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[138],"class_list":["post-3102","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"3-16S battery monitor\/protector, Li-Ion\/LiFePO4, 2 ADCs, TQFP-48","date_code":"","package_case":"TQFP-48 (7 x 7 x 1.0 mm)","in_stock":2150,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/bq76952.pdf","price":"$2.08 @ 1ku","product_introduction":"The BQ76952PFBR from Texas Instruments is a highly integrated high-accuracy battery monitor and protector designed for 3-series to 16-series Li-Ion, Li-Polymer, and LiFePO4 battery packs. It features two independent ADCs for simultaneous current and voltage sampling, achieving cell voltage measurement accuracy of less than 10 mV typical and coulomb counter input offset of less than 1 uV typical. The device integrates a charge pump for driving high-side NFET protection MOSFETs, enabling autonomous protection without host intervention. Support for up to nine external thermistors plus an internal temperature sensor provides comprehensive thermal monitoring. The integrated OTP memory allows customers to program custom configurations on the production line.","working_principle":"The BQ76952PFBR continuously monitors cell voltages, pack current, and temperatures using its dual ADC architecture. One ADC digitizes cell voltages and GPIO voltages while the other measures coulomb counter current across an external sense resistor, enabling simultaneous voltage and current sampling for accurate state-of-charge calculations. Protection thresholds are programmable via I2C\/SPI\/HDQ registers; when a fault is detected (overvoltage, undervoltage, overcurrent, overtemperature, etc.), the device autonomously drives the protection FETs off via the integrated charge pump. Cell balancing can be performed autonomously based on voltage differences or controlled by the host MCU. The device supports multiple power modes: NORMAL (286 uA), SLEEP (24-41 uA), DEEPSLEEP (9-10 uA), and SHUTDOWN (1 uA) to optimize battery life during storage and operation.","pin_description":"
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1-16<\/td>CELL0-CELL15<\/td>Analog<\/td>Cell voltage measurement inputs<\/td><\/tr>
      17<\/td>VC5<\/td>Power<\/td>Top-of-stack connection<\/td><\/tr>
      18-20<\/td>TS1-TS3<\/td>Analog<\/td>External thermistor inputs<\/td><\/tr>
      21-26<\/td>GPIO0-GPIO5<\/td>I\/O<\/td>General purpose I\/O \/ ADC inputs<\/td><\/tr>
      27<\/td>SRN<\/td>Analog<\/td>Current sense resistor negative<\/td><\/tr>
      28<\/td>SRP<\/td>Analog<\/td>Current sense resistor positive<\/td><\/tr>
      29<\/td>ALERT<\/td>Output<\/td>Alert output for host interrupt<\/td><\/tr>
      30,31<\/td>SDA\/SCL<\/td>I\/O<\/td>I2C data and clock<\/td><\/tr>
      32<\/td>HDQ<\/td>I\/O<\/td>HDQ one-wire communication<\/td><\/tr>
      33<\/td>DDSPI<\/td>I\/O<\/td>SPI data in (daisy chain)<\/td><\/tr>
      34-36<\/td>DDCLK\/DDCS\/DDSO<\/td>I\/O<\/td>SPI clock, chip select, data out<\/td><\/tr>
      37<\/td>REG1<\/td>Output<\/td>LDO 1 output for external use<\/td><\/tr>
      38<\/td>REG2<\/td>Output<\/td>LDO 2 output for external use<\/td><\/tr>
      39,40<\/td>CHG\/DSG<\/td>Output<\/td>Charge\/Discharge FET gate drives<\/td><\/tr>
      41<\/td>PCHG<\/td>Output<\/td>Pre-charge FET gate drive<\/td><\/tr>
      42<\/td>RST_SHUT<\/td>I\/O<\/td>Reset\/Shutdown control<\/td><\/tr><\/table>","application_scenarios":"
      • Electric bicycle and scooter battery management systems<\/li>
      • Cordless power tool battery pack monitoring<\/li>\n
      • Energy storage system (ESS) cell monitoring and protection<\/li>\n
      • Industrial UPS and battery backup unit management<\/li>\n
      • Light electric vehicle (LEV) battery pack systems<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>BQ7695203PFBR<\/td>TQFP-48<\/td>Pre-programmed OTP variant<\/td><\/tr>
        TI<\/td>BQ76940PFBR<\/td>TQFP-48<\/td>9-15S, previous generation<\/td><\/tr>
        TI<\/td>BQ76942PFBR<\/td>TQFP-48<\/td>3-10S variant<\/td><\/tr>
        ADI<\/td>LTC6811IG-1#3ZZPBF<\/td>TQFP-48<\/td>12-cell monitor alternative<\/td><\/tr>
        STMicroelectronics<\/td>L9963E<\/td>TQFP-64<\/td>16-cell battery management IC<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=3102"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3102\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3102"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}