{"id":3723,"date":"2026-06-08T02:23:47","date_gmt":"2026-06-08T02:23:47","guid":{"rendered":"https:\/\/materialparts.com\/bq24070rhlr\/"},"modified":"2026-06-08T02:23:47","modified_gmt":"2026-06-08T02:23:47","slug":"bq24070rhlr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/bq24070rhlr\/","title":{"rendered":"BQ24070RHLR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The BQ24070RHLR from Texas Instruments is a single-chip Li-Ion charge and system power-path management IC with dynamic power-path management (DPPM). It supports up to 2A total current and autonomous power source selection in a 20-pin VQFN (3.5 x 4.5mm) package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
Battery Chemistry<\/td>\nSingle-cell Li-Ion \/ Li-Polymer<\/td>\n<\/tr>\n
Charge Current<\/td>\nUp to 2A (programmable)<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b<\/td>\n4.35V to 16V (AC adapter)<\/td>\n<\/tr>\n
Battery Regulation Voltage<\/td>\n4.2V<\/td>\n<\/tr>\n
System Output Voltage<\/td>\n4.4V (BQ24070)<\/td>\n<\/tr>\n
Power Path Management<\/td>\nDynamic (DPPM)<\/td>\n<\/tr>\n
Power Supplement Mode<\/td>\nYes (battery supplements AC)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to 85 C<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • Integrated dynamic power-path management (DPPM)<\/li>\n
  • Autonomous power source selection (AC adapter or battery)<\/li>\n
  • Power supplement mode for peak loads<\/li>\n
  • Supports up to 2A total current<\/li>\n
  • Thermal regulation for charge control<\/li>\n
  • Charge status outputs for LED or system interface<\/li>\n
  • Reverse current, short-circuit, and thermal protection<\/li>\n
  • Power good status outputs<\/li>\n
  • System runs with absent or defective battery<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • \u4fbf\u643a\u5f0f\u6d88\u8d39\u7535\u5b50\u4ea7\u54c1<\/li>\n
    • Handheld instruments<\/li>\n
    • Portable medical devices<\/li>\n
    • Industrial handheld terminals<\/li>\n
    • Smartphones and tablets<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The BQ24070RHLR from Texas Instruments is a single-chip Li-Ion charge and system power-path management IC with dynamic power-path management (DPPM). It supports up to 2A total current and autonomous power source selection in a 20-pin VQFN (3.5 x 4.5mm) package. Key Specifications Battery Chemistry Single-cell Li-Ion \/ Li-Polymer Charge Current Up to 2A […]<\/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-3723","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-ti"],"acf":{"brief_explanation":"1-cell Li-Ion charger, 2A, DPPM power path, supplement mode, VQFN-20","date_code":"","package_case":"VQFN-20 (3.5 x 4.5 x 0.9 mm)","in_stock":6260,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/bq24070.pdf","price":"$1.40 @ 1ku","product_introduction":"The BQ24070RHLR from Texas Instruments is a highly integrated single-chip Li-Ion linear charger and system power-path management device targeted at space-limited portable applications. It features integrated dynamic power-path management (DPPM) that allows the AC adapter to simultaneously power the system and charge the battery. Autonomous power-source selection between the AC adapter and battery ensures uninterrupted system operation. Power supplement mode enables the battery to supplement the AC input current when the system load exceeds the adapter capability. The device supports up to 2A total current with thermal regulation for charge control. Charge status outputs drive LEDs or interface with the system MCU. Comprehensive protection includes reverse current, short-circuit, and thermal shutdown. The system can run with an absent or defective battery pack, enabling instant-on capability from an external power source even with a deeply discharged battery.","working_principle":"The BQ24070RHLR operates as an integrated battery charger and power-path management controller. Key subsystems include: (1) Dynamic Power-Path Management (DPPM) - monitors the system voltage and dynamically adjusts the charge current to maintain the system rail at the regulated voltage (4.4V); when the system load increases, charge current is reduced to maintain system power; (2) Autonomous Power Selection - an internal multiplexer selects between the AC adapter and battery based on adapter presence; when the adapter is removed, the battery seamlessly powers the system; (3) Linear Charger - a precision linear regulator charges the battery with programmable constant current and constant voltage (4.2V) phases; (4) Power Supplement Mode - when the system load exceeds the AC adapter current limit, the battery supplements the system through an internal FET; (5) Thermal Regulation - reduces charge current when the junction temperature approaches the thermal limit, preventing overheating; (6) Protection - reverse current blocking, short-circuit protection, and thermal shutdown protect all power paths.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>IN<\/td>Power<\/td>AC adapter input (4.35V to 16V)<\/td><\/tr>
      2<\/td>PG<\/td>Output<\/td>Power good status (open-drain)<\/td><\/tr>
      3<\/td>STAT1<\/td>Output<\/td>Charge status output 1<\/td><\/tr>
      4<\/td>STAT2<\/td>Output<\/td>Charge status output 2<\/td><\/tr>
      5<\/td>EN1<\/td>Input<\/td>Charge enable control 1<\/td><\/tr>
      6<\/td>EN2<\/td>Input<\/td>Charge enable control 2<\/td><\/tr>
      7<\/td>ISET<\/td>Input<\/td>Charge current set resistor<\/td><\/tr>
      8<\/td>TS<\/td>Input<\/td>Battery temperature sense (NTC)<\/td><\/tr>
      9<\/td>BAT<\/td>Power<\/td>Battery connection<\/td><\/tr>
      10-11<\/td>OUT<\/td>Power<\/td>System output (4.4V regulated)<\/td><\/tr>
      12-20<\/td>Mixed<\/td>Mixed<\/td>PGND, PAD, CE, DPPM, etc.<\/td><\/tr><\/table>","application_scenarios":"
      • Portable consumer electronics: smartphone and tablet charging with power-path management<\/li>
      • Handheld instruments: battery charging while maintaining system operation<\/li>
      • Portable medical devices: reliable charging with instant-on from external power<\/li>
      • Industrial handheld terminals: power supplement mode for peak current demands<\/li>
      • Portable GPS and navigation: autonomous power source selection for uninterrupted operation<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>BQ24071RHLR<\/td>VQFN-20<\/td>6V system output version<\/td><\/tr>
        TI<\/td>BQ24072RHLR<\/td>VQFN-20<\/td>Similar, with different DPPM threshold<\/td><\/tr>
        Analog Devices<\/td>LTC4162EUFD#PBF<\/td>QFN-28<\/td>Charger + power path, I2C<\/td><\/tr>
        Maxim Integrated<\/td>MAX8903BETI+<\/td>TQFN-28<\/td>2A charger with power path<\/td><\/tr>
        Microchip<\/td>MCP73871T-2CCI\/ML<\/td>QFN-20<\/td>1A charger with power path<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3723","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=3723"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3723\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3723"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3723"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3723"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}