{"id":9898,"date":"2026-07-06T14:23:37","date_gmt":"2026-07-06T14:23:37","guid":{"rendered":"https:\/\/materialparts.com\/max17048g\/"},"modified":"2026-07-06T14:23:37","modified_gmt":"2026-07-06T14:23:37","slug":"max17048g","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/max17048g\/","title":{"rendered":"MAX17048G+"},"content":{"rendered":"

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

The MAX17048G+ is an ultra-low power 1-cell lithium battery fuel gauge from Analog Devices (formerly Maxim Integrated) using the ModelGauge algorithm to track state-of-charge (SOC) without a current-sense resistor. With 3uA hibernate current and 23uA active current, it provides accurate fuel gauging via I2C interface in a tiny 8-pin TDFN package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Cells Supported<\/td>\n1 cell (Li+)<\/td>\n<\/tr>\n
Algorithm<\/td>\nModelGauge<\/td>\n<\/tr>\n
Voltage Measurement Accuracy<\/td>\n+\/-7.5mV\/cell<\/td>\n<\/tr>\n
Active Supply Current<\/td>\n23uA<\/td>\n<\/tr>\n
Hibernate Current<\/td>\n3uA<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.5V to 4.5V<\/td>\n<\/tr>\n
Interface<\/td>\nI2C<\/td>\n<\/tr>\n
Voltage Resolution<\/td>\n1.25mV\/cell<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n8-pin TDFN (2x2mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +85C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • ModelGauge algorithm eliminates current-sense resistor<\/li>\n
  • 3uA hibernate current, 23uA active<\/li>\n
  • +\/-7.5mV\/cell voltage measurement accuracy<\/li>\n
  • No battery learn cycles required<\/li>\n
  • Automatic hibernate entry\/exit<\/li>\n
  • Configurable alerts (low SOC, voltage, 1% SOC change)<\/li>\n
  • I2C interface for SOC and voltage readout<\/li>\n
  • 2x2mm TDFN package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Smartphones and tablets<\/li>\n
    • Smartwatches and wearables<\/li>\n
    • Bluetooth headsets<\/li>\n
    • Medical devices<\/li>\n
    • Portable instruments<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MAX17048G+ is an ultra-low power 1-cell lithium battery fuel gauge from Analog Devices (formerly Maxim Integrated) using the ModelGauge algorithm to track state-of-charge (SOC) without a current-sense resistor. With 3uA hibernate current and 23uA active current, it provides accurate fuel gauging via I2C interface in a tiny 8-pin TDFN package. Key Specifications […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[1195],"chip_brand":[165],"class_list":["post-9898","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","tag-max17048g","chip_brand-adi"],"acf":{"brief_explanation":"1-cell Li+ fuel gauge, ModelGauge, 3uA hibernate, I2C, TDFN 2x2mm","date_code":"","package_case":"8-pin TDFN (2.0 x 2.0 x 0.75mm)","in_stock":11193,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/MAX17048-MAX17049.pdf","price":"$1.64 @ 1ku","product_introduction":"The MAX17048G+ is an ultra-low power 1-cell lithium battery fuel gauge from Analog Devices using the proprietary ModelGauge algorithm to track battery state-of-charge continuously without a current-sense resistor or battery learn cycles. With 3uA hibernate current and 23uA active current, it automatically enters and exits low-power modes. The I2C interface provides access to SOC, voltage, and rate data. The tiny 2x2mm TDFN package makes it ideal for space-constrained portable devices.","working_principle":"The MAX17048 uses the ModelGauge algorithm which models the lithium-ion battery's open-circuit voltage (OCV) curve. By continuously measuring the cell voltage and comparing it to the OCV model, the device calculates state-of-charge without coulomb counting. This approach eliminates the accumulated errors inherent in traditional coulomb counters and removes the need for a current-sense resistor. The device automatically detects low-current states and enters 3uA hibernate mode while still tracking SOC. Configurable alerts can interrupt the host when battery levels reach critical thresholds.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>CTG<\/td>Input<\/td>Charge\/discharge rate indication<\/td><\/tr>
      2<\/td>ALRT<\/td>Output<\/td>Alert output (active low)<\/td><\/tr>
      3<\/td>GND<\/td>Ground<\/td>Ground reference<\/td><\/tr>
      4<\/td>SDA<\/td>I\/O<\/td>I2C data line<\/td><\/tr>
      5<\/td>SCL<\/td>Input<\/td>I2C clock line<\/td><\/tr>
      6<\/td>VDD<\/td>Power<\/td>Supply voltage (2.5-4.5V)<\/td><\/tr>
      7<\/td>CELL<\/td>Input<\/td>Battery cell voltage input<\/td><\/tr>
      8<\/td>QSTRT<\/td>Input<\/td>Quick-start control<\/td><\/tr><\/table>","application_scenarios":"
      • Smartphone battery fuel gauging<\/li>
      • Smartwatch and wearable battery monitoring<\/li>
      • Bluetooth headset battery status<\/li>
      • Portable medical device battery management<\/li>
      • Wireless speaker battery life indication<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ADI<\/td>MAX17049G+<\/td>TDFN-8<\/td>2-cell version<\/td><\/tr>
        TI<\/td>BQ27421-G1A<\/td>SON-9<\/td>1-cell fuel gauge with coulomb counting<\/td><\/tr>
        ADI<\/td>MAX17048X+<\/td>WLP-8<\/td>Wafer-level package (0.9x1.7mm)<\/td><\/tr>
        Richtek<\/td>RT9428<\/td>WDFN-8<\/td>Battery fuel gauge alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9898","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=9898"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9898\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9898"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}