{"id":7629,"date":"2026-06-26T07:00:22","date_gmt":"2026-06-26T07:00:22","guid":{"rendered":"https:\/\/ic-vendor.com\/bd48k22g-tr\/"},"modified":"2026-06-26T14:12:30","modified_gmt":"2026-06-26T14:12:30","slug":"bd48k22g-tr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/bd48k22g-tr\/","title":{"rendered":"BD48K22G-TR"},"content":{"rendered":"

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

The BD48K22G-TR from ROHM is a standard CMOS voltage detector IC with 2.2V threshold, N-ch open-drain output, 0.9uA IQ in SSOP5.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
Detect Voltage VDET<\/td>\n2.2V<\/td>\n<\/tr>\n
Detect Voltage Accuracy<\/td>\n+\/-1.0%<\/td>\n<\/tr>\n
Supply Current<\/td>\n0.9 uA typical<\/td>\n<\/tr>\n
\u8f93\u51fa\u7c7b\u578b<\/td>\nN-ch open drain<\/td>\n<\/tr>\n
Hysteresis<\/td>\nVDET x 3-8%<\/td>\n<\/tr>\n
Output Delay<\/td>\n100 us max<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSSOP5 (2.9 x 2.8mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +105 C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • +\/-1% high-precision detection voltage<\/li>\n
  • Ultra-low 0.9uA current consumption<\/li>\n
  • N-channel open-drain output<\/li>\n
  • Hysteresis prevents chattering<\/li>\n
  • Small SSOP5 package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Microcontroller reset circuits<\/li>\n
    • Battery voltage monitoring<\/li>\n
    • Power supply monitoring<\/li>\n
    • System power-on reset<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The BD48K22G-TR from ROHM is a standard CMOS voltage detector IC with 2.2V threshold, N-ch open-drain output, 0.9uA IQ in SSOP5. Key Specifications Detect Voltage VDET 2.2V Detect Voltage Accuracy +\/-1.0% Supply Current 0.9 uA typical Output Type N-ch open drain Hysteresis VDET x 3-8% Output Delay 100 us max Package SSOP5 (2.9 […]<\/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":[],"chip_brand":[145],"class_list":["post-7629","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-rohm"],"acf":{"brief_explanation":"CMOS voltage detector, 2.2V, +\/-1%, open-drain, SSOP5","date_code":"","package_case":"SSOP5 (2.90 x 2.80 x 1.25 mm)","in_stock":12000,"datasheet":"https:\/\/fscdn.rohm.com\/en\/products\/databook\/datasheet\/ic\/power\/voltage_detector\/bd48xxg-m-e.pdf","price":"$0.35 @ 1ku","product_introduction":"The BD48K22G-TR from ROHM is a CMOS voltage detector IC with 2.2V detection threshold in SSOP5 package. The K22 suffix encodes the 2.2V threshold voltage. The device features +\/-1% detection voltage accuracy, ultra-low 0.9uA current consumption, and N-channel open-drain output requiring an external pull-up resistor. The built-in hysteresis (3-8% of VDET) prevents output chattering near the threshold. The 100us output delay provides noise immunity against transient voltage dips.","working_principle":"The BD48K22G-TR operates as a precision voltage detector. (1) The input voltage (VDD) is compared against an internal bandgap reference through a resistor divider. When VDD drops below the detection voltage (2.2V), the output transistor turns off, and the open-drain output goes high (via external pull-up) to assert the reset signal. (2) The hysteresis voltage ensures that once the output has switched, VDD must rise by 3-8% above the release voltage before the output returns to its normal state. This prevents oscillation or chattering when VDD hovers near the threshold. (3) The 0.9uA current consumption allows continuous battery monitoring without significant drain. The 100us delay filters out brief voltage dips caused by transient loads, preventing false reset events.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>VOUT<\/td>Reset output (open drain)<\/td><\/tr>
      2<\/td>VDD<\/td>Power supply \/ sense input<\/td><\/tr>
      3<\/td>GND<\/td>Ground<\/td><\/tr>
      4<\/td>NC<\/td>No connect<\/td><\/tr>
      5<\/td>NC<\/td>No connect<\/td><\/tr><\/table>","application_scenarios":"
      • MCU reset circuit with 2.2V threshold and +\/-1% accuracy<\/li>
      • Battery voltage monitoring with 0.9uA current<\/li>
      • Power supply brownout detection with hysteresis<\/li>
      • System power-on reset with 100us noise filter<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        BD48K33G-TR<\/td>ROHM<\/td>3.3V threshold<\/td><\/tr>
        BD49K22G-TR<\/td>ROHM<\/td>CMOS output version<\/td><\/tr>
        TLS850D0TBV33<\/td>Infineon<\/td>3.3V, automotive<\/td><\/tr>
        TPS3809K33DBVR<\/td>TI<\/td>3.3V, SOT-23<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/7629","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=7629"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/7629\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=7629"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=7629"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=7629"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7629"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}