{"id":6279,"date":"2026-06-12T11:06:02","date_gmt":"2026-06-12T11:06:02","guid":{"rendered":"https:\/\/materialparts.com\/mcz33291legr2\/"},"modified":"2026-06-12T11:06:02","modified_gmt":"2026-06-12T11:06:02","slug":"mcz33291legr2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mcz33291legr2\/","title":{"rendered":"MCZ33291LEGR2"},"content":{"rendered":"

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

The MCZ33291LEGR2 from NXP Semiconductors is an octal serial-input\/power-output driver with fault detection and SPI interface. Designed for automotive and industrial applications, it drives 8 low-side outputs rated at 45V\/500mA per channel with diagnostic feedback via 16-bit SPI.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
Output Channels<\/td>\n8 (low-side)<\/td>\n<\/tr>\n
Output Current per Channel<\/td>\n500 mA (continuous)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n4.5V to 5.5V (logic), up to 45V (output)<\/td>\n<\/tr>\n
Interface<\/td>\nSPI (16-bit, up to 5MHz)<\/td>\n<\/tr>\n
On-Resistance<\/td>\n1.0 Ohm (typical per channel)<\/td>\n<\/tr>\n
Fault Detection<\/td>\nOpen-load, short-to-battery, overtemperature<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to 125 C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nLQFP-32 (7x7mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 8 independent low-side output drivers with fault detection<\/li>\n
  • SPI interface for control and diagnostics<\/li>\n
  • Open-load detection in both ON and OFF states<\/li>\n
  • Over-temperature shutdown with auto-retry<\/li>\n
  • AEC-Q100 qualified for automotive use<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Automotive lamp and solenoid driving<\/li>\n
    • Industrial relay and valve control<\/li>\n
    • Body electronics module<\/li>\n
    • Motor driver pre-drivers<\/li>\n
    • General-purpose power output stages<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MCZ33291LEGR2 from NXP Semiconductors is an octal serial-input\/power-output driver with fault detection and SPI interface. Designed for automotive and industrial applications, it drives 8 low-side outputs rated at 45V\/500mA per channel with diagnostic feedback via 16-bit SPI. Key Specifications Output Channels 8 (low-side) Output Current per Channel 500 mA (continuous) Supply Voltage […]<\/p>\n","protected":false},"author":2,"featured_media":6379,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[36,13],"tags":[],"chip_brand":[168],"class_list":["post-6279","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gate-driver-ics","category-integrated-circuits-ics","chip_brand-nxp"],"acf":{"brief_explanation":"Octal low-side driver, SPI, 45V\/500mA\/ch, fault detection, AEC-Q100, LQFP-32","date_code":"","package_case":"LQFP-32 (7 x 7 x 1.4mm)","in_stock":13558,"datasheet":"https:\/\/www.nxp.com\/docs\/en\/data-sheet\/MC33291.pdf","price":"$2.50 @ 1ku","product_introduction":"The MCZ33291LEGR2 from NXP is an octal serial-input\/power-output driver designed for automotive and industrial control applications. It combines 8 low-side power output stages with a 16-bit SPI interface for control and diagnostic reporting. Each output can drive 500mA continuously at up to 45V, with integrated fault detection for open-load (both ON and OFF states), short-to-battery, and over-temperature conditions. The device is AEC-Q100 qualified and provides comprehensive protection and diagnostic features essential for automotive body electronics.","working_principle":"The MCZ33291LEGR2 operates as an 8-channel low-side driver with integrated diagnostics controlled via SPI. **SPI Interface**: A 16-bit SPI frame is used for both control and status reporting. The first 8 bits control the output states (ON\/OFF for each channel), while the second 8 bits report fault status (open-load, short-circuit, over-temperature). The SPI runs at up to 5MHz for fast control loop response. **Output Drivers**: Each channel is an N-channel MOSFET low-side switch with 1.0 Ohm typical on-resistance. The driver pulls the output to ground when ON, allowing current to flow through the load connected between the supply and the output pin. **Fault Detection**: Open-load detection works in both ON state (insufficient current flow) and OFF state (leakage current detected). Short-to-battery detection identifies when the output is driven high externally. Over-temperature protection shuts down affected channels and reports the fault via SPI. **Watchdog**: An internal watchdog timer disables all outputs if SPI communication is not refreshed within a timeout period, providing a fail-safe mechanism.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>VCC<\/td>Logic supply (4.5-5.5V)<\/td><\/tr>
      2<\/td>CS<\/td>SPI chip select (active low)<\/td><\/tr>
      3<\/td>SCLK<\/td>SPI clock input<\/td><\/tr>
      4<\/td>MOSI<\/td>SPI data input<\/td><\/tr>
      5<\/td>MISO<\/td>SPI data output (diagnostics)<\/td><\/tr>
      6-13<\/td>OUT0-OUT7<\/td>8 power output drivers<\/td><\/tr>
      14<\/td>VPWR<\/td>Output supply (up to 45V)<\/td><\/tr>
      15<\/td>GND<\/td>Ground<\/td><\/tr>
      16<\/td>RST<\/td>Reset input (active low)<\/td><\/tr><\/table>","application_scenarios":"
      • Automotive Lighting: Driving multiple LED lamps and bulbs in body control modules<\/li>
      • Industrial Valves: Controlling solenoid valves in factory automation systems<\/li>
      • Relay Control: Driving 8 relay coils from SPI interface with fault monitoring<\/li>
      • Motor Pre-Drivers: Gate drive pre-amplifiers for motor driver H-bridges<\/li>
      • Building Automation: Multi-zone HVAC damper and valve control<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        MC33996EKR2<\/td>NXP<\/td>16-channel version, similar architecture<\/td><\/tr>
        TPIC6C595DR<\/td>TI<\/td>8-bit shift register, 250mA per output<\/td><\/tr>
        TPL9201RUQR<\/td>TI<\/td>8-ch driver, SPI, 50V\/500mA<\/td><\/tr>
        ULN2803ADW<\/td>TI<\/td>8-ch Darlington, 500mA, no SPI<\/td><\/tr>
        DRV8860ATPY<\/td>TI<\/td>8-ch low-side, SPI, HTSSOP-20<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6279","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=6279"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6279\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/6379"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6279"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}