{"id":7593,"date":"2026-06-26T06:52:01","date_gmt":"2026-06-26T06:52:01","guid":{"rendered":"https:\/\/materialparts.com\/tlv70033ddcr\/"},"modified":"2026-06-29T09:40:28","modified_gmt":"2026-06-29T09:40:28","slug":"tlv70033ddcr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/tlv70033ddcr\/","title":{"rendered":"TLV70033DDCR"},"content":{"rendered":"

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

The TLV70033DDCR from Texas Instruments is a 200 mA, high-PSRR, low-IQ low-dropout linear regulator with an enable pin. It provides a fixed 3.3V output from a 2.0V to 5.5V input with only 31 uA quiescent current, 68 dB PSRR at 1 kHz, and 175 mV dropout voltage at full load. Stable with only 0.1 uF output capacitance, it comes in a compact SOT-23-5 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Output Voltage<\/td>\n3.3V fixed<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n200 mA<\/td>\n<\/tr>\n
\u8f93\u5165\u7535\u538b<\/td>\n2.0V to 5.5V<\/td>\n<\/tr>\n
Dropout Voltage<\/td>\n85 mV at 100 mA, 175 mV at 200 mA<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n31 uA (typical)<\/td>\n<\/tr>\n
PSRR<\/td>\n68 dB at 1 kHz<\/td>\n<\/tr>\n
Output Noise<\/td>\n48 uVRMS<\/td>\n<\/tr>\n
Accuracy<\/td>\n+\/-2%<\/td>\n<\/tr>\n
Output Capacitor<\/td>\nStable with 0.1 uF effective capacitance<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-5 (DDC), 2.9 x 1.6 mm<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Very low dropout: 43 mV at 50 mA, 175 mV at 200 mA<\/li>\n
  • Low 31 uA quiescent current<\/li>\n
  • High 68 dB PSRR at 1 kHz for noise-sensitive applications<\/li>\n
  • +\/-2% output voltage accuracy<\/li>\n
  • Stable with only 0.1 uF effective output capacitance<\/li>\n
  • Enable pin for power sequencing<\/li>\n
  • Thermal shutdown and overcurrent protection<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Battery-powered handheld devices<\/li>\n
    • RF and wireless module power supply<\/li>\n
    • Portable medical equipment<\/li>\n
    • ADC\/DAC reference voltage regulation<\/li>\n
    • Wearable electronics<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TLV70033DDCR from Texas Instruments is a 200 mA, high-PSRR, low-IQ low-dropout linear regulator with an enable pin. It provides a fixed 3.3V output from a 2.0V to 5.5V input with only 31 uA quiescent current, 68 dB PSRR at 1 kHz, and 175 mV dropout voltage at full load. Stable with only […]<\/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":[13,32],"tags":[],"chip_brand":[138],"class_list":["post-7593","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"200mA LDO, 3.3V fixed, 31uA IQ, 68dB PSRR, SOT-23-5, enable pin","date_code":"","package_case":"SOT-23-5 (DDC) 2.9 x 1.6 mm","in_stock":6506,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tlv700.pdf","price":"$0.081 @ 1ku","product_introduction":"The TLV70033DDCR is a 200 mA low-dropout linear regulator from Texas Instruments designed for power-sensitive portable applications. The device features ultra-low 31 uA quiescent current, excellent line and load transient performance, and very high 68 dB PSRR at 1 kHz. A precision bandgap and error amplifier provides overall +\/-2% accuracy. Low output noise and very high PSRR with minimal input-output headroom make this device ideal for RF-powered portable equipment and as a second-stage regulator following a switching converter. The device is stable with an effective output capacitance of only 0.1 uF, enabling the use of cost-effective capacitors with higher bias voltage derating. All versions include thermal shutdown and current limit for safety.","working_principle":"The TLV70033DDCR uses a PMOS pass transistor to achieve low dropout voltage. When the input-output differential is less than the dropout voltage, the PMOS device operates in the linear region and behaves as a resistor (RDS(on)). The error amplifier compares a fraction of the output voltage (via an internal resistor divider) with an internal bandgap reference and drives the PMOS gate to regulate the output. The enable (EN) pin is active-high and TTL-CMOS compatible; when disabled, the output is turned off. Internal current limit protects the device during fault conditions, and a thermal shutdown circuit disables the output when junction temperature exceeds approximately 160\u00b0C. The device also includes undervoltage lockout (UVLO) to keep the output off until internal circuitry is operating properly.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>IN<\/td>Power<\/td>Input voltage (2.0V to 5.5V)<\/td><\/tr>
      2<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      3<\/td>EN<\/td>Input<\/td>Enable (active high, tie to IN for always-on)<\/td><\/tr>
      4<\/td>NC<\/td>\u2014<\/td>No connect<\/td><\/tr>
      5<\/td>OUT<\/td>Output<\/td>Regulated 3.3V output, up to 200 mA<\/td><\/tr><\/table>","application_scenarios":"
      • RF module power: 68dB PSRR and 48uVRMS noise for clean RF transceiver supply rails<\/li>
      • ADC reference regulation: 2% accuracy and low noise for precision measurement systems<\/li>
      • Wearable devices: 31uA IQ extends battery life in always-on sensor modules<\/li>
      • Portable medical: Low dropout enables regulation from single Li-ion cell to 3.3V<\/li>
      • Second-stage LDO: Cascaded after DC-DC converter for ultra-clean output rail<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TLV71333PDBVR<\/td>SOT-23-5<\/td>150mA, no capacitor required, active discharge<\/td><\/tr>
        TI<\/td>LP5907MFX-3.3<\/td>SOT-23-5<\/td>250mA, 12uA IQ, 90dB PSRR<\/td><\/tr>
        ONsemi<\/td>NCP511SN33T1G<\/td>SOT-23-5<\/td>150mA, 40uA IQ, 3.3V fixed<\/td><\/tr>
        Microchip<\/td>MIC5219-3.3YM5-TR<\/td>SOT-23-5<\/td>500mA, low noise, enable<\/td><\/tr>
        RIC<\/td>RP114N331D-TR-FE<\/td>SOT-23-5<\/td>150mA, 35uA IQ, 3.3V<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7593","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=7593"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7593\/revisions"}],"predecessor-version":[{"id":8694,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7593\/revisions\/8694"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7593"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}