{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STLQ020C33R","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STLQ020C33R","canonicalUrl":"https://icboms.com/stmicroelectronics/STLQ020C33R","factsUrl":"https://icboms.com/api/mcp/products/STLQ020C33R","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STLQ020C33R, positive fixed-output LDO, 3.3 V, 200 mA, 1 µA quiescent current, SOT-323-5 (SC-70-5), surface-mount, enable pin, over-current and over-temperature protection.","salesMarkdown":"## 3.3 V fixed LDO with 1 µA Iq for always-on rails The STLQ020C33R: Its 1 µA typical quiescent current makes it a fit for battery-powered or always-on domains where the regulator's own draw must stay below the single-digit microamp range to preserve standby life. Maximum supply current is 150 µA across load and temperature — the part does not waste headroom current when the output is lightly loaded, which is the dominant operating condition in a sensor node or a microcontroller keep-alive rail. ## Dropout and PSRR — the two numbers that decide the rail quality Maximum dropout voltage is 0.16 V at 200 mA load — the input rail must stay at least 160 mV above 3.3 V across the full load range, or the output falls out of regulation. A 3.6 V nominal lithium cell sitting at 3.45 V under load still holds margin; a 3.3 V rail fed from a 3.5 V switcher post-filter does not. PSRR measures 52 dB at 100 Hz, rolling to 45 dB at 10 kHz. This means the LDO attenuates 100 Hz ripple (rectifier buzz) by a factor of ~400, but at 10 kHz the attenuation drops to ~180×. Upstream switching noise above 10 kHz passes through more readily — a post-LDO ceramic cap with low ESL helps maintain rejection at higher frequencies. ## SOT-323-5 footprint and temperature grade Packaged in SOT-323-5 (also designated SC-70-5 / SOT-353), the STLQ020C33R occupies a 2.0 mm × 2.1 mm footprint with 0.65 mm pin pitch — a space-constrained layout where every square millimetre counts. The supplier device package is SOT-323-5; the same mechanical outline accepts both Tape & Reel and Cut Tape options for prototyping or production. The 125°C ceiling covers under-hood ambient plus self-heating at 200 mA; derating the output current above 85°C ambient keeps the junction within the limit. ## Protection and compliance Built-in over-current and over-temperature protection — the LDO folds back output current during a fault and shuts down if the die temperature exceeds the thermal limit, then auto-recovers when the fault clears. No external protection diode is needed for the output cap discharge path.","metaTitle":"STLQ020C33R 3.3V 200mA LDO, SOT-323-5, Active","metaDescription":"STLQ020C33R 3.3V fixed-output LDO, 200mA, 1µA quiescent current, 160mV dropout at full load, SOT-323-5, -40 to 125°C. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"52dB ~ 45dB (100Hz ~ 10kHz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"5-TSSOP, SC-70-5, SOT-353","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"200mA","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"5.5V","Voltage Dropout (Max)":"0.16V @ 200mA","Current - Supply (Max)":"150 µA","Supplier Device Package":"SOT-323-5","Current - Quiescent (Iq)":"1 µA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.78","priceTiers":[{"qty":1,"price":"$0.78000","currency":"USD"},{"qty":10,"price":"$0.68400","currency":"USD"},{"qty":25,"price":"$0.64200","currency":"USD"},{"qty":100,"price":"$0.52400","currency":"USD"},{"qty":250,"price":"$0.48676","currency":"USD"},{"qty":500,"price":"$0.41424","currency":"USD"},{"qty":1000,"price":"$0.34195","currency":"USD"},{"qty":3000,"price":"$0.34195","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b513f18d0d1f178bfbf3f63f8c99587e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STLQ020C33R/alternatives.json"},"ai":{"faq":[{"question":"What is the PSRR of STLQ020C33R and why does it matter?","answer":"PSRR is 52 dB at 100 Hz, decreasing to 45 dB at 10 kHz. This means the LDO attenuates 100 Hz mains ripple by a factor of about 400×, but at 10 kHz the attenuation drops to roughly 180×. For a clean analog supply rail, upstream filtering or a post-LDO low-ESR capacitor helps maintain rejection at switching frequencies above 10 kHz."},{"question":"What package options are available for STLQ020C33R?","answer":"The device is supplied in SOT-323-5 (SC-70-5 / SOT-353) surface-mount package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STLQ020C33R","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STLQ020C33R when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}