{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS7A0312PDBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS7A0312PDBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS7A0312PDBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS7A0312PDBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS7A0312PDBVR LDO, 1.2V fixed output, 200mA, 300nA quiescent current, 55dB PSRR at 1kHz, SOT-23-5 package, -40°C to 125°C.","salesMarkdown":"## 55 dB PSRR at 1 kHz — the analog supply rail decision The TPS7A0312PDBVR is a 200 mA LDO from Texas Instruments with a fixed 1.2 V output, housed in a SOT-23-5 package. Its 55 dB power-supply rejection ratio at 1 kHz attenuates switching ripple from a preceding buck converter by a factor of about 560 — enough to keep a 10 mVpp switching artifact below 20 µVpp at the output, which matters when this rail feeds an analog front-end or a precision ADC reference. The 300 nA quiescent current is the defining spec for always-on, battery-powered applications. The LDO's own draw sits below the self-discharge rate of a small lithium coin cell, so a sensor node that spends most of its life in sleep mode loses more capacity to the battery's internal chemistry than to the regulator. ## Dropout headroom and thermal envelope Maximum dropout voltage is 0.7 V at the full 200 mA load. The enable pin (active high) allows the system to gate the output when the load is idle, cutting the quiescent current to near zero. Operating junction temperature range is -40°C to 125°C, placing this part in the industrial/automotive temperature band. An engine-bay ECU or an outdoor IoT node that sees 105°C ambient still has 20°C of junction margin at full load, assuming a typical 50°C/W θJA for the SOT-23-5 on a standard two-layer board. ## Protection features and package integration Built-in protection includes over-current, over-temperature, and under-voltage lockout (UVLO). The UVLO threshold prevents the output from turning on until the input rail is high enough to keep the pass element in saturation, avoiding a brown-out condition on the load. The SOT-23-5 footprint (SC-74A) has a 0.95 mm pin pitch — the enable pin sits on pin 3, so the layout must route the enable trace away from the output capacitor's ground return to avoid coupling noise into the feedback path.","metaTitle":"TI TPS7A0312PDBVR LDO, 1.2V Fixed, 200mA, SOT-23-5","metaDescription":"Texas Instruments TPS7A0312PDBVR LDO: 1.2V fixed output, 200mA, 55dB PSRR at 1kHz, 300nA Iq. SOT-23-5 package. Active, ROHS3. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"55dB (1kHz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"200mA","Protection Features":"Over Current, Over Temperature, Under Voltage Lockout (UVLO)","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"6V","Voltage Dropout (Max)":"0.7V @ 200mA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"300 nA","Voltage - Output (Min/Fixed)":"1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.94","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.94000","currency":"USD"},{"qty":10,"price":"$0.83800","currency":"USD"},{"qty":25,"price":"$0.79560","currency":"USD"},{"qty":100,"price":"$0.65340","currency":"USD"},{"qty":250,"price":"$0.61076","currency":"USD"},{"qty":500,"price":"$0.53976","currency":"USD"},{"qty":1000,"price":"$0.42612","currency":"USD"},{"qty":3000,"price":"$0.40200","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/619f97c74ffd6e7d6600a49234e51e8d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TPS7A0312PDBVR at 1 kHz?","answer":"The power-supply rejection ratio is 55 dB at 1 kHz. This means a 1 Vpp ripple on the input is attenuated to roughly 1.8 mVpp at the output at that frequency, assuming the output capacitor and load impedance are within the recommended range."},{"question":"What compliance documentation does Texas Instruments provide for TPS7A0312PDBVR?","answer":"The part is ROHS3 compliant. Texas Instruments provides a material declaration and REACH compliance data on request. No UL or IEC certification is listed for this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS7A0312PDBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS7A0312PDBVR 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}}