{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS7A1028PDSER","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS7A1028PDSER","canonicalUrl":"https://icboms.com/texas-instruments/TPS7A1028PDSER","factsUrl":"https://icboms.com/api/mcp/products/TPS7A1028PDSER","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS7A1028PDSER LDO regulator, fixed 2.8V output, 300mA, 6-WFDFN package, ultra-low quiescent current 2.6 µA, active production.","salesMarkdown":"## Active production — 2.6 µA Iq defines the battery-life decision The TPS7A1028PDSER: The headline number for this part isn't the 300 mA output — it's the 2.6 µA quiescent current. That's the current the regulator burns just to stay alive, and at that level it's below the self-discharge rate of a typical lithium coin cell. A sensor node that spends 99% of its time in sleep mode with the LDO enabled will see the battery life limited by the load, not the regulator overhead. ## 90 mV dropout at 300 mA — the headroom rule The maximum dropout voltage is 0.09 V at 300 mA output. The 3.3 V max input voltage confirms this is a low-voltage rail part, not a wide-VIN LDO. ## PSRR profile — where the noise rejection lives PSRR is 60 dB at 1 kHz, dropping to 35 dB at 1.5 MHz. That 60 dB (a factor of 1000) at audio frequencies means 10 mV of input ripple becomes 10 µV at the output — clean enough for an analog front-end. But above a few hundred kHz the rejection rolls off; a switching regulator running at 2 MHz will push ripple through unless the LDO's output capacitor handles the high-frequency bypass. The 35 dB at 1.5 MHz is about 56x attenuation, still useful but not the same margin as at 1 kHz. ## Protection and control — Enable pin, OCP, OTP, UVLO The Enable pin lets the system shut down the LDO entirely, dropping the supply current to near zero — useful for sequencing or power gating a peripheral. Protection features include over-current, over-temperature, and undervoltage lockout (UVLO), so a shorted load or a brownout on the input rail won't damage the regulator or the downstream circuitry. The 9 µA maximum supply current is the total current drawn from the input when the output is unloaded — essentially the quiescent plus any internal bias. The 2.6 µA quiescent is the typical operating current at no load; the difference covers the internal reference and control logic.","metaTitle":"TPS7A1028PDSER LDO, 300mA, 2.8V fixed, ultra-low Iq","metaDescription":"Texas Instruments TPS7A1028PDSER LDO: 300mA output, 2.8V fixed, 2.6 µA quiescent current, 90mV dropout at full load. Active, ROHS3. PSRR 60dB at 1kHz.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"60dB ~ 35dB (1kHz ~ 1.5MHz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"6-WFDFN","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"300mA","Protection Features":"Over Current, Over Temperature, UVLO","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"3.3V","Voltage Dropout (Max)":"0.09V @ 300mA","Current - Supply (Max)":"9 µA","Supplier Device Package":"6-WSON (1.5x1.5)","Current - Quiescent (Iq)":"2.6 µA","Voltage - Output (Min/Fixed)":"2.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.01","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.01000","currency":"USD"},{"qty":10,"price":"$0.90700","currency":"USD"},{"qty":25,"price":"$0.86080","currency":"USD"},{"qty":100,"price":"$0.70700","currency":"USD"},{"qty":250,"price":"$0.66092","currency":"USD"},{"qty":500,"price":"$0.58406","currency":"USD"},{"qty":1000,"price":"$0.46110","currency":"USD"},{"qty":3000,"price":"$0.43500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/91a2070fe9e5a434d35f71b7edd2c4e3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TPS7A1028PDSER at 1 kHz?","answer":"PSRR is 60 dB at 1 kHz, dropping to 35 dB at 1.5 MHz. This means 60 dB of rejection at audio frequencies, with reduced but still useful rejection at higher switching frequencies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS7A1028PDSER","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS7A1028PDSER 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}}