{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLV70243DSET","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TLV70243DSET","canonicalUrl":"https://icboms.com/texas-instruments/TLV70243DSET","factsUrl":"https://icboms.com/api/mcp/products/TLV70243DSET","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TLV70243DSET LDO voltage regulator, fixed 4.3V output, 300mA, 6-WSON (1.5x1.5mm) package, 68dB PSRR at 1kHz, -40°C to 125°C junction temperature.","salesMarkdown":"## Fixed 4.3V rail — the niche that defines the fit The TLV70243DSET is a fixed 4.3 V output LDO from TI's TLV702 family, rated for 300 mA continuous. That output voltage sits between the common 3.3 V and 5.0 V rails — it is not a general-purpose regulator; it is specced into a design that needs exactly 4.3 V, likely to bias an analog front-end or a specific sensor bridge where the 1.2 V headroom above 3.3 V matters for PSRR margin. With a 5.0 V input bus, that is 325 mV of headroom — comfortable for a clean rail, tight if the 5 V bus itself sags under transient load. ## PSRR and quiescent — the analog-rail trade-off PSRR is 68 dB at 1 kHz — this attenuates switching-regulator ripple at the typical 1 MHz fundamental by roughly 30-40 dB (the roll-off is about 20 dB/decade past the unity-gain crossover). For a 10 mVpp ripple on the input, the output sees roughly 3 µVpp at 1 kHz, clean enough for a 12-bit ADC reference or a sensitive analog supply. Below 100 Hz the PSRR is higher, but the real noise threat is the switching frequency band. Quiescent current is 55 µA typical, with a max supply current of 370 µA. For a battery-powered sensor node that spends most of its time in sleep, the 55 µA Iq is the dominant drain — it sets the floor for standby battery life. An always-on 4.3 V rail drawing 55 µA from a 200 mAh coin cell gives about 150 days of standby before the regulator's own consumption drains the cell. ## Protection set and temperature grade The TLV70243DSET integrates over-current, over-temperature, reverse polarity, and under-voltage lockout (UVLO) protection. The UVLO threshold is typically around 1.6 V rising — below that the output is held off, preventing the pass FET from operating in the linear region during a brownout. Reverse polarity protection means a reversed input rail does not damage the regulator (the body diode of the pass FET blocks the reverse current). The 6-WSON package (1.5x1.5 mm) has a thermal pad on the bottom — the datasheet layout recommendation is a 2x2 via array under the pad to the ground plane. Without that thermal via pattern, the effective RθJA rises by roughly 30%, and at 125°C ambient the 300 mA load pushes the junction close to the 150°C abs-max limit.","metaTitle":"TI TLV70243DSET LDO Regulator, 4.3V Fixed Output, 300mA","metaDescription":"Texas Instruments TLV70243DSET LDO, 4.3V fixed output, 300mA, 68dB PSRR at 1kHz, 6-WSON. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"68dB (1kHz)","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, Reverse Polarity, Under Voltage Lockout (UVLO)","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"5.5V","Voltage Dropout (Max)":"0.375V @ 300mA","Current - Supply (Max)":"370 µA","Supplier Device Package":"6-WSON (1.5x1.5)","Current - Quiescent (Iq)":"55 µA","Voltage - Output (Min/Fixed)":"4.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.16","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.16000","currency":"USD"},{"qty":10,"price":"$1.04100","currency":"USD"},{"qty":25,"price":"$0.98840","currency":"USD"},{"qty":100,"price":"$0.81190","currency":"USD"},{"qty":250,"price":"$0.75892","currency":"USD"},{"qty":500,"price":"$0.67066","currency":"USD"},{"qty":1250,"price":"$0.52947","currency":"USD"},{"qty":2500,"price":"$0.49950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7ef0de99df51c04df24f236dfd082829.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TLV70243DSET and why does it matter?","answer":"The PSRR is 68 dB at 1 kHz. This means the regulator attenuates ripple on the input by a factor of about 2500 at that frequency. For a 5 V input rail with 10 mVpp switching ripple, the output sees roughly 4 µVpp at 1 kHz — clean enough to power the analog supply of a 12-bit ADC without adding noise to the conversion result."},{"question":"What package does TLV70243DSET come in?","answer":"The TLV70243DSET is supplied in a 6-WFDFN package, also designated as 6-WSON (1.5x1.5 mm). The supplier device package is 6-WSON (1.5x1.5 mm)."},{"question":"What compliance documentation does Texas Instruments provide for TLV70243DSET?","answer":"Texas Instruments provides ROHS3 compliance certification for the TLV70243DSET. The part is also REACH compliant and carries the standard TI environmental data sheet. No UL or IEC certification is listed in the available documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TLV70243DSET","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TLV70243DSET 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}}