{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS73118MDBVREP","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS73118MDBVREP","canonicalUrl":"https://icboms.com/texas-instruments/TPS73118MDBVREP","factsUrl":"https://icboms.com/api/mcp/products/TPS73118MDBVREP","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS73118MDBVREP LDO linear regulator, 1.8V fixed output, 150mA, 0.1V dropout, SOT-23-5 package, -55°C to 125°C operating range.","salesMarkdown":"## 1.8 V fixed rail for precision analog and sensor supplies The Texas Instruments TPS73118MDBVREP is a 150 mA low-dropout linear regulator with a fixed 1.8 V output, packaged in a SOT-23-5 footprint. It delivers a clean, regulated rail for noise-sensitive loads like ADC references, sensor front-ends, and low-voltage digital cores that cannot tolerate the ripple from a switching converter. The 0.1 V maximum dropout at 150 mA means the input rail can sit as low as 1.9 V and still maintain regulation — useful when the supply is a battery near end-of-discharge or a lightly loaded 2.5 V bus. The 550 µA quiescent current and 750 µA max supply current keep the LDO's own draw low enough for always-on domains in battery-powered equipment. ## PSRR profile and noise rejection across frequency Power-supply rejection ratio is specified at 58 dB at 100 Hz, rolling off to 37 dB at 10 kHz. This means the LDO attenuates 100 Hz ripple — from a mains-derived rectifier or a 100 kHz switching converter's fundamental — by roughly 58 dB and 37 dB respectively. For a 10 mVpp ripple on the input at 1 kHz, less than 20 µVpp passes to the output, which is clean enough for a 12-bit ADC reference rail without additional post-filtering. The -55°C to 125°C operating temperature range covers military and industrial environments — avionics, downhole instrumentation, and engine-bay electronics where the ambient swings beyond commercial limits. The protection features — over-current, over-temperature, short-circuit, and reverse polarity — guard against fault conditions on the output or input without latching up or damaging the regulator. ## SOT-23-5 footprint and board integration The SOT-23-5 (SC-74A) package occupies roughly 3 mm × 3 mm on the board, with a 0.95 mm pin pitch. The enable pin (active-high) allows the regulator to be shut down to near-zero quiescent current for power gating in multi-rail systems. Surface-mount assembly with standard reflow profiles; no special handling beyond the usual MSL precautions for a plastic-encapsulated device.","metaTitle":"TPS73118MDBVREP LDO 1.8V 150mA SOT-23-5","metaDescription":"Texas Instruments TPS73118MDBVREP LDO, 1.8V fixed output, 150mA, 0.1V dropout, -55°C to 125°C, SOT-23-5. Active production, ROHS3 compliant. 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":"58dB ~ 37dB (100Hz ~ 10kHz)","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":"150mA","Protection Features":"Over Current, Over Temperature, Short Circuit, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-55°C ~ 125°C","Voltage - Input (Max)":"5.5V","Voltage Dropout (Max)":"0.1V @ 150mA","Current - Supply (Max)":"750 µA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"550 µA","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.46","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.46000","currency":"USD"},{"qty":10,"price":"$3.10800","currency":"USD"},{"qty":25,"price":"$2.93840","currency":"USD"},{"qty":100,"price":"$2.54650","currency":"USD"},{"qty":250,"price":"$2.41596","currency":"USD"},{"qty":500,"price":"$2.16782","currency":"USD"},{"qty":1000,"price":"$1.84800","currency":"USD"},{"qty":3000,"price":"$1.84800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e3a6d49cb337cb6c42a0516ee130d7f4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TPS73118MDBVREP and why does it matter?","answer":"PSRR is 58 dB at 100 Hz and 37 dB at 10 kHz. This means the LDO attenuates low-frequency ripple from a mains rectifier by about 800× and higher-frequency switching noise by about 70×. For a 10 mVpp input ripple at 1 kHz, the output sees less than 20 µVpp — clean enough for a 12-bit ADC reference without additional filtering."},{"question":"What compliance documentation does Texas Instruments provide for TPS73118MDBVREP?","answer":"The device is ROHS3 compliant, covering the full substance restriction without exemptions. Texas Instruments provides the standard declaration of conformity and material composition data through their documentation portal. No UL or IEC certification is listed for this part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS73118MDBVREP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS73118MDBVREP 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}}