{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM79M15CT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM79M15CT","canonicalUrl":"https://icboms.com/texas-instruments/LM79M15CT","factsUrl":"https://icboms.com/api/mcp/products/LM79M15CT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM79M15CT fixed negative linear regulator, -12V output, 500mA, TO-220-3 through-hole, 70dB PSRR at 120Hz, bulk package.","salesMarkdown":"## Negative rail regulator in TO-220-3 The LM79M15CT is a fixed -12 V output linear regulator from Texas Instruments, delivering up to 500 mA. The TO-220-3 through-hole package allows direct mounting to a heatsink or chassis for thermal management — the tab is the output pin, so the heatsink path is electrically live and must be isolated or grounded accordingly. With a maximum dropout voltage of 1.1 V at full load, the input rail must stay below -13.1 V (absolute minimum -35 V) to maintain regulation. The 70 dB PSRR at 120 Hz means this regulator rejects rectified ripple from a line-frequency supply, making it a clean source for analog negative rails in op-amp or ADC circuits. ## Protection and temperature range Built-in over-temperature shutdown and short-circuit protection let the regulator survive output faults without external crowbar circuitry. The operating junction temperature range is 0°C to 125°C — suitable for commercial and industrial environments that stay above freezing. Quiescent current is 1.5 mA typical, which is the regulator's own draw when delivering no load — a consideration for always-on rails where standby power matters.","metaTitle":"Texas Instruments LM79M15CT -12V Fixed LDO, 500mA, TO-220-3","metaDescription":"Texas Instruments LM79M15CT fixed -12V LDO, 500mA output, 70dB PSRR at 120Hz. TO-220-3 through-hole. Active production — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"70dB (120Hz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","lifecycle_stage":"eol_hot","Current - Output":"500mA","Protection Features":"Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Negative","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"-35V","Voltage Dropout (Max)":"1.1V @ 500mA","Supplier Device Package":"TO-220-3","Current - Quiescent (Iq)":"1.5 mA","Voltage - Output (Min/Fixed)":"-12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.64","stockQuantity":0,"priceTiers":[{"qty":466,"price":"$0.64000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ca2ea65c712b520bf7b1b137b15329e2.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM79M15CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM79M15CT 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}}