{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT1964IS5-BYP#TRMPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT1964IS5-BYPTRMPBF","canonicalUrl":"https://icboms.com/analog-devices/LT1964IS5-BYPTRMPBF","factsUrl":"https://icboms.com/api/mcp/products/LT1964IS5-BYP%23TRMPBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT1964IS5-BYP#TRMPBF, Negative Adjustable LDO Regulator, 200mA Output, 0.49V Dropout at 200mA, 54dB PSRR at 120Hz, -40°C to 125°C, TSOT-23-5 Package.","salesMarkdown":"## Negative rail LDO for precision analog and industrial supplies The Analog Devices LT1964IS5-BYP#TRMPBF is a negative-output, adjustable low-dropout linear regulator delivering up to 200 mA. It is designed for generating clean negative rails in dual-supply analog systems, industrial sensor interfaces, and audio circuits where power-supply rejection matters. The output is adjustable from -1.22 V down to -20 V using an external resistor divider, matching the maximum input voltage rating of -20 V. A 54 dB PSRR at 120 Hz keeps 60 Hz and its harmonics from coupling into sensitive analog stages — the kind of rejection that matters when a switching pre-regulator feeds the negative rail and you need the op-amp's noise floor to stay low. ## Dropout and headroom for the negative rail Maximum dropout is specified at 0.49 V with the full 200 mA load. That means a -5 V input rail can hold a -4.5 V output through a cold-crank or brownout condition — useful when the negative rail comes from a charge pump or a secondary winding that droops under load. The 200 mA output current is the ceiling for a single regulator; if the load exceeds that, the over-current protection engages. The enable pin lets the regulator be sequenced or shut down for power-save modes. ## Protection features that matter on a negative rail Reverse polarity protection is built in — a genuine differentiator for negative-rail designs. If the input supply is accidentally reversed, the regulator limits damage rather than letting the silicon conduct. Over-temperature and over-current protection round out the set, so the part can survive a sustained short on the output without immediate failure. ## Package and footprint: TSOT-23-5 The LT1964IS5-BYP#TRMPBF is supplied in a TSOT-23-5 package, a thin SOT-23 variant with a 0.95 mm pitch. The 'BYP' suffix indicates the bypass pin variant — a noise-reduction capacitor on the BYP pin can lower output noise further, per the datasheet's typical application circuit. No special bake-out is needed if the moisture barrier bag is intact; standard MSL 1 handling applies.","metaTitle":"LT1964IS5-BYP#TRMPBF Negative LDO Regulator, 200mA","metaDescription":"Analog Devices LT1964IS5-BYP#TRMPBF negative adjustable LDO, 200mA output, 0.49V dropout, 54dB PSRR at 120Hz, -40 to 125°C, TSOT-23-5.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"PSRR":"54dB (120Hz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"SOT-23-5 Thin, TSOT-23-5","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"200mA","Protection Features":"Over Current, Over Temperature, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Negative","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"-20V","Voltage Dropout (Max)":"0.49V @ 200mA","Voltage - Output (Max)":"-20V","Supplier Device Package":"TSOT-23-5","Voltage - Output (Min/Fixed)":"-1.22V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.27","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.27000","currency":"USD"},{"qty":10,"price":"$4.73500","currency":"USD"},{"qty":25,"price":"$4.47680","currency":"USD"},{"qty":100,"price":"$3.87990","currency":"USD"},{"qty":250,"price":"$3.68096","currency":"USD"},{"qty":500,"price":"$3.30290","currency":"USD"},{"qty":1000,"price":"$2.78558","currency":"USD"},{"qty":2500,"price":"$2.64630","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/1964fb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can the LT1964IS5-BYP#TRMPBF be used for positive regulation?","answer":"No. The LT1964IS5-BYP#TRMPBF is a negative-output regulator. It is designed to generate a negative voltage rail from a negative input supply. For positive regulation, use the LT1963A or a similar positive LDO."},{"question":"Is the LT1964IS5-BYP#TRMPBF lead-free?","answer":"Yes. It is RoHS3 compliant, meaning it meets the latest EU RoHS directive without any of the exempted lead-content allowances. The finish is lead-free."},{"question":"What is the PSRR of the LT1964IS5-BYP#TRMPBF?","answer":"PSRR is specified at 54 dB at 120 Hz. This is the typical value at that frequency; the datasheet provides a PSRR vs. frequency curve showing rejection across the audio band."},{"question":"What is a functional second-source for the LT1964IS5-BYP#TRMPBF?","answer":"The ADP7182ACPZ-R7 from Analog Devices is a close functional peer — also a negative, adjustable LDO rated for 200 mA with an enable pin, in a similar package (LFCSP). The ADP7182 offers higher PSRR (66 dB at 10 kHz) and a 28 V input maximum. However, the package and pinout differ, so a board layout change is required. The LT1964IS5-BYP#TRMPBF remains the direct fit for the TSOT-23-5 footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT1964IS5-BYPTRMPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT1964IS5-BYPTRMPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}