{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TC1303B-DG0EMF","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"TC1303B-DG0EMF","canonicalUrl":"https://icboms.com/microchip/TC1303B-DG0EMF","factsUrl":"https://icboms.com/api/mcp/products/TC1303B-DG0EMF","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology TC1303B-DG0EMF dual-output power management IC, synchronous buck (3 V, 500 mA) plus LDO (2.7 V, 300 mA), 2 MHz switching, integrated sequencer, 10-DFN (3x3 mm), -40 to 85°C, RoHS3.","salesMarkdown":"## Active dual-rail PMIC for space-constrained designs The TC1303B-DG0EMF: The integrated power sequencer (w/Sequencer = Yes) ensures the two rails come up in the correct order on power-on, eliminating the need for an external supervisor or reset IC in multi-voltage designs. ## What the 2 MHz switching and dual topology mean for your BOM The 2 MHz switching frequency of the synchronous buck converter lets you use small-value inductors and ceramic output capacitors — typically 1 µH to 4.7 µH and 10 µF MLCCs — keeping the total solution footprint under 30 mm² including passives. The LDO output provides a clean, low-noise rail at 2.7 V / 300 mA for analog or RF sections that cannot tolerate the ripple from a switching regulator — the buck's output feeds the LDO's input internally, so the LDO's PSRR attenuates the switching noise. Operating temperature covers -40°C to 85°C, which is the industrial-grade band — suitable for outdoor telecom, factory-floor sensors, and automotive cabin electronics that see ambient heat but not under-hood extremes. ## Package, footprint, and board integration Housed in a 10-VFDFN with exposed pad (3x3 mm DFN per the supplier device package), the part is surface-mount with a thermal pad underneath that must be soldered to a PCB copper land for adequate heat dissipation — the junction-to-board thermal path goes through this pad. The exposed pad also serves as the ground connection; the datasheet layout recommendation places several thermal vias under the pad to pull heat into the inner-layer ground plane. Supplied in tube packaging, which is the standard antistatic tube for DFN devices — suitable for low-volume assembly or prototyping; for reel packaging check the TC1303B-DG0EMFTR variant.","metaTitle":"Microchip TC1303B-DG0EMF Dual Regulator, 2 MHz Buck + LDO","metaDescription":"Active Microchip TC1303B-DG0EMF dual-output PMIC: 2 MHz synchronous buck (3 V, 500 mA) plus LDO (2.7 V, 300 mA) with sequencer. 10-DFN package, -40 to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Package":"Tube","Topology":"Step-Down (Buck) Synchronous (1), Linear (LDO) (1)","w/Sequencer":"Yes","w/LED Driver":"No","w/Supervisor":"No","Mounting Type":"Surface Mount","Package / Case":"10-VFDFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 5.5V","Number of Outputs":"2","Frequency - Switching":"2MHz","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"10-DFN (3x3)","Voltage/Current - Output 1":"3V, 500mA","Voltage/Current - Output 2":"2.7V, 300mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.82","priceTiers":[{"qty":1,"price":"$1.82000","currency":"USD"},{"qty":25,"price":"$1.65000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d80c0a8ccfd3df9c87e8283f9657b0f9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TC1303B-DG0EMF/alternatives.json"},"ai":{"faq":[{"question":"What is TC1303B-DG0EMF's topology and how many outputs does it have?","answer":"It integrates a step-down synchronous buck converter and a linear (LDO) regulator in one package — two outputs total. The buck delivers 3 V at 500 mA, and the LDO delivers 2.7 V at 300 mA. An on-chip power sequencer controls the startup order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/TC1303B-DG0EMF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/TC1303B-DG0EMF 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}}