component
LMR51420XDDCR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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lmr51420xddcr: specified limits as data (metadata.characteristics, 50 rows from the datasheet)
2 files changed
+664
README.md+57@@ -24,6 +24,63 @@ LMR51420XDDCR from Texas Instruments, in a SOT-23-6. Pinout and pin descriptions | Category | Power Management (PMIC) | | Pins | 6 | +## Electrical characteristics++Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).++| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |+|---|---|---|---|---|---|---|---|+| VIN quiescent current (non-switching) | IQ(VIN) | | 40 | 65 | µA | VEN = 3 V, PFM variant only | 5 |+| VIN shutdown supply current | ISD(VIN) | | 3 | 15 | µA | VEN = 0 V | 5 |+| VIN UVLO rising threshold | VINUVLO(R) | 3.89 | | 4.5 | V | VIN rising | 5 |+| VIN UVLO falling threshold | VINUVLO(F) | 3.35 | | 3.58 | V | VIN falling | 5 |+| EN voltage rising threshold | VEN(R) | 1.1 | 1.227 | 1.36 | V | EN rising, enable switching | 5 |+| EN voltage falling threshold | VEN(F) | 0.95 | 1.08 | 1.22 | V | EN falling, disable switching | 5 |+| EN pin sourcing current post EN rising threshold | IEN(P2) | | 10 | 200 | nA | VEN = 3 V | 5 |+| Reference voltage | Vfb | 0.591 | 0.6 | 0.609 | V | | 5 |+| FB input leakage current | IFB(LKG) | | 0.8 | 50 | nA | VFB = 1.2 V | 5 |+| Switching frequency, CCM operation | fSW1(CCM) | 450 | 500 | 560 | kHz | 500-kHz trim option | 5 |+| Internal fixed soft-start time | tSS | 3.2 | 4 | 5.4 | ms | | 5 |+| High-side peak current limit | IHS_PK(OC) | 2.7 | 3.5 | 5.1 | A | LM51420 | 5 |+| Low-side valley current limit | ILS_V(OC) | 1.7 | 2.5 | 3.4 | A | LM51420 | 6 |+| VIN operating input voltage range | VIN | 4.5 | | 36 | V | | 6 |+| Adjustable output voltage regulation (PFM operation) | VOUT | -1.5 | | 2.5 | % | PFM operation; VIN = 24 V, IOUT = 0 A to full load | 6 |+| Maximum switch duty cycle | DMAX | | | 98 | % | | 6 |+| VIN to GND input voltage | VIN | 4.5 | | 36 | V | | 4 |+| EN pin voltage | EN | 0 | | | V | | 4 |+| FB pin voltage | FB | 0 | | 4.5 | V | | 4 |+| Output voltage | VOUT | 0.6 | | | V | | 4 |+| Output current | Iout | | | 2 | A | | 4 |+| Operating junction temperature | TJ | -40 | | 150 | °C | | 4 |+| Input voltage VIN | VIN | -0.3 | | 38 | V | | 4 |+| Input voltage EN | EN | -0.3 | | | V | | 4 |+| Input voltage FB | FB | -0.3 | | 5.5 | V | | 4 |+| Output voltage SW, DC | SW | -0.3 | | 38 | V | DC | 4 |+| Output voltage SW, transient | SW | -3 | | 38 | V | transient < 20 ns | 4 |+| Output voltage CB | CB | -0.3 | | 43.5 | V | | 4 |+| CB to SW voltage | CB to SW | -0.3 | | 5.5 | V | | 4 |+| Junction temperature | TJ | -40 | | 150 | °C | | 4 |+| Storage temperature | Tstg | -65 | | 150 | °C | | 4 |+| VIN UVLO hysteresis | VINUVLO(H) | | 0.3 | | V | | 5 |+| High-side MOSFET on-resistance | RDSON(HS) | | 0.12 | | Ω | TJ = 25℃ | 5 |+| Low-side MOSFET on-resistance | RDSON(LS) | | 0.07 | | Ω | TJ = 25℃ | 5 |+| Minimum ON pulse width | tON(min) | | 70 | | ns | VIN = 12 V, IOUT = 2 A | 5 |+| Maximum ON pulse width | tON(max) | | 6.76 | | µs | VIN = 12 V, IOUT = 2 A | 5 |+| Minimum OFF pulse width | tOFF(min) | | 150 | | ns | VIN = 4.5 V | 5 |+| Zero-cross detection current threshold | IZC | | 0.02 | | A | | 6 |+| Thermal shutdown threshold | TJ(SD) | | 163 | | °C | Temperature rising | 6 |+| Thermal shutdown hysteresis | TJ(HYS) | | 22 | | °C | | 6 |+| VIN quiescent current (non-switching), system | ISUPPLY | | 40 | | µA | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A, RFBT = 1 MΩ, PFM variant | 6 |+| FB pin voltage to trip short-circuit hiccup mode | VHC | | 0.24 | | V | | 6 |+| Switch voltage dead-time | tD | | 6.5 | | ns | | 6 |+| Thermal shutdown temperature | TSD | | 163 | | °C | Shutdown temperature | 6 |+| Thermal shutdown temperature | TSD | | 141 | | °C | Recovery temperature | 6 |+| Junction-to-ambient thermal resistance | RθJA | | 107.8 | | °C/W | DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board | 5 |+| Junction-to-case (top) thermal resistance | RθJC(top) | | 52.4 | | °C/W | DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board | 5 |+| Junction-to-board thermal resistance | RθJB | | 23.3 | | °C/W | DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board | 5 |+| Junction-to-top characterization parameter | ψJT | | 9.3 | | °C/W | DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board | 5 |+| Junction-to-board characterization parameter | ψJB | | 23 | | °C/W | DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board | 5 |+ ## CAD (KiCad official) - Symbol: `LMR51420XDDCR`
page.json+607@@ -151,6 +151,613 @@ "Package": "SOT-23-6", "Category": "Power Management (PMIC)", "Pins": "6"+ },+ "characteristics": {+ "version": 1,+ "source": "datasheet",+ "datasheet_sha256": "0ad3d2ef438f42ca",+ "rows": [+ {+ "name": "VIN quiescent current (non-switching)",+ "symbol": "IQ(VIN)",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": 40,+ "max": 65,+ "conditions": "VEN = 3 V, PFM variant only",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "VIN shutdown supply current",+ "symbol": "ISD(VIN)",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": 3,+ "max": 15,+ "conditions": "VEN = 0 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "VIN UVLO rising threshold",+ "symbol": "VINUVLO(R)",+ "kind": "electrical",+ "unit": "V",+ "min": 3.89,+ "typ": null,+ "max": 4.5,+ "conditions": "VIN rising",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "VIN UVLO falling threshold",+ "symbol": "VINUVLO(F)",+ "kind": "electrical",+ "unit": "V",+ "min": 3.35,+ "typ": null,+ "max": 3.58,+ "conditions": "VIN falling",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "EN voltage rising threshold",+ "symbol": "VEN(R)",+ "kind": "electrical",+ "unit": "V",+ "min": 1.1,+ "typ": 1.227,+ "max": 1.36,+ "conditions": "EN rising, enable switching",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "EN voltage falling threshold",+ "symbol": "VEN(F)",+ "kind": "electrical",+ "unit": "V",+ "min": 0.95,+ "typ": 1.08,+ "max": 1.22,+ "conditions": "EN falling, disable switching",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "EN pin sourcing current post EN rising threshold",+ "symbol": "IEN(P2)",+ "kind": "electrical",+ "unit": "nA",+ "min": null,+ "typ": 10,+ "max": 200,+ "conditions": "VEN = 3 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Reference voltage",+ "symbol": "Vfb",+ "kind": "electrical",+ "unit": "V",+ "min": 0.591,+ "typ": 0.6,+ "max": 0.609,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "FB input leakage current",+ "symbol": "IFB(LKG)",+ "kind": "electrical",+ "unit": "nA",+ "min": null,+ "typ": 0.8,+ "max": 50,+ "conditions": "VFB = 1.2 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Switching frequency, CCM operation",+ "symbol": "fSW1(CCM)",+ "kind": "electrical",+ "unit": "kHz",+ "min": 450,+ "typ": 500,+ "max": 560,+ "conditions": "500-kHz trim option",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Internal fixed soft-start time",+ "symbol": "tSS",+ "kind": "timing",+ "unit": "ms",+ "min": 3.2,+ "typ": 4,+ "max": 5.4,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "High-side peak current limit",+ "symbol": "IHS_PK(OC)",+ "kind": "electrical",+ "unit": "A",+ "min": 2.7,+ "typ": 3.5,+ "max": 5.1,+ "conditions": "LM51420",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Low-side valley current limit",+ "symbol": "ILS_V(OC)",+ "kind": "electrical",+ "unit": "A",+ "min": 1.7,+ "typ": 2.5,+ "max": 3.4,+ "conditions": "LM51420",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "VIN operating input voltage range",+ "symbol": "VIN",+ "kind": "recommended_operating",+ "unit": "V",+ "min": 4.5,+ "typ": null,+ "max": 36,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Adjustable output voltage regulation (PFM operation)",+ "symbol": "VOUT",+ "kind": "tolerance",+ "unit": "%",+ "min": -1.5,+ "typ": null,+ "max": 2.5,+ "conditions": "PFM operation; VIN = 24 V, IOUT = 0 A to full load",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Maximum switch duty cycle",+ "symbol": "DMAX",+ "kind": "electrical",+ "unit": "%",+ "min": null,+ "typ": null,+ "max": 98,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "VIN to GND input voltage",+ "symbol": "VIN",+ "kind": "recommended_operating",+ "unit": "V",+ "min": 4.5,+ "typ": null,+ "max": 36,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "EN pin voltage",+ "symbol": "EN",+ "kind": "recommended_operating",+ "unit": "V",+ "min": 0,+ "typ": null,+ "max": null,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "FB pin voltage",+ "symbol": "FB",+ "kind": "recommended_operating",+ "unit": "V",+ "min": 0,+ "typ": null,+ "max": 4.5,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Output voltage",+ "symbol": "VOUT",+ "kind": "recommended_operating",+ "unit": "V",+ "min": 0.6,+ "typ": null,+ "max": null,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Output current",+ "symbol": "Iout",+ "kind": "recommended_operating",+ "unit": "A",+ "min": null,+ "typ": null,+ "max": 2,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Operating junction temperature",+ "symbol": "TJ",+ "kind": "recommended_operating",+ "unit": "°C",+ "min": -40,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Input voltage VIN",+ "symbol": "VIN",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 38,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Input voltage EN",+ "symbol": "EN",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": null,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Input voltage FB",+ "symbol": "FB",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 5.5,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Output voltage SW, DC",+ "symbol": "SW",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 38,+ "conditions": "DC",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Output voltage SW, transient",+ "symbol": "SW",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -3,+ "typ": null,+ "max": 38,+ "conditions": "transient < 20 ns",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Output voltage CB",+ "symbol": "CB",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 43.5,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "CB to SW voltage",+ "symbol": "CB to SW",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 5.5,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Junction temperature",+ "symbol": "TJ",+ "kind": "absolute_maximum",+ "unit": "°C",+ "min": -40,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Storage temperature",+ "symbol": "Tstg",+ "kind": "absolute_maximum",+ "unit": "°C",+ "min": -65,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "VIN UVLO hysteresis",+ "symbol": "VINUVLO(H)",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 0.3,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "High-side MOSFET on-resistance",+ "symbol": "RDSON(HS)",+ "kind": "electrical",+ "unit": "Ω",+ "min": null,+ "typ": 0.12,+ "max": null,+ "conditions": "TJ = 25℃",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Low-side MOSFET on-resistance",+ "symbol": "RDSON(LS)",+ "kind": "electrical",+ "unit": "Ω",+ "min": null,+ "typ": 0.07,+ "max": null,+ "conditions": "TJ = 25℃",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Minimum ON pulse width",+ "symbol": "tON(min)",+ "kind": "timing",+ "unit": "ns",+ "min": null,+ "typ": 70,+ "max": null,+ "conditions": "VIN = 12 V, IOUT = 2 A",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Maximum ON pulse width",+ "symbol": "tON(max)",+ "kind": "timing",+ "unit": "µs",+ "min": null,+ "typ": 6.76,+ "max": null,+ "conditions": "VIN = 12 V, IOUT = 2 A",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Minimum OFF pulse width",+ "symbol": "tOFF(min)",+ "kind": "timing",+ "unit": "ns",+ "min": null,+ "typ": 150,+ "max": null,+ "conditions": "VIN = 4.5 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Zero-cross detection current threshold",+ "symbol": "IZC",+ "kind": "electrical",+ "unit": "A",+ "min": null,+ "typ": 0.02,+ "max": null,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Thermal shutdown threshold",+ "symbol": "TJ(SD)",+ "kind": "thermal",+ "unit": "°C",+ "min": null,+ "typ": 163,+ "max": null,+ "conditions": "Temperature rising",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Thermal shutdown hysteresis",+ "symbol": "TJ(HYS)",+ "kind": "thermal",+ "unit": "°C",+ "min": null,+ "typ": 22,+ "max": null,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "VIN quiescent current (non-switching), system",+ "symbol": "ISUPPLY",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": 40,+ "max": null,+ "conditions": "VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A, RFBT = 1 MΩ, PFM variant",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "FB pin voltage to trip short-circuit hiccup mode",+ "symbol": "VHC",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 0.24,+ "max": null,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Switch voltage dead-time",+ "symbol": "tD",+ "kind": "timing",+ "unit": "ns",+ "min": null,+ "typ": 6.5,+ "max": null,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Thermal shutdown temperature",+ "symbol": "TSD",+ "kind": "thermal",+ "unit": "°C",+ "min": null,+ "typ": 163,+ "max": null,+ "conditions": "Shutdown temperature",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Thermal shutdown temperature",+ "symbol": "TSD",+ "kind": "thermal",+ "unit": "°C",+ "min": null,+ "typ": 141,+ "max": null,+ "conditions": "Recovery temperature",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-ambient thermal resistance",+ "symbol": "RθJA",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 107.8,+ "max": null,+ "conditions": "DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-case (top) thermal resistance",+ "symbol": "RθJC(top)",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 52.4,+ "max": null,+ "conditions": "DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-board thermal resistance",+ "symbol": "RθJB",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 23.3,+ "max": null,+ "conditions": "DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-top characterization parameter",+ "symbol": "ψJT",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 9.3,+ "max": null,+ "conditions": "DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-board characterization parameter",+ "symbol": "ψJB",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 23,+ "max": null,+ "conditions": "DDC (SOT-23-6), JESD 51-7, 4-layer JEDEC board",+ "source_page": 5,+ "source": "datasheet"+ }+ ] } }, "variants": [],