component
TPS54478RTER
Public Made by Adomby adom
Texas Instruments DC-DC Converters, WQFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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tps54478rter: specified limits as data (metadata.characteristics, 60 rows from the datasheet)
2 files changed
+795−1
README.md+67@@ -35,6 +35,73 @@ TPS54478RTER from Texas Instruments, in a WQFN-16-EP(3x3). Pinout and pin descri | Category | Power Management (PMIC) | | Pins | 17 | +## Electrical characteristics++Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).++| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |+|---|---|---|---|---|---|---|---|+| Input voltage (VIN pin) | VIN | -0.3 | | 7 | V | | 4 |+| EN pin voltage | EN | -0.3 | | 7 | V | | 4 |+| VSENSE pin voltage | VSENSE | -0.3 | | 3 | V | | 4 |+| COMP pin voltage | COMP | -0.3 | | 3 | V | | 4 |+| PWRGD pin voltage | PWRGD | -0.3 | | 7 | V | | 4 |+| SS/TR pin voltage | SS/TR | -0.3 | | 3 | V | | 4 |+| RT/CLK pin voltage | RT/CLK | -0.3 | | 3.3 | V | | 4 |+| BOOT-PH output voltage | BOOT-PH | | | 7 | V | | 4 |+| PH output voltage (DC) | PH | -0.6 | | 7 | V | | 4 |+| PH output voltage (transient) | PH | -2 | | 10 | V | 10 ns transient | 4 |+| EN source current | EN | | | 100 | µA | | 4 |+| RT/CLK source current | RT/CLK | | | 100 | µA | | 4 |+| COMP sink current | COMP | | | 100 | µA | | 4 |+| PWRGD sink current | PWRGD | | | 10 | mA | | 4 |+| SS/TR sink current | SS/TR | | | 100 | µA | | 4 |+| Junction temperature | Tj | -40 | | 150 | °C | | 4 |+| Storage temperature | Tstg | -65 | | 150 | °C | | 4 |+| Input voltage range | VIN | 2.95 | | 6 | V | | 4 |+| Output current | IOUT | 0 | | 4 | A | | 4 |+| Operating junction temperature range | TJ | -40 | | 150 | °C | | 4 |+| Operating input voltage | VIN | 2.95 | | 6 | V | | 5 |+| Shutdown supply current | | | 0.7 | 2.5 | μA | EN = 0 V, 25°C, 2.95 V ≤ VIN ≤ 6 V | 5 |+| Quiescent current - Iq | Iq | | 525 | 700 | μA | VSENSE = 0.7 V, VIN = 5 V, 25°C, RT = 78.7 kΩ | 5 |+| Voltage reference | | 0.594 | 0.6 | 0.606 | V | 2.95 V ≤ VIN ≤ 6 V, –40°C <TJ < 150°C | 5 |+| High side switch resistance | | | 30 | 60 | mΩ | BOOT-PH = 5 V | 5 |+| High side switch resistance | | | 37 | 70 | mΩ | BOOT-PH = 3.3 V | 5 |+| Low side switch resistance | | | 30 | 60 | mΩ | VIN = 5 V | 5 |+| Low side switch resistance | | | 37 | 70 | mΩ | VIN = 3.3 V | 5 |+| Error amplifier source/sink | | -20 | | 20 | µA | V(COMP) = 1 V, 100 mV overdrive | 5 |+| Current limit threshold | | 5.2 | 6.5 | 8.2 | A | VIN = 6V, Fs = 500 KHz | 5 |+| Switching frequency range using RT mode | | 200 | | 2000 | kHz | | 6 |+| Switching frequency | | 400 | 500 | 600 | kHz | R(RT/CLK) = 78.7 kΩ | 6 |+| Switching frequency range using CLK mode | | 300 | | 2000 | kHz | | 6 |+| RT/CLK high threshold | | 1.6 | | 2.2 | V | | 6 |+| RT/CLK low threshold | | 0.4 | | 0.6 | V | | 6 |+| On resistance (PWRGD) | | | 56 | 120 | Ω | VIN = 2.95 V | 6 |+| Output low (PWRGD) | | | 0.2 | 0.3 | V | I(PWRGD) = 3 mA | 6 |+| Minimum VIN for valid output (PWRGD) | | | 1.2 | 1.6 | V | V(PWRGD) < 0.5 V at 100 μA | 6 |+| Junction-to-ambient thermal resistance | RθJA | | 49.1 | | °C/W | | 5 |+| Junction-to-case (top) thermal resistance | RθJC(top) | | 0.7 | | °C/W | | 5 |+| Junction-to-board thermal resistance | RθJB | | 21.8 | | °C/W | | 5 |+| Junction-to-top characterization parameter | ψJT | | 50.7 | | °C/W | | 5 |+| Junction-to-board characterization parameter | ψJB | | 7.5 | | °C/W | | 5 |+| Junction-to-case (bottom) thermal resistance | RθJC(bot) | | 21.8 | | °C/W | | 5 |+| Input under voltage lockout threshold | | | 2.6 | | V | No voltage hysteresis | 5 |+| Enable threshold (rising) | | | 1.3 | | V | Rising | 5 |+| Enable threshold (falling) | | | 1.21 | | V | Falling | 5 |+| Error amplifier transconductance (gm) | gm | | 225 | | μmhos | –2 μA < I(COMP) < 2 μA, V(COMP) = 1 V | 5 |+| Error amplifier transconductance (gm) during slow start | gm | | 77 | | μmhos | –2 μA < I(COMP) < 2 μA, V(COMP) = 1 V, Vsense = 0.4 V | 5 |+| COMP to Iswitch gm | | | 14 | | A/V | | 5 |+| Thermal shutdown | | | 165 | | °C | | 5 |+| Thermal shutdown hysteresis | | | 15 | | °C | | 6 |+| SS voltage threshold (VSSTHR) | VSSTHR | | 0.15 | | V | | 6 |+| SS charge current | | | 45 | | µA | V(SS/TR) < VSSTHR | 6 |+| SS charge current | | | 2.2 | | µA | V(SS/TR) > VSSTHR | 6 |+| BOOT-PH UVLO | | | 2.2 | | V | VIN = 2.95 V | 6 |+| BOOT charge resistance | | | 15 | | Ω | VIN = 5 V | 6 |+| Low side FET reverse current limit | | | 3.1 | | A | | 5 |+| Cycles before entering hiccup | | | 512 | | Cycles | | 5 |+| Cycles of converter in off state during hiccup | | | 16384 | | Cycles | | 5 |+ ## CAD (KiCad official) - Symbol: `TPS54478RTER`
page.json+728−1@@ -234,6 +234,733 @@ "Package": "WQFN-16-EP(3x3)", "Category": "Power Management (PMIC)", "Pins": "17"+ },+ "characteristics": {+ "version": 1,+ "source": "datasheet",+ "datasheet_sha256": "efbe291862db5c5d",+ "rows": [+ {+ "name": "Input voltage (VIN pin)",+ "symbol": "VIN",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 7,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "EN pin voltage",+ "symbol": "EN",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 7,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "VSENSE pin voltage",+ "symbol": "VSENSE",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 3,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "COMP pin voltage",+ "symbol": "COMP",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 3,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "PWRGD pin voltage",+ "symbol": "PWRGD",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 7,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "SS/TR pin voltage",+ "symbol": "SS/TR",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 3,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "RT/CLK pin voltage",+ "symbol": "RT/CLK",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 3.3,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "BOOT-PH output voltage",+ "symbol": "BOOT-PH",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 7,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "PH output voltage (DC)",+ "symbol": "PH",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.6,+ "typ": null,+ "max": 7,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "PH output voltage (transient)",+ "symbol": "PH",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -2,+ "typ": null,+ "max": 10,+ "conditions": "10 ns transient",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "EN source current",+ "symbol": "EN",+ "kind": "absolute_maximum",+ "unit": "µA",+ "min": null,+ "typ": null,+ "max": 100,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "RT/CLK source current",+ "symbol": "RT/CLK",+ "kind": "absolute_maximum",+ "unit": "µA",+ "min": null,+ "typ": null,+ "max": 100,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "COMP sink current",+ "symbol": "COMP",+ "kind": "absolute_maximum",+ "unit": "µA",+ "min": null,+ "typ": null,+ "max": 100,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "PWRGD sink current",+ "symbol": "PWRGD",+ "kind": "absolute_maximum",+ "unit": "mA",+ "min": null,+ "typ": null,+ "max": 10,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "SS/TR sink current",+ "symbol": "SS/TR",+ "kind": "absolute_maximum",+ "unit": "µA",+ "min": null,+ "typ": null,+ "max": 100,+ "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": "Input voltage range",+ "symbol": "VIN",+ "kind": "recommended_operating",+ "unit": "V",+ "min": 2.95,+ "typ": null,+ "max": 6,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Output current",+ "symbol": "IOUT",+ "kind": "recommended_operating",+ "unit": "A",+ "min": 0,+ "typ": null,+ "max": 4,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Operating junction temperature range",+ "symbol": "TJ",+ "kind": "recommended_operating",+ "unit": "°C",+ "min": -40,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 4,+ "source": "datasheet"+ },+ {+ "name": "Operating input voltage",+ "symbol": "VIN",+ "kind": "electrical",+ "unit": "V",+ "min": 2.95,+ "typ": null,+ "max": 6,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Shutdown supply current",+ "symbol": "",+ "kind": "electrical",+ "unit": "μA",+ "min": null,+ "typ": 0.7,+ "max": 2.5,+ "conditions": "EN = 0 V, 25°C, 2.95 V ≤ VIN ≤ 6 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Quiescent current - Iq",+ "symbol": "Iq",+ "kind": "electrical",+ "unit": "μA",+ "min": null,+ "typ": 525,+ "max": 700,+ "conditions": "VSENSE = 0.7 V, VIN = 5 V, 25°C, RT = 78.7 kΩ",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Voltage reference",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": 0.594,+ "typ": 0.6,+ "max": 0.606,+ "conditions": "2.95 V ≤ VIN ≤ 6 V, –40°C <TJ < 150°C",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "High side switch resistance",+ "symbol": "",+ "kind": "electrical",+ "unit": "mΩ",+ "min": null,+ "typ": 30,+ "max": 60,+ "conditions": "BOOT-PH = 5 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "High side switch resistance",+ "symbol": "",+ "kind": "electrical",+ "unit": "mΩ",+ "min": null,+ "typ": 37,+ "max": 70,+ "conditions": "BOOT-PH = 3.3 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Low side switch resistance",+ "symbol": "",+ "kind": "electrical",+ "unit": "mΩ",+ "min": null,+ "typ": 30,+ "max": 60,+ "conditions": "VIN = 5 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Low side switch resistance",+ "symbol": "",+ "kind": "electrical",+ "unit": "mΩ",+ "min": null,+ "typ": 37,+ "max": 70,+ "conditions": "VIN = 3.3 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Error amplifier source/sink",+ "symbol": "",+ "kind": "electrical",+ "unit": "µA",+ "min": -20,+ "typ": null,+ "max": 20,+ "conditions": "V(COMP) = 1 V, 100 mV overdrive",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Current limit threshold",+ "symbol": "",+ "kind": "electrical",+ "unit": "A",+ "min": 5.2,+ "typ": 6.5,+ "max": 8.2,+ "conditions": "VIN = 6V, Fs = 500 KHz",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Switching frequency range using RT mode",+ "symbol": "",+ "kind": "electrical",+ "unit": "kHz",+ "min": 200,+ "typ": null,+ "max": 2000,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Switching frequency",+ "symbol": "",+ "kind": "electrical",+ "unit": "kHz",+ "min": 400,+ "typ": 500,+ "max": 600,+ "conditions": "R(RT/CLK) = 78.7 kΩ",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Switching frequency range using CLK mode",+ "symbol": "",+ "kind": "electrical",+ "unit": "kHz",+ "min": 300,+ "typ": null,+ "max": 2000,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "RT/CLK high threshold",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": 1.6,+ "typ": null,+ "max": 2.2,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "RT/CLK low threshold",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": 0.4,+ "typ": null,+ "max": 0.6,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "On resistance (PWRGD)",+ "symbol": "",+ "kind": "electrical",+ "unit": "Ω",+ "min": null,+ "typ": 56,+ "max": 120,+ "conditions": "VIN = 2.95 V",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Output low (PWRGD)",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 0.2,+ "max": 0.3,+ "conditions": "I(PWRGD) = 3 mA",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Minimum VIN for valid output (PWRGD)",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 1.2,+ "max": 1.6,+ "conditions": "V(PWRGD) < 0.5 V at 100 μA",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-ambient thermal resistance",+ "symbol": "RθJA",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 49.1,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-case (top) thermal resistance",+ "symbol": "RθJC(top)",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 0.7,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-board thermal resistance",+ "symbol": "RθJB",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 21.8,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-top characterization parameter",+ "symbol": "ψJT",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 50.7,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-board characterization parameter",+ "symbol": "ψJB",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 7.5,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction-to-case (bottom) thermal resistance",+ "symbol": "RθJC(bot)",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": 21.8,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Input under voltage lockout threshold",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 2.6,+ "max": null,+ "conditions": "No voltage hysteresis",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Enable threshold (rising)",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 1.3,+ "max": null,+ "conditions": "Rising",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Enable threshold (falling)",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 1.21,+ "max": null,+ "conditions": "Falling",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Error amplifier transconductance (gm)",+ "symbol": "gm",+ "kind": "electrical",+ "unit": "μmhos",+ "min": null,+ "typ": 225,+ "max": null,+ "conditions": "–2 μA < I(COMP) < 2 μA, V(COMP) = 1 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Error amplifier transconductance (gm) during slow start",+ "symbol": "gm",+ "kind": "electrical",+ "unit": "μmhos",+ "min": null,+ "typ": 77,+ "max": null,+ "conditions": "–2 μA < I(COMP) < 2 μA, V(COMP) = 1 V, Vsense = 0.4 V",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "COMP to Iswitch gm",+ "symbol": "",+ "kind": "electrical",+ "unit": "A/V",+ "min": null,+ "typ": 14,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Thermal shutdown",+ "symbol": "",+ "kind": "electrical",+ "unit": "°C",+ "min": null,+ "typ": 165,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Thermal shutdown hysteresis",+ "symbol": "",+ "kind": "electrical",+ "unit": "°C",+ "min": null,+ "typ": 15,+ "max": null,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "SS voltage threshold (VSSTHR)",+ "symbol": "VSSTHR",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 0.15,+ "max": null,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "SS charge current",+ "symbol": "",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": 45,+ "max": null,+ "conditions": "V(SS/TR) < VSSTHR",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "SS charge current",+ "symbol": "",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": 2.2,+ "max": null,+ "conditions": "V(SS/TR) > VSSTHR",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "BOOT-PH UVLO",+ "symbol": "",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 2.2,+ "max": null,+ "conditions": "VIN = 2.95 V",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "BOOT charge resistance",+ "symbol": "",+ "kind": "electrical",+ "unit": "Ω",+ "min": null,+ "typ": 15,+ "max": null,+ "conditions": "VIN = 5 V",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Low side FET reverse current limit",+ "symbol": "",+ "kind": "electrical",+ "unit": "A",+ "min": null,+ "typ": 3.1,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Cycles before entering hiccup",+ "symbol": "",+ "kind": "electrical",+ "unit": "Cycles",+ "min": null,+ "typ": 512,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Cycles of converter in off state during hiccup",+ "symbol": "",+ "kind": "electrical",+ "unit": "Cycles",+ "min": null,+ "typ": 16384,+ "max": null,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ }+ ] } }, "variants": [],@@ -275,4 +1002,4 @@ "visibility": { "public": true }-}+}