component
L7985ATR
Public Made by Adomby adom
STMicroelectronics DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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l7985atr: specified limits as data (metadata.characteristics, 41 rows from the datasheet)
2 files changed
+548−1
README.md+48@@ -26,6 +26,54 @@ L7985ATR from STMicroelectronics, in a SOIC-8. Pinout and pin descriptions extra | Category | Power Management (PMIC) | | Pins | 8 | +## 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 | Vcc | | | 45 | V | | 5 |+| Output DC voltage | VOUT | -0.3 | | | V | max printed as VCC | 5 |+| Analog pin voltage (FSW, COMP, SYNCH) | FSW, COMP, SYNCH | -0.3 | | 4 | V | | 5 |+| Enable pin voltage | EN | -0.3 | | | V | max printed as VCC | 5 |+| Feedback voltage | FB | -0.3 | | 1.5 | V | | 5 |+| Power dissipation (HSOP) | PTOT | | | 2 | W | TA < 60 °C | 5 |+| Junction temperature range | TJ | -40 | | 150 | °C | | 5 |+| Storage temperature range | Tstg | -55 | | 150 | °C | | 5 |+| Maximum thermal resistance junction ambient (HSOP) | RthJA | | | 40 | °C/W | Package mounted on demonstration board | 5 |+| Operating input voltage range | VCC | 4.5 | | 38 | V | | 6 |+| VCC UVLO hysteresis | VCCHYS | 0.1 | | 0.4 | V | | 6 |+| Maximum limiting current | ILIM | 2.5 | 3 | 3.5 | A | | 6 |+| Switching frequency | FSW | 210 | 250 | 275 | kHz | | 6 |+| Duty cycle | D | 0 | | 100 | % | | 6 |+| Adjustable switching frequency | FADJ | | | 1000 | kHz | RFSW = 33 kΩ | 6 |+| Feedback voltage | VFB | 0.593 | 0.6 | 0.607 | V | 4.5 V < VCC < 38 V | 6 |+| Feedback voltage | VFB | 0.582 | 0.6 | 0.618 | V | 4.5 V < VCC < 38 V; TJ -40 to +125 °C (footnote 1) | 6 |+| Quiescent current | IQ | | | 2.4 | mA | Duty cycle = 0, VFB = 0.8 V | 6 |+| Total standby quiescent current | IQST-BY | | 20 | 30 | µA | | 6 |+| EN threshold voltage, device OFF level | VEN | | | 0.3 | V | Device OFF level | 6 |+| EN threshold voltage, device ON level | VEN | 1.2 | | | V | Device ON level | 6 |+| EN current | IEN | | 7.5 | 10 | µA | EN = VCC | 6 |+| Soft-start duration | TSS | 7.4 | 8.2 | 9.1 | ms | FSW pin floating | 6 |+| Error amplifier high level output voltage | VCH | 3 | | | V | VFB < 0.6 V | 6 |+| Error amplifier low level output voltage | VCL | | | 0.1 | V | VFB > 0.6 V | 6 |+| Source COMP pin current | IO SOURCE | 19 | | | mA | VFB = 0.5 V, VCOMP = 1 V | 6 |+| Sink COMP pin current | IO SINK | 30 | | | mA | VFB = 0.7 V, VCOMP = 1 V | 7 |+| Open-loop voltage gain | GV | 100 | | | dB | | 7 |+| Synchronization high input voltage | VS_IN,HI | 2 | | 3.3 | V | | 7 |+| Synchronization low input voltage | VS_IN,LO | | | 1 | V | | 7 |+| Input pulse width | tS_IN_PW | 100 | | | ns | VS_IN,HI = 3 V, VS_IN,LO = 0 V | 7 |+| Input pulse width | tS_IN_PW | 300 | | | ns | VS_IN,HI = 2 V, VS_IN,LO = 1 V | 7 |+| Slave sink current | ISYNCH,LO | 0.7 | | 1 | mA | VSYNCH = 2.9 V | 7 |+| Master output amplitude | VS_OUT,HI | 2 | | | V | ISOURCE = 4.5 mA | 7 |+| Turn-on VCC threshold | VCCON | | 4.5 | | V | | 6 |+| MOSFET on-resistance | RDSON | | 200 | 400 | mΩ | | 6 |+| FSW pin voltage | VFSW | | 1.254 | | V | | 6 |+| Soft-start duration | TSS | | 2 | | ms | FSW = 1 MHz, R FSW = 33 kΩ | 6 |+| Output pulse width | tS_OUT_PW | | 110 | | ns | SYNCH floating | 7 |+| Thermal shutdown | TSHDN | | 150 | | °C | | 7 |+| Thermal shutdown hysteresis | | | 30 | | °C | | 7 |+ ## CAD (KiCad official) - Symbol: `L7985ATR`
page.json+500−1@@ -179,6 +179,505 @@ "Package": "SOIC-8", "Category": "Power Management (PMIC)", "Pins": "8"+ },+ "characteristics": {+ "version": 1,+ "source": "datasheet",+ "datasheet_sha256": "c5888b437dbd5200",+ "rows": [+ {+ "name": "Input voltage",+ "symbol": "Vcc",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 45,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Output DC voltage",+ "symbol": "VOUT",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": null,+ "conditions": "max printed as VCC",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Analog pin voltage (FSW, COMP, SYNCH)",+ "symbol": "FSW, COMP, SYNCH",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 4,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Enable pin voltage",+ "symbol": "EN",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": null,+ "conditions": "max printed as VCC",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Feedback voltage",+ "symbol": "FB",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": -0.3,+ "typ": null,+ "max": 1.5,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Power dissipation (HSOP)",+ "symbol": "PTOT",+ "kind": "absolute_maximum",+ "unit": "W",+ "min": null,+ "typ": null,+ "max": 2,+ "conditions": "TA < 60 °C",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Junction temperature range",+ "symbol": "TJ",+ "kind": "absolute_maximum",+ "unit": "°C",+ "min": -40,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Storage temperature range",+ "symbol": "Tstg",+ "kind": "absolute_maximum",+ "unit": "°C",+ "min": -55,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Maximum thermal resistance junction ambient (HSOP)",+ "symbol": "RthJA",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": null,+ "max": 40,+ "conditions": "Package mounted on demonstration board",+ "source_page": 5,+ "source": "datasheet"+ },+ {+ "name": "Operating input voltage range",+ "symbol": "VCC",+ "kind": "electrical",+ "unit": "V",+ "min": 4.5,+ "typ": null,+ "max": 38,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "VCC UVLO hysteresis",+ "symbol": "VCCHYS",+ "kind": "electrical",+ "unit": "V",+ "min": 0.1,+ "typ": null,+ "max": 0.4,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Maximum limiting current",+ "symbol": "ILIM",+ "kind": "electrical",+ "unit": "A",+ "min": 2.5,+ "typ": 3,+ "max": 3.5,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Switching frequency",+ "symbol": "FSW",+ "kind": "electrical",+ "unit": "kHz",+ "min": 210,+ "typ": 250,+ "max": 275,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Duty cycle",+ "symbol": "D",+ "kind": "electrical",+ "unit": "%",+ "min": 0,+ "typ": null,+ "max": 100,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Adjustable switching frequency",+ "symbol": "FADJ",+ "kind": "electrical",+ "unit": "kHz",+ "min": null,+ "typ": null,+ "max": 1000,+ "conditions": "RFSW = 33 kΩ",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Feedback voltage",+ "symbol": "VFB",+ "kind": "electrical",+ "unit": "V",+ "min": 0.593,+ "typ": 0.6,+ "max": 0.607,+ "conditions": "4.5 V < VCC < 38 V",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Feedback voltage",+ "symbol": "VFB",+ "kind": "electrical",+ "unit": "V",+ "min": 0.582,+ "typ": 0.6,+ "max": 0.618,+ "conditions": "4.5 V < VCC < 38 V; TJ -40 to +125 °C (footnote 1)",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Quiescent current",+ "symbol": "IQ",+ "kind": "electrical",+ "unit": "mA",+ "min": null,+ "typ": null,+ "max": 2.4,+ "conditions": "Duty cycle = 0, VFB = 0.8 V",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Total standby quiescent current",+ "symbol": "IQST-BY",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": 20,+ "max": 30,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "EN threshold voltage, device OFF level",+ "symbol": "VEN",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 0.3,+ "conditions": "Device OFF level",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "EN threshold voltage, device ON level",+ "symbol": "VEN",+ "kind": "electrical",+ "unit": "V",+ "min": 1.2,+ "typ": null,+ "max": null,+ "conditions": "Device ON level",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "EN current",+ "symbol": "IEN",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": 7.5,+ "max": 10,+ "conditions": "EN = VCC",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Soft-start duration",+ "symbol": "TSS",+ "kind": "electrical",+ "unit": "ms",+ "min": 7.4,+ "typ": 8.2,+ "max": 9.1,+ "conditions": "FSW pin floating",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Error amplifier high level output voltage",+ "symbol": "VCH",+ "kind": "electrical",+ "unit": "V",+ "min": 3,+ "typ": null,+ "max": null,+ "conditions": "VFB < 0.6 V",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Error amplifier low level output voltage",+ "symbol": "VCL",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 0.1,+ "conditions": "VFB > 0.6 V",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Source COMP pin current",+ "symbol": "IO SOURCE",+ "kind": "electrical",+ "unit": "mA",+ "min": 19,+ "typ": null,+ "max": null,+ "conditions": "VFB = 0.5 V, VCOMP = 1 V",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Sink COMP pin current",+ "symbol": "IO SINK",+ "kind": "electrical",+ "unit": "mA",+ "min": 30,+ "typ": null,+ "max": null,+ "conditions": "VFB = 0.7 V, VCOMP = 1 V",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Open-loop voltage gain",+ "symbol": "GV",+ "kind": "electrical",+ "unit": "dB",+ "min": 100,+ "typ": null,+ "max": null,+ "conditions": "",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Synchronization high input voltage",+ "symbol": "VS_IN,HI",+ "kind": "electrical",+ "unit": "V",+ "min": 2,+ "typ": null,+ "max": 3.3,+ "conditions": "",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Synchronization low input voltage",+ "symbol": "VS_IN,LO",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 1,+ "conditions": "",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Input pulse width",+ "symbol": "tS_IN_PW",+ "kind": "electrical",+ "unit": "ns",+ "min": 100,+ "typ": null,+ "max": null,+ "conditions": "VS_IN,HI = 3 V, VS_IN,LO = 0 V",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Input pulse width",+ "symbol": "tS_IN_PW",+ "kind": "electrical",+ "unit": "ns",+ "min": 300,+ "typ": null,+ "max": null,+ "conditions": "VS_IN,HI = 2 V, VS_IN,LO = 1 V",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Slave sink current",+ "symbol": "ISYNCH,LO",+ "kind": "electrical",+ "unit": "mA",+ "min": 0.7,+ "typ": null,+ "max": 1,+ "conditions": "VSYNCH = 2.9 V",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Master output amplitude",+ "symbol": "VS_OUT,HI",+ "kind": "electrical",+ "unit": "V",+ "min": 2,+ "typ": null,+ "max": null,+ "conditions": "ISOURCE = 4.5 mA",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Turn-on VCC threshold",+ "symbol": "VCCON",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 4.5,+ "max": null,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "MOSFET on-resistance",+ "symbol": "RDSON",+ "kind": "electrical",+ "unit": "mΩ",+ "min": null,+ "typ": 200,+ "max": 400,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "FSW pin voltage",+ "symbol": "VFSW",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": 1.254,+ "max": null,+ "conditions": "",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Soft-start duration",+ "symbol": "TSS",+ "kind": "electrical",+ "unit": "ms",+ "min": null,+ "typ": 2,+ "max": null,+ "conditions": "FSW = 1 MHz, R FSW = 33 kΩ",+ "source_page": 6,+ "source": "datasheet"+ },+ {+ "name": "Output pulse width",+ "symbol": "tS_OUT_PW",+ "kind": "electrical",+ "unit": "ns",+ "min": null,+ "typ": 110,+ "max": null,+ "conditions": "SYNCH floating",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Thermal shutdown",+ "symbol": "TSHDN",+ "kind": "electrical",+ "unit": "°C",+ "min": null,+ "typ": 150,+ "max": null,+ "conditions": "",+ "source_page": 7,+ "source": "datasheet"+ },+ {+ "name": "Thermal shutdown hysteresis",+ "symbol": "",+ "kind": "electrical",+ "unit": "°C",+ "min": null,+ "typ": 30,+ "max": null,+ "conditions": "",+ "source_page": 7,+ "source": "datasheet"+ }+ ] } }, "variants": [],@@ -220,4 +719,4 @@ "visibility": { "public": true }-}+}