component
CJ431B
Public Made by Adomby adom
Changjing Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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cj431b: specified limits as data (metadata.characteristics, 19 rows from the datasheet)
2 files changed
+262−1
README.md+26@@ -21,6 +21,32 @@ CJ431B from Changjing, in a SOT-23. Pinout and pin descriptions extracted from t | Category | Power Management (PMIC) | | Pins | 3 | +## Electrical characteristics++Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).++| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |+|---|---|---|---|---|---|---|---|+| Reference input voltage | Vref | 2.483 | 2.495 | 2.508 | V | VKA=VREF, IKA=10mA | 2 |+| Deviation of reference input voltage over temperature (note) | ΔVref/ΔT | | 8 | 17 | mV | VKA=VREF, IKA=10mA; note TMIN=-25℃, TMAX=+125℃ | 2 |+| Ratio of change in reference input voltage to change in cathode voltage | ΔVref/ΔVKA | | -1 | -2.7 | mV/V | IKA=10mA; ΔVKA=10V~VREF | 2 |+| Ratio of change in reference input voltage to change in cathode voltage | ΔVref/ΔVKA | | -0.4 | -2 | mV/V | IKA=10mA; ΔVKA=36V~10V | 2 |+| Reference input current | Iref | | 0.5 | 1.2 | μA | IKA=10mA, R1=10kΩ, R2=∞ | 2 |+| Deviation of reference input current over full temperature range | ΔIref/ΔT | | 0.4 | 1.2 | μA | IKA=10mA, R1=10kΩ, R2=∞; full temperature range | 2 |+| Minimum cathode current for regulation | IKA(min) | | 0.08 | 0.3 | mA | VKA=VREF | 2 |+| Off-state cathode current | IKA(OFF) | | 0.01 | 0.8 | μA | VKA=36V, VREF=0 | 2 |+| Dynamic impedance | ZKA | | 0.1 | 0.37 | Ω | VKA=VREF, IKA=0.2 to 100mA, f≤1.0kHz | 2 |+| Temperature coefficient (features) | | | 25 | | ppm/°C | | 1 |+| Cathode Voltage | VKA | | | 40 | V | | 1 |+| Cathode Current Range (Continuous) | IKA | -100 | | 150 | mA | Continuous | 1 |+| Reference Input Current Range | Iref | 0.05 | | 10 | mA | | 1 |+| Power Dissipation | PD | | | 300 | mW | | 1 |+| Lead Temperature | T | | | 260 | ℃ | 1.6mm aside from the case, 10 seconds | 1 |+| Operating Ambient Temperature Range | Tj | -40 | | 125 | ℃ | | 1 |+| Storage Temperature Range | Tstg | -65 | | 150 | ℃ | | 1 |+| ESD (HBM) | VESD | | | 2.5 | kV | HBM | 1 |+| Thermal Resistance from Junction to Ambient | RθJA | | 417 | | ℃/W | | 1 |+ ## CAD (KiCad official) - Symbol: `CJ431B`
page.json+236−1@@ -147,6 +147,241 @@ "Package": "SOT-23", "Category": "Power Management (PMIC)", "Pins": "3"+ },+ "characteristics": {+ "version": 1,+ "source": "datasheet",+ "datasheet_sha256": "ee6071469d503f9f",+ "rows": [+ {+ "name": "Reference input voltage",+ "symbol": "Vref",+ "kind": "electrical",+ "unit": "V",+ "min": 2.483,+ "typ": 2.495,+ "max": 2.508,+ "conditions": "VKA=VREF, IKA=10mA",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Deviation of reference input voltage over temperature (note)",+ "symbol": "ΔVref/ΔT",+ "kind": "electrical",+ "unit": "mV",+ "min": null,+ "typ": 8,+ "max": 17,+ "conditions": "VKA=VREF, IKA=10mA; note TMIN=-25℃, TMAX=+125℃",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Ratio of change in reference input voltage to change in cathode voltage",+ "symbol": "ΔVref/ΔVKA",+ "kind": "voltage_coefficient",+ "unit": "mV/V",+ "min": null,+ "typ": -1,+ "max": -2.7,+ "conditions": "IKA=10mA; ΔVKA=10V~VREF",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Ratio of change in reference input voltage to change in cathode voltage",+ "symbol": "ΔVref/ΔVKA",+ "kind": "voltage_coefficient",+ "unit": "mV/V",+ "min": null,+ "typ": -0.4,+ "max": -2,+ "conditions": "IKA=10mA; ΔVKA=36V~10V",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Reference input current",+ "symbol": "Iref",+ "kind": "electrical",+ "unit": "μA",+ "min": null,+ "typ": 0.5,+ "max": 1.2,+ "conditions": "IKA=10mA, R1=10kΩ, R2=∞",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Deviation of reference input current over full temperature range",+ "symbol": "ΔIref/ΔT",+ "kind": "electrical",+ "unit": "μA",+ "min": null,+ "typ": 0.4,+ "max": 1.2,+ "conditions": "IKA=10mA, R1=10kΩ, R2=∞; full temperature range",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Minimum cathode current for regulation",+ "symbol": "IKA(min)",+ "kind": "electrical",+ "unit": "mA",+ "min": null,+ "typ": 0.08,+ "max": 0.3,+ "conditions": "VKA=VREF",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Off-state cathode current",+ "symbol": "IKA(OFF)",+ "kind": "electrical",+ "unit": "μA",+ "min": null,+ "typ": 0.01,+ "max": 0.8,+ "conditions": "VKA=36V, VREF=0",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Dynamic impedance",+ "symbol": "ZKA",+ "kind": "electrical",+ "unit": "Ω",+ "min": null,+ "typ": 0.1,+ "max": 0.37,+ "conditions": "VKA=VREF, IKA=0.2 to 100mA, f≤1.0kHz",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Temperature coefficient (features)",+ "symbol": "",+ "kind": "temperature_coefficient",+ "unit": "ppm/°C",+ "min": null,+ "typ": 25,+ "max": null,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Cathode Voltage",+ "symbol": "VKA",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 40,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Cathode Current Range (Continuous)",+ "symbol": "IKA",+ "kind": "absolute_maximum",+ "unit": "mA",+ "min": -100,+ "typ": null,+ "max": 150,+ "conditions": "Continuous",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Reference Input Current Range",+ "symbol": "Iref",+ "kind": "absolute_maximum",+ "unit": "mA",+ "min": 0.05,+ "typ": null,+ "max": 10,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Power Dissipation",+ "symbol": "PD",+ "kind": "absolute_maximum",+ "unit": "mW",+ "min": null,+ "typ": null,+ "max": 300,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Lead Temperature",+ "symbol": "T",+ "kind": "absolute_maximum",+ "unit": "℃",+ "min": null,+ "typ": null,+ "max": 260,+ "conditions": "1.6mm aside from the case, 10 seconds",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Operating Ambient Temperature Range",+ "symbol": "Tj",+ "kind": "absolute_maximum",+ "unit": "℃",+ "min": -40,+ "typ": null,+ "max": 125,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Storage Temperature Range",+ "symbol": "Tstg",+ "kind": "absolute_maximum",+ "unit": "℃",+ "min": -65,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "ESD (HBM)",+ "symbol": "VESD",+ "kind": "absolute_maximum",+ "unit": "kV",+ "min": null,+ "typ": null,+ "max": 2.5,+ "conditions": "HBM",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Thermal Resistance from Junction to Ambient",+ "symbol": "RθJA",+ "kind": "thermal",+ "unit": "℃/W",+ "min": null,+ "typ": 417,+ "max": null,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ }+ ] } }, "variants": [],@@ -188,4 +423,4 @@ "visibility": { "public": true }-}+}