component
UC2844BD1R2G
Public Made by Adomby adom
onsemi AC-DC Controllers and Regulators, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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page.json+8−5@@ -38,7 +38,7 @@ "number": "2", "name": "Voltage Feedback", "type": "input",- "description": "Inverting input of the internal error amplifier. Normally connected to the switching-supply output through a resistor divider; internal reference is 2.5 V. Input bias current typically -0.1 \u00b5A, max -1.0 \u00b5A (UC284xB) at V_FB = 5.0 V."+ "description": "Inverting input of the internal error amplifier. Normally connected to the switching-supply output through a resistor divider; internal reference is 2.5 V. Input bias current typically -0.1 µA, max -1.0 µA (UC284xB) at V_FB = 5.0 V." }, { "number": "3",@@ -50,7 +50,7 @@ "number": "4", "name": "RT/CT", "type": "passive",- "description": "Oscillator timing pin. An external resistor R_T from Vref to this pin and a timing capacitor C_T from this pin to GND set the oscillator frequency (f_OSC \u2248 1.72 / (R_T\u00b7C_T) for R_T > 5 k\u03a9). Also sets the maximum output duty cycle (~50% max via internal blanking on alternate cycles)."+ "description": "Oscillator timing pin. An external resistor R_T from Vref to this pin and a timing capacitor C_T from this pin to GND set the oscillator frequency (f_OSC ≈ 1.72 / (R_T·C_T) for R_T > 5 kΩ). Also sets the maximum output duty cycle (~50% max via internal blanking on alternate cycles)." }, { "number": "5",@@ -68,13 +68,13 @@ "number": "7", "name": "VCC", "type": "power_in",- "description": "Positive supply input for control logic and gate driver. UC2844B UVLO turn-on = 16 V typ, turn-off = 10 V typ (large hysteresis for bootstrap start-up). Startup current 0.3 mA typ; operating current 12 mA typ. Absolute max 36 V (internally clamped by zener; limit I_CC + I_Z \u2264 30 mA)."+ "description": "Positive supply input for control logic and gate driver. UC2844B UVLO turn-on = 16 V typ, turn-off = 10 V typ (large hysteresis for bootstrap start-up). Startup current 0.3 mA typ; operating current 12 mA typ. Absolute max 36 V (internally clamped by zener; limit I_CC + I_Z ≤ 30 mA)." }, { "number": "8", "name": "Vref", "type": "power_out",- "description": "Trimmed 5.0 V reference output (\u00b11% at 25 \u00b0C, I_O = 1.0 mA). Sources up to ~20 mA for external circuitry; internally current-limited to -85 mA (typ) short-circuit. Bypass to GND with a low-ESR ceramic capacitor."+ "description": "Trimmed 5.0 V reference output (±1% at 25 °C, I_O = 1.0 mA). Sources up to ~20 mA for external circuitry; internally current-limited to -85 mA (typ) short-circuit. Bypass to GND with a low-ESR ceramic capacitor." } ], "provenance": {@@ -138,5 +138,8 @@ "docs/uc2844bd1r2g-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ]+ ],+ "visibility": {+ "public": true+ } }