component
LM25576MHX
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
page.json+12−9@@ -54,13 +54,13 @@ "number": "1", "name": "VCC", "type": "power_in",- "description": "Bias regulator output providing regulated 7V nominal (or VIN direct when below 9V) with 25mA current limit; requires 0.1\u00b5F to 1\u00b5F ceramic bypass capacitor and accepts external 7.5V-14V supply to reduce IC power dissipation."+ "description": "Bias regulator output providing regulated 7V nominal (or VIN direct when below 9V) with 25mA current limit; requires 0.1µF to 1µF ceramic bypass capacitor and accepts external 7.5V-14V supply to reduce IC power dissipation." }, { "number": "2", "name": "SD", "type": "input",- "description": "Shutdown or UVLO input controlling device state: below 0.7V activates low-power shutdown (48-85\u00b5A), 0.7V to 1.225V enables standby with VCC regulator active, above 1.225V enables normal switching with internal 5\u00b5A pull-up current source."+ "description": "Shutdown or UVLO input controlling device state: below 0.7V activates low-power shutdown (48-85µA), 0.7V to 1.225V enables standby with VCC regulator active, above 1.225V enables normal switching with internal 5µA pull-up current source." }, { "number": "3",@@ -90,13 +90,13 @@ "number": "7", "name": "FB", "type": "input",- "description": "Feedback signal input from regulated output connected to error amplifier inverting input; internal 1.225V precision reference voltage with \u00b11.5% accuracy and 10nA bias current sets regulation threshold."+ "description": "Feedback signal input from regulated output connected to error amplifier inverting input; internal 1.225V precision reference voltage with ±1.5% accuracy and 10nA bias current sets regulation threshold." }, { "number": "8", "name": "RT", "type": "input",- "description": "Oscillator frequency setting input using single external resistor connected between RT and AGND pins to establish switching frequency from 50kHz to 1MHz per formula RT = (1/(F) - 580\u00d710\u207b\u2079)/(135\u00d710\u207b\u00b9\u00b2)."+ "description": "Oscillator frequency setting input using single external resistor connected between RT and AGND pins to establish switching frequency from 50kHz to 1MHz per formula RT = (1/(F) - 580×10⁻⁹)/(135×10⁻¹²)." }, { "number": "9",@@ -114,7 +114,7 @@ "number": "11", "name": "SS", "type": "output",- "description": "Soft start output with external capacitor and 10\u00b5A internal current source setting error amplifier reference ramp rise time constant; held low during standby mode, VCC UVLO, and thermal shutdown events (165\u00b0C threshold)."+ "description": "Soft start output with external capacitor and 10µA internal current source setting error amplifier reference ramp rise time constant; held low during standby mode, VCC UVLO, and thermal shutdown events (165°C threshold)." }, { "number": "12",@@ -138,13 +138,13 @@ "number": "15", "name": "IS", "type": "input",- "description": "Current sensing input measuring recirculation diode anode current through internal 42m\u03a9 sense resistor with sample-and-hold circuit capturing DC level at end of off-time; provides 0.5V/A transfer function for simulated current ramp."+ "description": "Current sensing input measuring recirculation diode anode current through internal 42mΩ sense resistor with sample-and-hold circuit capturing DC level at end of off-time; provides 0.5V/A transfer function for simulated current ramp." }, { "number": "16", "name": "IS", "type": "input",- "description": "Current sensing input measuring recirculation diode anode current through internal 42m\u03a9 sense resistor with sample-and-hold circuit capturing DC level at end of off-time; provides 0.5V/A transfer function for simulated current ramp."+ "description": "Current sensing input measuring recirculation diode anode current through internal 42mΩ sense resistor with sample-and-hold circuit capturing DC level at end of off-time; provides 0.5V/A transfer function for simulated current ramp." }, { "number": "17",@@ -168,7 +168,7 @@ "number": "20", "name": "BST", "type": "power_in",- "description": "Bootstrap capacitor input requiring 0.022\u00b5F external ceramic capacitor connected between BST and SW pins with minimum-length PCB traces; capacitor charged from VCC through internal bootstrap diode during buck switch off-time."+ "description": "Bootstrap capacitor input requiring 0.022µF external ceramic capacitor connected between BST and SW pins with minimum-length PCB traces; capacitor charged from VCC through internal bootstrap diode during buck switch off-time." }, { "number": "21",@@ -254,5 +254,8 @@ "docs/lm25576mhx-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ]+ ],+ "visibility": {+ "public": true+ } }