component
MT3540
Public Made by Adomby adom
Aerosemi DC-DC Converters, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
orderable attributes: rebuild .lbr with adom-lbr 2.18.0 so MPN, MANUFACTURER and the distributor part numbers reach <technology> (LCSC_PN C181744). The published library carried no attributes at all, so a BOM had nothing to buy from. Distributor PNs matched on exact MPN AND corroborating manufacturer.
2 files changed
+27−7
mt3540.lbr+20−2@@ -59,6 +59,18 @@ <smd name="3" x="-1.1375" y="-0.9500" dx="1.3250" dy="0.6000" layer="1"/> <smd name="4" x="1.1375" y="-0.9500" dx="1.3250" dy="0.6000" layer="1"/> <smd name="5" x="1.1375" y="0.9500" dx="1.3250" dy="0.6000" layer="1"/>+ <polygon width="0.1200" layer="21">+ <vertex x="-1.4500" y="1.5100"/>+ <vertex x="-1.6900" y="1.8400"/>+ <vertex x="-1.2100" y="1.8400"/>+ </polygon>+ <polygon width="0.1000" layer="51">+ <vertex x="-0.4000" y="1.4500"/>+ <vertex x="0.8000" y="1.4500"/>+ <vertex x="0.8000" y="-1.4500"/>+ <vertex x="-0.8000" y="-1.4500"/>+ <vertex x="-0.8000" y="1.0500"/>+ </polygon> <wire x1="-0.9100" y1="1.5600" x2="0.9100" y2="1.5600" width="0.1200" layer="21"/> <wire x1="-0.9100" y1="1.5100" x2="-0.9100" y2="1.5600" width="0.1200" layer="21"/> <wire x1="-0.9100" y1="-1.5600" x2="-0.9100" y2="-1.5100" width="0.1200" layer="21"/>@@ -68,7 +80,7 @@ <wire x1="0.9100" y1="-1.5600" x2="-0.9100" y2="-1.5600" width="0.1200" layer="21"/> <text x="0" y="2.212" size="1.27" layer="25" align="bottom-center">>NAME</text> <text x="0" y="-2.212" size="1.27" layer="27" align="top-center">>VALUE</text>-<!--adom-pin1--><polygon width="0.0500" layer="21"><vertex x="-1.4500" y="1.5100"/><vertex x="-1.6900" y="1.8400"/><vertex x="-1.2100" y="1.8400"/></polygon></package>+</package> </packages> <symbols> <symbol name="MT3540">@@ -100,7 +112,13 @@ <connect gate="G$1" pin="VIN" pad="5"/> <connect gate="G$1" pin="EN" pad="4"/> </connects>- <technologies><technology name=""/></technologies>+ <technologies>+ <technology name="">+ <attribute name="MPN" value="MT3540" constant="no"/>+ <attribute name="MANUFACTURER" value="Aerosemi" constant="no"/>+ <attribute name="LCSC_PN" value="C181744" constant="no"/>+ </technology>+ </technologies> </device> </devices> </deviceset>
page.json+7−5@@ -26,13 +26,15 @@ "model_3d_step": "mt3540.step", "lbr": "mt3540.lbr" },- "distributor_links": {},+ "distributor_links": {+ "lcsc": "C181744"+ }, "pins": [ { "number": "1", "name": "SW", "type": "output",- "description": "Power switch output - drain of the internal 0.5Ω, 1.5A N-channel power MOSFET. Connect the boost inductor and Schottky rectifier here. Node swings between GND and up to 28V; absolute max 30V. Keep the SW copper area small to minimize EMI."+ "description": "Power switch output - drain of the internal 0.5\u03a9, 1.5A N-channel power MOSFET. Connect the boost inductor and Schottky rectifier here. Node swings between GND and up to 28V; absolute max 30V. Keep the SW copper area small to minimize EMI." }, { "number": "2",@@ -44,19 +46,19 @@ "number": "3", "name": "FB", "type": "input",- "description": "Feedback input to the internal error amplifier. Regulates to VREF = 1.20V (MT3540), 1.23V (-F23) or 1.25V (-F25). Set VOUT with a resistor divider: VOUT = VREF × (1 + R1/R2). Bias current ≈ −10nA (max −50nA). Absolute max −0.3V to 6V."+ "description": "Feedback input to the internal error amplifier. Regulates to VREF = 1.20V (MT3540), 1.23V (-F23) or 1.25V (-F25). Set VOUT with a resistor divider: VOUT = VREF \u00d7 (1 + R1/R2). Bias current \u2248 \u221210nA (max \u221250nA). Absolute max \u22120.3V to 6V." }, { "number": "4", "name": "EN", "type": "input",- "description": "Enable / on-off control. VIH ≥ 1.5V turns the converter on; VIL ≤ 0.4V shuts it down (IQ ≈ 0.1µA). Tie to VIN for automatic startup when unused. Absolute max −0.3V to 6V."+ "description": "Enable / on-off control. VIH \u2265 1.5V turns the converter on; VIL \u2264 0.4V shuts it down (IQ \u2248 0.1\u00b5A). Tie to VIN for automatic startup when unused. Absolute max \u22120.3V to 6V." }, { "number": "5", "name": "VIN", "type": "power_in",- "description": "Input supply pin, 2.5V to 5.5V (absolute max 6V). UVLO ≈ 2.2V with 100mV hysteresis. Must be locally bypassed with a low-ESR ceramic capacitor (1µF or larger, X5R/X7R) close to the pin."+ "description": "Input supply pin, 2.5V to 5.5V (absolute max 6V). UVLO \u2248 2.2V with 100mV hysteresis. Must be locally bypassed with a low-ESR ceramic capacitor (1\u00b5F or larger, X5R/X7R) close to the pin." } ], "provenance": {