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LT4363IMS-2#TRPBF
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Analog Devices Surge Protection Devices (SPDs), MSOP-12. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+63@@ -0,0 +1,63 @@+# LT4363IMS-2#TRPBF++**Analog Devices** · Surge Protection Devices (SPDs) · MSOP-12++LT4363IMS-2#TRPBF from Analog Devices, in a MSOP-12. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | FB | input | Voltage regulator feedback input. Connect to the center tap of the resistive divider from OUT to GND; during an overvoltage event, GATE is controlled to maintain 1.275V at FB. Connect FB to GND to disable the OV clamp. |+| 2 | OUT | input | Output voltage sense input. Senses the voltage at the source of the external N-channel MOSFET. The difference (VCC - OUT) sets the fault timer current; when this difference drops below 0.5V the ENOUT pin goes high impedance. |+| 3 | SNS | input | Current sense input. Connect to the input of the current sense resistor. The internal current limit amplifier controls GATE to limit the SNS-to-OUT voltage to 50mV (25mV in severe fault when OUT is below 2V). |+| 4 | GATE | output | N-channel MOSFET gate drive output. Pulled up by an internal charge pump (typ. -30uA) to ~13V above OUT; a 14V internal clamp limits the drive during faults. Both the voltage and current amplifiers control GATE to regulate OUT and limit load current. |+| 5 | VCC | power_in | Positive supply voltage input. Normal operation 4V to 80V; can be pulled below ground by up to 60V during reverse-battery without damage. Pulling SHDN low reduces supply current to ~7uA. |+| 6 | SHDN | input | Active-low shutdown control input. Pulling below the 0.4V threshold shuts the part down to a low-current mode; pull above 2.1V (or disconnect) to enable. Withstands up to 100V above GND or -60V below GND. |+| 7 | OV | input | Overvoltage comparator input (LT4363-2 only). When OV is above its 1.275V threshold the fault retry function is inhibited even after the TMR pin has cycled; GATE is allowed to turn back on when OV falls below the hysteretic threshold. Connect to GND if unused. |+| 8 | UV | input | Undervoltage comparator input. When UV is below the 1.275V threshold, GATE is pulled down with ~1mA; when UV rises above the threshold plus hysteresis, the internal charge pump is enabled and GATE rises. Connect to VCC if unused. |+| 9 | GND | power_in | Device ground. |+| 10 | FLT | output | Open-collector fault output (active-low). Pulls low when TMR reaches 1.275V, warning that the pass MOSFET is about to be turned off due to overvoltage (voltage fault) or overcurrent. Internal NPN sinks up to 2mA. |+| 11 | ENOUT | output | Open-collector enable output. Goes high impedance when OUT is within 0.5V of VCC and >=3V above GND, indicating the external MOSFET is fully on. State is latched until OUT drops below 2V, resetting the latch. Internal NPN sinks up to 2mA. |+| 12 | TMR | passive | Fault timer input. Connect a capacitor (>=10nF) between this pin and GND to set the early warning, fault turn-off and cool-down times. Charging current during a fault depends on VCC - OUT and is roughly 5x larger for overcurrent than for overvoltage; thresholds 1.275V (warning), 1.375V (gate off), 0.5V (retry, LT4363-2). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Analog Devices |+| Package | MSOP-12 |+| Category | Circuit Protection |+| Pins | 12 |++## Ordering variants++Same part, different packaging or reel option.++- `LT4363IMS-2#TRPBFCMS-2`+- `LT4363IMS-2#TRPBFHMS-2`+- `LT4363IMS-2#TRPBF`+- `LT4363IMS-2#TRPBFMPMS-2`+- `LT4363IMS-2#TRPBFCDE-2`+- `LT4363IMS-2#TRPBFIDE-2`+- `LT4363IMS-2#TRPBFHDE-2`+- `LT4363IMS-2#TRPBFCS-2`+- `LT4363IMS-2#TRPBFHS-2`+- `LT4363IMS-2#TRPBFIS-2`+- `LT4363IMS-2#TRPBFMPS-2`++## CAD (KiCad official)++- Symbol: `LT4363IMS-2#TRPBF`+- Footprint: `Package_SO:MSOP-12_3x4.039mm_P0.65mm`+- 3D model: MSOP-12 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886309565423616) (24 pp, sha256 `b8b5f10acef778d3`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lt4363ims-2-trpbf-datasheet.pdf)
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