# LM27341QMYX

**Texas Instruments** · DC-DC Converters · MSOP-10-EP

LM27341QMYX from Texas Instruments, in a MSOP-10-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SW | output | Output switch node that connects to the inductor, catch diode and bootstrap capacitor; recommended SW voltage range is -0.5 V to 20 V. |
| 2 | SW | output | Output switch node that connects to the inductor, catch diode and bootstrap capacitor; recommended SW voltage range is -0.5 V to 20 V. |
| 3 | BOOST | input | Boost voltage input that drives the internal NMOS control switch, with a bootstrap capacitor connected between BOOST and SW; recommended Boost-to-SW voltage is 3 V to 5.5 V. |
| 4 | EN | input | Enable control input where logic high enables operation; do not let this pin float or exceed VIN + 0.3 V. |
| 5 | SYNC | input | Frequency synchronization input driven by an external clock or pulse train (synchronizable from 1 MHz to 2.35 MHz), or grounded to use the internal clock; SYNC voltage is limited to 6 V absolute maximum. |
| 6 | FB | input | Feedback input that connects to the external resistor divider setting the output voltage; FB voltage is limited to 3 V absolute maximum. |
| 7 | GND | power_in | Signal and power ground; place the bottom resistor of the feedback network as close as possible to this pin for accurate regulation. |
| 8 | AVIN | power_in | Supply voltage for the control circuitry, recommended range 3 V to 20 V. |
| 9 | PVIN | power_in | Supply voltage for the output power stage, recommended range 3 V to 20 V, with a bypass capacitor connected to this pin. |
| 10 | PVIN | power_in | Supply voltage for the output power stage, recommended range 3 V to 20 V, with a bypass capacitor connected to this pin. |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | MSOP-10-EP |
| Category | Power Management (PMIC) |
| Pins | 11 |

## CAD (KiCad official)

- Symbol: `LM27341QMYX`
- Footprint: `Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm`
- 3D model: MSOP-10-EP (KiCad packages3D, STEP)
- 3D model files: `lm27341qmyx-etched.step` / `lm27341qmyx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm27341qmyx.step` / `lm27341qmyx.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm27342) (55 pp, sha256 `cef0ca904e2ee532`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/lm27341qmyx-datasheet.pdf)