MIC2176-2YMM

@@ -0,0 +1,53 @@+# MIC2176-2YMM++**Microchip Tech** · DC-DC Converters · MSOP-10++MIC2176-2YMM from Microchip Tech, in a MSOP-10. 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 | HSD | input | High-Side MOSFET Drain Connection (Input). Input of the adaptive on-time control circuitry. Operating range 4.5V to 75V (abs max -0.3V to +76V). Requires a 0.1uF ceramic capacitor between HSD and PGND placed close to the IC. |+| 2 | EN | input | Enable (Input). CMOS-compatible logic-level enable; logic high or floating = enable, logic low = shutdown. In off state VDD supply current drops to ~0.7mA. Logic high >=1.2V, logic low <=0.4V (4.5V<VDD<5.5V). Do not connect EN to HSD. |+| 3 | FB | input | Feedback (Input) to the transconductance amplifier of the control loop. Regulated to 0.8V reference (±1% at 0-85°C, ±1.5% over full temp). A resistor divider from VOUT sets the output voltage. FB bias current typ 5nA (max 500nA). |+| 4 | GND | power_in | Signal ground. Ground return for the VDD bias supply and internal control circuitry. Should be routed separately from PGND (power ground) and joined at a single point. |+| 5 | VDD | power_in | VDD Bias input for the internal reference and control sections. Operating range 4.5V to 5.5V. Requires a 1uF ceramic bypass capacitor from VDD to PGND placed next to the IC. Quiescent current ~1.4mA (max 3mA). |+| 6 | DL | output | Low-Side Gate Drive (Output). High-current gate driver for the external low-side N-channel MOSFET. Output swings from GND to VDD. On-resistance typ 1.2Ω (low) / 1.8Ω (high), driver sourcing/sinking 10mA. |+| 7 | PGND | power_in | Power Ground. Ground return path for the buck converter power stage; connects to the sources of the low-side external N-channel MOSFETs, negative terminals of input capacitors, and negative terminals of output capacitors. Route separately from signal GND with a low-impedance loop. |+| 8 | DH | output | High-Side Gate Drive (Output). High-current gate driver for the external high-side N-channel MOSFET, referenced to the SW node (floating). Swings between SW and BST. A small series resistor between DH and the MOSFET gate can slow turn-on/turn-off. On-resistance typ 2.1Ω (high) / 1.8Ω (low). |+| 9 | SW | input | Switch Node and Current-Sense input. High-current output driver return that connects directly to the switch node (drain of low-side MOSFET / source of high-side MOSFET). Also senses inductor current across the low-side MOSFET RDS(on) during OFF time - use a Kelvin connection to the low-side MOSFET drain for accurate sensing. |+| 10 | BST | power_in | Bootstrap (Output). Bootstrapped supply for the high-side N-channel MOSFET gate driver. Connect a Schottky diode from VDD to BST and a 0.1uF boost capacitor from BST to SW. A small series resistor at BST can slow high-side MOSFET turn-on. Abs max -0.3V to (VSW+6V), -0.3V to +82V vs PGND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Microchip Tech |+| Package | MSOP-10 |+| Category | Power Management (PMIC) |+| Pins | 10 |++## Ordering variants++Same part, different packaging or reel option.++- `MIC2176-2YMM1YMM`+- `MIC2176-2YMM`+- `MIC2176-2YMM3YMM`++## CAD (KiCad official)++- Symbol: `MIC2176-2YMM`+- Footprint: `Package_SO:MSOP-10_3x3mm_P0.5mm`+- 3D model: MSOP-10 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589805360765558784) (31 pp, sha256 `303da73146c17fee`, 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/mic2176-2ymm-datasheet.pdf)

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