H9108

@@ -0,0 +1,41 @@+# H9108++**Shanghai Siproin Microelectronics** · DC-DC Converters · SOT-23-6++H9108 from Shanghai Siproin Microelectronics, in a SOT-23-6. 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 | BS | passive | Bootstrap pin for the high-side N-MOSFET gate driver. A bootstrap capacitor (typically 22nF ceramic) is connected between BS and SW to form a floating supply that boosts the high-side switch gate above VIN. |+| 2 | GND | power_in | Device ground reference. Should be connected to a large copper area for thermal dissipation and to serve as the return for the input capacitor, output capacitor, and feedback divider. |+| 3 | FB | input | Feedback input to the error amplifier. Connect to the center tap of an external resistor divider from VOUT to GND; the regulator servos FB to the internal 0.6V reference (VOUT = 0.6V x (R1+R2)/R2). |+| 4 | EN | input | Enable input. Drive high (VENH >= 1.4V) to enable the converter; drive low (VENL <= 0.9V) to disable and enter micro-power shutdown (~4uA). Can be tied to VIN through a pull-up resistor (e.g. 100k) for auto-start. |+| 5 | IN | power_in | Power supply input, 4V to 18V (absolute max 18V, -0.3V min). Bypass with a low-ESR ceramic capacitor placed close to the pin (typ. 22uF). |+| 6 | SW | output | Switch node output. Common drain of the internal high-side and low-side MOSFETs; connect to the external inductor. Rated -0.3V to (VIN+0.5V); high-side RDS(on) ~100mOhm, low-side ~70mOhm. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shanghai Siproin Microelectronics |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## CAD (KiCad official)++- Symbol: `H9108`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shanghai Siproin Microelectronics datasheet](docs/h9108-datasheet.pdf) (10 pp, sha256 `d888f77e06c51893`, 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/h9108-datasheet.pdf)

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