SSP9461

@@ -0,0 +1,47 @@+# SSP9461++**Shanghai Siproin Microelectronics** · DC-DC Converters · SOP-8-EP++SSP9461 from Shanghai Siproin Microelectronics, in a SOP-8-EP. 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 | VIN | power_in | Input supply pin (4.5V to 60V, absolute max 62V). Powers all internal control circuits and the high-side MOSFET. Requires a decoupling capacitor to ground placed close to the pin to reduce switching spikes. |+| 2 | NC | unconnected | No connection. Leave floating or tie to ground per PCB layout preference. |+| 3 | EN | input | Enable input. Pull below the enable-off threshold (Venf ≈ 1.0V) to disable the converter; pull above the enable-on threshold (Venr ≈ 1.35V) to enable. Connect a 100kΩ resistor to VIN for automatic turn-on. EN input current is ~3.1μA at 2V and ~0.1μA at 0V. |+| 4 | FB | input | Feedback input to the internal error amplifier (reference 0.812V typ). Set the output voltage via a resistor divider from VOUT to FB. When FB drops below ~250mV (short-circuit), the reentry circuit reduces the switching frequency (~150kHz) for reliable current-limit protection. |+| 5 | NC | unconnected | No connection. Leave floating or tie to ground per PCB layout preference. |+| 6 | GND | power_in | Ground return for the IC. Should be connected as close as possible to the output capacitor return and avoid high-current switching paths. The ESOP-8 exposed thermal pad should be tied to this ground for improved heat dissipation. |+| 7 | BST | power_out | Bootstrap capacitor pin. Provides the floating positive supply for the internal high-side MOSFET gate driver. Connect a bypass capacitor (typ 100nF) between BST and SW. Absolute max BST-to-SW voltage is 6.0V. |+| 8 | SW | output | Switch node, drain of the internal high-side power MOSFET (1Ω RDS(on)). Connects to the external inductor and to a low-VF Schottky freewheeling diode to ground. Absolute max range −0.3V to VIN(MAX)+0.3V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shanghai Siproin Microelectronics |+| Package | SOP-8-EP |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `SSP9461`++## CAD (KiCad official)++- Symbol: `SSP9461`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8-EP (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shanghai Siproin Microelectronics datasheet](docs/ssp9461-datasheet.pdf) (8 pp, sha256 `555ed7ce759feb01`, 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/ssp9461-datasheet.pdf)

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