LMC7660M

@@ -0,0 +1,49 @@+# LMC7660M++**HGSEMI** · DC-DC Converters · SOP-8++LMC7660M from HGSEMI, in a SOP-8. 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 | NC | unconnected | No connection. Leave floating. |+| 2 | CAP+ | passive | Positive terminal of the external charge-pump 'flying' capacitor (typ. 10 uF). Connects internally to the charge-pump switches that transfer charge from V+ to VOUT. |+| 3 | GND | power_in | Ground return. 0 V reference for the input supply and the internal circuitry. |+| 4 | CAP- | passive | Negative terminal of the external charge-pump 'flying' capacitor (typ. 10 uF). Switched between GND and VOUT by the internal MOS switches during the pump cycle. |+| 5 | VOUT | power_out | Regulated inverted output voltage (nominally -V+). Connect the external reservoir capacitor (typ. 10 uF) from VOUT to GND. Output source resistance is typically 55 ohm at IOUT = 20 mA. |+| 6 | LV | input | Low-voltage operation control. Tie to GND to bypass the internal series regulator when V+ is between 1.5V and 3.5V. Leave floating (open) for V+ = 3.5V to 10V to prevent latchup. Max current into LV is 20 uA for V+ > 3.5V. |+| 7 | OSC | bidirectional | Oscillator terminal. Internal RC oscillator runs at ~10 kHz nominal at V+ = 5V. An external capacitor to GND lowers the frequency; alternatively this pin can be driven by an external clock. Oscillator impedance is ~100 kohm at V+ = 5V (~1 Mohm at V+ = 2V). |+| 8 | V+ | power_in | Positive supply input. Operating range 1.5V to 10V; absolute maximum +10.5V. Supply current is typically 170 uA (500 uA max) with no load. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `LMC7660M/TR`+- `LMC7660MLMC7660N`+- `LMC7660MM/TR`++## CAD (KiCad official)++- Symbol: `LMC7660M`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HGSEMI datasheet](docs/lmc7660m-datasheet.pdf) (9 pp, sha256 `fd1d1dedd842535a`, 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/lmc7660m-datasheet.pdf)

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