ICL7660M

@@ -0,0 +1,50 @@+# ICL7660M++**HGSEMI** · DC-DC Converters · SOP-8++ICL7660M 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 | N.C | unconnected | No internal connection. Leave floating or tie to ground; no functional role in the charge-pump operation. |+| 2 | CAP+ | passive | Positive terminal of the external flying (pump) capacitor C1 (typ. 10 µF). During the positive half-cycle, internal switches S1/S3 connect this pin to V+ to charge C1 up to V+. |+| 3 | GND | power_in | Device ground / negative supply return. Also the 0 V reference against which V+ (input) and VOUT (negative output) are measured. |+| 4 | CAP- | passive | Negative terminal of the external flying (pump) capacitor C1. During the negative half-cycle, internal switches S2/S4 connect this pin to VOUT so C1 transfers its charge into the reservoir capacitor at VOUT. |+| 5 | VOUT | power_out | Negative-voltage output. Delivers VOUT = -(V+); requires an external 10 µF reservoir capacitor to GND. Absolute-max range: GND to VOUT ≤ 9 V; typical ROUT ≈ 55 Ω at V+ = 5 V, IL = 20 mA, fOSC = 5 kHz. |+| 6 | LV | input | Low-voltage operation control input. Tie to GND when V+ ≤ 3.5 V to bypass the internal regulator and allow operation down to 1.5 V; leave floating (open) when V+ > 3.5 V. Max input current ILV = 20 µA. |+| 7 | OSC | bidirectional | Oscillator pin. Internally driven at ~10 kHz (typ.) with COSC = 1 pF, V+ = 5 V; may be tied to an external capacitor to lower fOSC or driven from an external clock/oscillator to override the internal timing. Oscillator source impedance ROSC ≈ 100 kΩ at V+ = 5 V (≈ 1 MΩ at V+ = 2 V). |+| 8 | V+ | power_in | Positive supply input, 1.5 V to 9 V (absolute-max V+ to GND = 9 V). Bypass to GND with a 10 µF capacitor. Typical quiescent current IV+ ≈ 65 µA at V+ = 5 V, no load, OSC/LV open. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `ICL7660MM/TR`+- `ICL7660MN`+- `ICL7660MMM/TR`+- `ICL7660MDQ3/TR`++## CAD (KiCad official)++- Symbol: `ICL7660M`+- 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/icl7660m-datasheet.pdf) (11 pp, sha256 `f07266afe8919114`, 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/icl7660m-datasheet.pdf)

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