# ICL7660CSA

**TDSEMIC** · Charge Pumps · SOP-8

ICL7660CSA from TDSEMIC, 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 | BOOST | input | Oscillator frequency boost control; connect to V+ to increase internal oscillator frequency ×6; leave open (NC) when using an external oscillator signal at OSC. |
| 2 | CAP+ | passive | Positive terminal connection for the external charge-pump flying capacitor. |
| 3 | GND | power_in | Ground reference; the negative terminal of the reservoir capacitor connects here in most applications. |
| 4 | CAP- | passive | Negative terminal connection for the external charge-pump flying capacitor. |
| 5 | VOUT | power_out | Inverted (negative) voltage output; the positive terminal of the reservoir capacitor connects here in most applications. |
| 6 | LV | input | Low-voltage operation select; connect to GND when supply voltage is below 3.5 V to maintain proper operation. |
| 7 | OSC | input | Oscillator frequency control input; connect an external capacitor to GND at this pin to reduce the internal oscillator frequency below its default. |
| 8 | V+ | power_in | Positive supply voltage input, 1.5 V to 10 V; also serves as the chip's internal reference connection point. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TDSEMIC |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `ICL7660CSA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `icl7660csa-etched.step` / `icl7660csa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `icl7660csa.step` / `icl7660csa.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [TDSEMIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618862581960626176) (5 pp, sha256 `d4dcedcc09abdb78`, retrieved 2026-09-21, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-sonnet-4-6` (vision), consensus `claude-opus-4-7` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/icl7660csa-datasheet.pdf)