# ICL7660N

**HGSEMI** · DC-DC Converters · DIP-8

ICL7660N from HGSEMI, in a DIP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | N.C | unconnected | No internal connection (listed as 空, empty), so this pin is left unconnected. |
| 2 | CAP+ | passive | Positive terminal of the external energy-storage (pump) capacitor, which the datasheet says requires three small 10 µF external capacitors in total. |
| 3 | GND | power_in | Power ground pin, the reference for V+ and the other pins (V+ to GND maximum rating is 9 V). |
| 4 | CAP- | passive | Negative terminal of the external energy-storage (pump) capacitor, which switches between GND and VOUT during operation. |
| 5 | VOUT | output | Negative voltage output that is the inverse of V+ (for example, VOUT = -5 V when V+ = 5 V); the GND to VOUT maximum rating is 9 V. |
| 6 | LV | input | Low-voltage control pin that must be tied to GND when V+ is 3.5 V or below and left open when V+ is above 3.5 V; its input voltage is limited to -0.3 V to V+ +0.3 V and its input current to 20 µA. |
| 7 | OSC | passive | Oscillator pin whose external capacitor COSC sets the switching frequency; its input voltage is limited to -0.3 V to V+ +0.3 V. |
| 8 | V+ | power_in | Positive supply input, specified for 1.5 V to 9 V with an absolute maximum of 9 V to GND. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | DIP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating current (supply current) | IV+ |  | 65 | 175 | uA | V+ = 5.0V, IL=0mA, RL=∝, OSC/LV open | 4 |
| Input voltage | V+ | 3 |  | 8 | V | RL=10k, OSC/LV open | 4 |
| Input voltage | V+ | 1.5 |  | 3.5 | V | RL=10k LV=GND, OSC open | 4 |
| Output resistance | ROUT |  | 55 | 100 | Ω | fOSC=5kHz, V+ = 5.0V, IL=20mA, LV open | 4 |
| Power conversion efficiency | ηP | 95 | 98 |  | % | RL=5kΩ, fOSC=5kHz, LV open | 4 |
| Voltage conversion efficiency | ηV | 99 | 99.9 |  | %/V | RL=∞, OSC/LV open | 4 |
| Input voltage V+ to GND (absolute maximum) | V+ |  |  | 9 | V | V+ to GND | 4 |
| Output voltage (absolute maximum) | Vout |  |  | 9 | V | GND to VOUT | 4 |
| Pin6/Pin7 input voltage (absolute maximum) | Vin | -0.3 |  |  | V | Pin6/Pin7 | 4 |
| LV port input current (absolute maximum) | ILV |  |  | 20 | uA | LV port | 4 |
| Operating temperature | TA | -25 |  | 60 | ℃ |  | 4 |
| Storage temperature | TS | -65 |  | 150 | ℃ |  | 4 |
| Lead soldering temperature | TW |  |  | 260 | ℃ | 10s | 4 |

## CAD (KiCad official)

- Symbol: `ICL7660N`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files: `icl7660n-etched.step` / `icl7660n-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `icl7660n.step` / `icl7660n.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758141746117394432) (11 pp, sha256 `f07266afe8919114`, retrieved 2026-10-15, 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 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (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/icl7660n-datasheet.pdf)