# ICL7660SIBA

**HARRIS** · Charge Pumps · SOIC-8

ICL7660SIBA from HARRIS, in a SOIC-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 | BOOST | input | Frequency Boost pin; connecting it to V+ raises the oscillator frequency by approximately 3.5 times, lowering output impedance and ripple (10kHz typ free-running vs 35kHz typ with Pin 1 = V+). |
| 2 | CAP+ | passive | Positive terminal of the charge-pump capacitor C1; the + terminal of a polarized C1 must be connected here. |
| 3 | GND | power_in | Ground; the + terminal of reservoir capacitor C2 connects here, and the output must not go more positive than GND to avoid latch-up. |
| 4 | CAP- | passive | Negative terminal of the charge-pump capacitor C1; an optional external Schottky diode from VOUT to CAP- prevents latchup with fast-rising inputs above 5V. |
| 5 | VOUT | power_out | Negative voltage output (-1.5V to -12V for a 1.5V to 12V input) with the reservoir capacitor C2 connected to GND, and it must not go more positive than GND. |
| 6 | LV | input | Low-voltage pin; tie to GND to bypass the internal regulator for supplies below 3.5V, and leave open for supplies above 3.5V (up to 12V) to prevent latchup. |
| 7 | OSC | input | Oscillator terminal; an external capacitor lowers the frequency (nominal 10kHz at 5V) or it may be overdriven by an external clock through a 1kΩ series resistor. |
| 8 | V+ | power_in | Positive supply input, 1.5V to 12V operating range (absolute maximum +13.0V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HARRIS |
| Package | SOIC-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 |
|---|---|---|---|---|---|---|---|
| Supply Current | I+ |  | 80 | 160 | µA | RL = ∞, +25°C, V+ = 5V | 3 |
| Supply Current | I+ |  |  | 180 | µA | -40°C < TA < +85°C | 3 |
| Supply Voltage Range - High | V+H | 3 |  | 12 | V | RL = 10k, LV Open, TMIN < TA < TMAX | 3 |
| Supply Voltage Range - Low | V+L | 1.5 |  | 3.5 | V | RL = 10k, LV to GND, TMIN < TA < TMAX | 3 |
| Output Source Resistance | ROUT |  | 60 | 100 | Ω | IOUT = 20mA | 3 |
| Output Source Resistance | ROUT |  |  | 120 | Ω | IOUT = 20mA, -25°C < TA < +85°C | 3 |
| Output Source Resistance | ROUT |  |  | 300 | Ω | IOUT = 3mA, V+ = 2V, LV = GND, -40°C < TA < +85°C | 3 |
| Oscillator Frequency | fOSC | 5 | 10 |  | kHz | COSC = 0, Pin 1 Open or GND | 3 |
| Oscillator Frequency | fOSC |  | 35 |  | kHz | COSC = 0, Pin 1 = V+ | 3 |
| Power Efficiency | PEFF | 96 | 98 |  | % | RL = 5kΩ | 3 |
| Power Efficiency | PEFF | 95 | 97 |  |  | TMIN < TA < TMAX, RL = 5kΩ | 3 |
| Voltage Conversion Efficiency | VOUTEFF | 99 | 99.9 |  | % | RL = ∞ | 3 |
| Oscillator Impedance | ZOSC |  | 1 |  | MΩ | V+ = 2V | 4 |
| Oscillator Impedance | ZOSC |  | 100 |  | kΩ | V+ = 5V | 4 |
| Supply Voltage | V+ |  |  | 13 | V |  | 3 |
| LV and OSC Input Voltage |  | -0.3 |  |  | V | V+ < 5.5V, up to V+ + 0.3V | 3 |
| Current into LV |  |  |  | 20 | µA | V+ > 3.5V | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Operating Temperature Range |  | -40 |  | 85 | °C | ICL7660SI | 3 |
| Thermal Resistance Junction-Ambient | θJA |  | 160 |  | °C/W | 8 Ld Plastic SOIC, typical | 3 |
| Thermal Resistance Junction-Case | θJC |  | 48 |  | °C/W | 8 Ld Plastic SOIC, typical | 3 |

## CAD (KiCad official)

- Symbol: `ICL7660SIBA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `icl7660siba-etched.step` / `icl7660siba-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `icl7660siba.step` / `icl7660siba.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HARRIS datasheet](docs/icl7660siba-datasheet.pdf) (13 pp, sha256 `2d253a45cc17bf86`, retrieved 2026-10-31, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/icl7660siba-datasheet.pdf)