# TP7660H

**TOPPOWER Nanjing Extension Microelectronics** · DC-DC Converters · SOIC-8-150mil

TP7660H from TOPPOWER Nanjing Extension Microelectronics, in a SOIC-8-150mil. 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. Datasheet recommends grounding this pin in the application circuit. |
| 2 | CAP+ | passive | Positive terminal of the external flying (pump) capacitor. Connect a 10 uF capacitor between CAP+ (pin 2) and CAP- (pin 4). |
| 3 | GND | power_in | Ground reference for the device and for the input/output capacitors. |
| 4 | CAP- | passive | Negative terminal of the external flying (pump) capacitor. Connect a 10 uF capacitor between CAP+ (pin 2) and CAP- (pin 4). |
| 5 | VOUT | power_out | Inverted charge-pump output. Delivers a negative voltage of approximately -VDD (range -2.5 V to -11 V). Bypass to GND with a 10 uF storage capacitor. Typical output resistance 50 Ω at VIN=5 V, IOUT=10 mA. |
| 6 | NC | unconnected | No connection. Datasheet recommends grounding this pin in the application circuit. |
| 7 | OSC | bidirectional | Oscillator node. Left open the internal oscillator runs at ~10 kHz. May be pulled by an external CMOS clock (through a 1 kΩ series resistor) to raise frequency (charge-pump runs at half the clock), or loaded with an external capacitor between OSC (pin 7) and VDD (pin 8) to lower the oscillator frequency and reduce switching loss. |
| 8 | VDD | power_in | Positive supply input. Operating range 2.5 V to 11 V (absolute maximum 11.5 V). Bypass to GND with a 10 uF capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOPPOWER Nanjing Extension Microelectronics |
| Package | SOIC-8-150mil |
| Category | PMIC |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TP7660H`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8-150mil (KiCad packages3D, STEP)
- 3D model files: `tp7660h-etched.step` / `tp7660h-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tp7660h.step` / `tp7660h.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TOPPOWER Nanjing Extension Microelectronics datasheet](docs/tp7660h-datasheet.pdf) (7 pp, sha256 `c4c325621b63dab9`, 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/tp7660h-datasheet.pdf)