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Name	Last commit message	Last updated
docs	tj7660d: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	1mo ago
viewers	tj7660d: viewers · Ray	1mo ago
package.json	Publish 0.1.0 · Ray	1mo ago
page.json	tj7660d: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray	1mo ago
README.md	tj7660d: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray	1mo ago
tj7660d-etched.fit.json	tj7660d: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	1mo ago
tj7660d-etched.glb	tj7660d: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	1mo ago
tj7660d-etched.step	tj7660d: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	1mo ago
tj7660d.glb	Publish 0.1.0 · Ray	1mo ago
tj7660d.kicad_mod	Publish 0.1.0 · Ray	1mo ago
tj7660d.kicad_sym	Publish 0.1.0 · Ray	1mo ago
tj7660d.lbr	Publish 0.1.0 · Ray	1mo ago
tj7660d.step	Publish 0.1.0 · Ray	1mo ago

TJ7660D

HTC Korea TAEJIN Tech · Charge Pumps · SOIC-8

TJ7660D from HTC Korea TAEJIN Tech, in a SOIC-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	NC	unconnected	No internal connection. Leave floating or tie to a nearby copper pour for mechanical support only.
2	CAP+	passive	Positive terminal of the external charge-pump 'flying' capacitor C1 (typ. 10 uF). Alternately switched between V+ and CAP- during the pump cycle to transfer charge to the reservoir capacitor.
3	GND	power_in	Device ground / 0 V reference for the input supply and the output reservoir capacitor return.
4	CAP-	passive	Negative terminal of the external charge-pump 'flying' capacitor C1. Alternately switched between GND (charge phase) and VOUT (transfer phase) by the internal N-channel MOS switches.
5	VOUT	power_out	Inverted supply output; delivers -V+ (approximately -1.5 V to -10 V) into the external reservoir capacitor C2 (typ. 10 uF to GND). Typical output source resistance is 60 Ohm (100 Ohm max) at IOUT = 20 mA, V+ = 5 V.
6	LV	input	Low-voltage operation mode select. Tie to GND to bypass the internal series regulator and improve operation for V+ in the 1.5 V - 3.5 V range. Must be left floating (open) for V+ >= 3.5 V (up to 10 V) to prevent device latchup. Absolute-max input current 20 uA for V+ > 3.5 V.
7	OSC	bidirectional	Internal RC-oscillator node. Nominal free-running frequency is ~10 kHz at V+ = 5 V with COSC = 0. Add an external capacitor to GND to lower the frequency, or drive with an external clock to override the internal oscillator.
8	V+	power_in	Positive supply input, +1.5 V to +10 V (absolute-max +10.5 V). Also serves as the reference used by the level translator and internal voltage regulator. Typical supply current 100 uA (180 uA max) with no load.

Key specifications

Parameter	Value
Manufacturer	HTC Korea TAEJIN Tech
Package	SOIC-8
Category	Power Management (PMIC)
Pins	8

Ordering variants

Same part, different packaging or reel option.

TJ7660DD
TJ7660DN

CAD (KiCad official)

Symbol: TJ7660D
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)
3D model files: tj7660d-etched.step / tj7660d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tj7660d.step / tj7660d.glb are the bare package body.

Provenance

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

Datasheet: HTC Korea TAEJIN Tech datasheet (11 pp, sha256 86054706302dec33, 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