TNY276PN from POWER INTEGRATIONS, in a DIP-8C. 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	EN/UV	input	Enable / Line Under-Voltage sense input. Dual-function pin: a low-impedance source-follower (~1.2 V) whose current is compared to a ~115 uA threshold to enable/disable MOSFET switching (typically driven by an optocoupler), and a line under-voltage sense input that measures current (~25 uA start / ~1 uA disable) from an external resistor to the DC bulk to inhibit switching under low-line conditions.
2	BP/M	power_in	Bypass / Multi-Function pin. Connection for the external bypass capacitor of the internally generated 5.85 V supply; capacitor value (0.1 uF / 1 uF / 10 uF) also selects the current-limit mode. A 6.4 V shunt clamp allows external biasing via a bias winding, and shutdown latches when the current into this pin exceeds 5.5 mA (releases when BP/M drops below 4.9 V).
4	D	power_in	DRAIN pin - connection to the drain of the internal 700 V power MOSFET. Also provides the internal operating current for start-up and steady-state operation via the high-voltage switched current source.
5	S	power_in	SOURCE pin - internally connected to the power MOSFET source. Serves as the high-voltage power return and control-circuit common. Multiple source pins (5-8) are tied internally and used to improve heatsinking to the PCB while providing extended creepage from the DRAIN pin.
6	S	power_in	SOURCE pin - internally connected to the power MOSFET source. Serves as the high-voltage power return and control-circuit common. Multiple source pins (5-8) are tied internally and used to improve heatsinking to the PCB.
7	S	power_in	SOURCE pin - internally connected to the power MOSFET source. Serves as the high-voltage power return and control-circuit common. Multiple source pins (5-8) are tied internally and used to improve heatsinking to the PCB.
8	S	power_in	SOURCE pin - internally connected to the power MOSFET source. Serves as the high-voltage power return and control-circuit common. Multiple source pins (5-8) are tied internally and used to improve heatsinking to the PCB.

Key specifications

Parameter	Value
Manufacturer	POWER INTEGRATIONS
Package	DIP-8C
Category	PMIC
Pins	7

Ordering variants

Same part, different packaging or reel option.

TNY276PNP
TNY276PN
TNY276PNG
TNY276PNGN

CAD (KiCad official)

Symbol: TNY276PN
Footprint: Package_DIP:DIP-8_W7.62mm
3D model: DIP-8C (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tny276pn.step`	271 KB	You want the bare part, or you mark your own boards.
`tny276pn-etched.step`	1.4 MB	You want the part with `TNY276PN` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 367 faces against 148 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: POWER INTEGRATIONS datasheet (24 pp, sha256 4ea89b7bcdbb671d, 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