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TNY288DG-TL

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by Ray

POWER INTEGRATIONS AC-DC Controllers and Regulators, SO-7. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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TNY288DG-TL

POWER INTEGRATIONS · AC-DC Controllers and Regulators · SO-7

TNY288DG-TL from POWER INTEGRATIONS, in a SO-7. 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 / UNDER-VOLTAGE input. Dual-function pin: (a) enable input for ON/OFF control - threshold current 75-115 uA modulates group pulsing (source-follower output ~1.2 V, current-limited to 115 uA); (b) line under-voltage sense through an external resistor to the DC bus (must source >25 uA to enable switching). If left open, line-UV function is disabled.
2 BP/M power_in BYPASS / MULTI-FUNCTION pin. Connection for the bypass capacitor charged by the internal 5.85 V regulator; capacitor value also selects the current-limit mode: 0.1 uF = standard, 1 uF = reduced (next smaller device), 10 uF = increased (next larger device). Also provides latched shutdown/OVP when current into the pin exceeds ISD (typ 6.5 mA), clamped by an internal 6.4 V shunt.
4 D power_in DRAIN of the internal 725 V power MOSFET. Connects to the transformer primary; also provides internal start-up current for the controller during power-up and steady-state operation. Pin 3 is intentionally omitted in the SO-8C package for high-voltage creepage between DRAIN and the low-voltage pins.
5 S power_in SOURCE. Internally connected to the output MOSFET source; serves as the high-voltage power return and the controller-circuit common (ground). Pins 5-8 are all tied to the internal SOURCE and are used to spread heat into the PCB.
6 S power_in SOURCE. Internally tied to the MOSFET SOURCE (device common); paralleled with pins 5, 7, 8 for heat sinking to the PCB.
7 S power_in SOURCE. Internally tied to the MOSFET SOURCE (device common); paralleled with pins 5, 6, 8 for heat sinking to the PCB.
8 S power_in SOURCE. Internally tied to the MOSFET SOURCE (device common); paralleled with pins 5, 6, 7 for heat sinking to the PCB.

Key specifications

Parameter Value
Manufacturer POWER INTEGRATIONS
Package SO-7
Category PMIC
Pins 7

Ordering variants

Same part, different packaging or reel option.

  • TNY288DG-TL
  • TNY288DG-TLPG
  • TNY288DG-TLKG

CAD (KiCad official)

  • Symbol: TNY288DG-TL
  • Footprint: Package_SO:TI_SO-PowerPAD-8
  • 3D model: SO-7 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: POWER INTEGRATIONS datasheet (26 pp, sha256 9117cb81a319b0d4, 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