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TOP222YN

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POWER INTEGRATIONS AC-DC Controllers & Regulators, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TOP222YN

POWER INTEGRATIONS · AC-DC Controllers & Regulators · TO-220

TOP222YN from POWER INTEGRATIONS, in a TO-220. 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 CONTROL input Error amplifier and feedback current input for duty cycle control, internal shunt regulator connection for bias during normal operation, and connection point for the supply bypass and auto-restart/compensation capacitor (max 9 V, 100 mA).
2 SOURCE power_in Output MOSFET source connection for high voltage power return and the primary side circuit common and reference point; the tab is internally connected to this pin.
3 DRAIN passive Output MOSFET drain connection (-0.3 to 700 V) that provides internal bias current during start-up via an internal switched high-voltage current source and serves as the internal current sense point.

Key specifications

Parameter Value
Manufacturer POWER INTEGRATIONS
Package TO-220
Category Power Management ICs
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output Frequency fOSC 90 100 110 kHz IC = 4 mA, TJ = 25 °C 10
Maximum Duty Cycle DMAX 64 67 70 % IC = ICD1 + 0.4 mA 10
Minimum Duty Cycle DMIN 0.7 1.7 2.7 % IC = 10 mA 10
PWM Gain -21 -16 -11 %/mA IC = 4 mA, TJ = 25 °C 10
External Bias Current IB 0.8 2 3.3 mA 10
Dynamic Impedance ZC 10 15 22 Ω IC = 4 mA, TJ = 25 °C 10
CONTROL Pin Charging Current IC -2.4 -1.9 -1.2 mA VC = 0 V, TJ = 25 °C 10
CONTROL Pin Charging Current IC -2 -1.5 -0.8 mA VC = 5 V, TJ = 25 °C 10
Auto-restart Threshold Voltage VC(AR) 5.7 V S1 open 11
UV Lockout Threshold Voltage 4.4 4.7 5 V S1 open 11
Self-protection Current Limit TOP222Y ILIMIT 0.45 0.5 0.55 A di/dt = 80 mA/µs, TJ = 25 °C 11
Leading Edge Blanking Time tLEB 180 ns TJ = 25 °C 11
Current Limit Delay tILD 100 ns 12
Thermal Shutdown Temperature 125 135 °C 12
Power-up Reset Threshold Voltage VC(RESET) 2 3.3 4.3 V S2 open 12
ON-State Resistance RDS(ON) 15.6 18 Ω TOP222, ID = 50 mA, TJ = 25 °C 12
ON-State Resistance RDS(ON) 25.7 30 Ω TOP222, ID = 50 mA, TJ = 100 °C 12
OFF-State Current IDSS 250 µA VDS = 560 V, TA = 125 °C 12
Breakdown Voltage BVDSS 700 V ID = 100 µA, TA = 25 °C 12
Rise Time tR 100 ns Measured in a Typical Flyback Converter Application 12
Fall Time tF 50 ns Measured in a Typical Flyback Converter Application 12
DRAIN Supply Voltage 36 V See Note C 13
Shunt Regulator Voltage VC(SHUNT) 5.5 5.7 6 V IC = 4 mA 13
Shunt Regulator Temperature Drift -50 50 ppm/°C 13
CONTROL Supply/Discharge Current, MOSFET Enabled ICD1 0.6 1.2 1.6 mA TOP221-224, Output MOSFET Enabled 13
CONTROL Supply/Discharge Current, MOSFET Disabled ICD2 0.5 0.8 1.1 mA Output MOSFET Disabled 13
DRAIN Voltage -0.3 700 V Referenced to SOURCE, TA = 25 °C 10
CONTROL Voltage -0.3 9 V Referenced to SOURCE, TA = 25 °C 10
CONTROL Current 100 mA 10
Storage Temperature -65 150 °C 10
Operating Junction Temperature -40 150 °C Normally limited by internal circuitry 10
Lead Temperature 260 °C 1/16" from case for 5 seconds 10
Thermal Impedance Y Package θJA 70 °C/W Free standing with no heatsink 10
Thermal Impedance Y Package θJC 2 °C/W Measured at tab closest to plastic interface or SOURCE pin 10

CAD (KiCad official)

  • Symbol: TOP222YN
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: top222yn-etched.step / top222yn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); top222yn.step / top222yn.glb are the bare package body.

Provenance

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

  • Datasheet: POWER INTEGRATIONS datasheet (20 pp, sha256 652863444fb8124c, retrieved 2026-10-23, 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