Power Integrations TNY289PG
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.31 | $1.31 |
| 15+ | $1.27 | $19.05 |
| 25+ | $1.24 | $31.00 |
| 50+ | $1.17 | $58.50 |
| 100+ | $1.04 | $104.00 |
| N+ | $0.21 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Power Integrations |
| Product Series | TinySwitch®-4 |
| Packaging | Tube | |
| Output Isolation | Isolated |
| Internal Switch(s) | Yes |
| Voltage - Breakdown | 725V |
| Topology | Flyback |
| Voltage - Start Up | - |
| Voltage - Supply (Vcc/Vdd) | - |
| Duty Cycle | 67% |
| Frequency - Switching | 124kHz ~ 140kHz |
| Power (Watts) | 18 W |
| Fault Protection | Current Limiting, Open Loop, Over Temperature, Over Voltage, Short Circuit |
| Control Features | EN |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm), 7 Leads |
| Supplier Device Package | 8-PDIP-C |
| ROHS |
The TNY289PG from Power Integrations is an isolated flyback offline switcher in the TinySwitch®-4 family. It integrates the power switch, delivers up to 18 W, and operates at 124kHz to 140kHz with a 725V breakdown rating and 67% maximum duty cycle. Current limiting, open loop, over temperature, over voltage, and short circuit protection support dependable isolated power designs.
- Integrated switch simplifies isolated flyback designs and reduces BOM.
- 725V breakdown voltage enables robust offline operation.
- Broad 124kHz–140kHz switching frequency range with 67% max duty cycle.
- Comprehensive protection: current limiting, open loop, OTP, OVP, and short circuit.
- Wide -40°C to 150°C junction temperature range for demanding applications.
Low-Power AC-DC Adapters
The 18 W rating and 124kHz–140kHz switching frequency suit compact isolated flyback adapters for consumer electronics.
Standby and Auxiliary Power
With an EN control feature and comprehensive fault protection, the TNY289PG supports reliable auxiliary and standby supplies.
Home Appliances
An operating junction temperature range of -40°C to 150°C allows use in appliance control and bias supplies.
Industrial Controls
Short circuit, open loop, and over temperature protection make this flyback switcher suitable for rugged isolated control power.
- Q: What topology does the TNY289PG use?
- A: It is an isolated flyback offline switcher from the TinySwitch®-4 series.
- Q: What is the breakdown voltage?
- A: The device has a 725V breakdown voltage rating.
- Q: Does it have an integrated switch?
- A: Yes, the power switch is integrated on-chip.
- Q: What power and frequency does it support?
- A: It delivers up to 18 W with switching frequency from 124kHz to 140kHz and 67% maximum duty cycle.
- Q: What protections are included?
- A: Current limiting, open loop, over temperature, over voltage, and short circuit protection.
- Q: What topology does the TNY289PG use?
- A: It is an isolated flyback offline switcher from the TinySwitch®-4 series.
- Q: What is the breakdown voltage?
- A: The device has a 725V breakdown voltage rating.
- Q: Does it have an integrated switch?
- A: Yes, the power switch is integrated on-chip.
- Q: What power and frequency does it support?
- A: It delivers up to 18 W with switching frequency from 124kHz to 140kHz and 67% maximum duty cycle.
- Q: What protections are included?
- A: Current limiting, open loop, over temperature, over voltage, and short circuit protection.

TNY289PG.pdf