Power Integrations TOP253EG
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.86 | $0.86 |
| 15+ | $0.84 | $12.60 |
| 25+ | $0.82 | $20.50 |
| 50+ | $0.77 | $38.50 |
| 100+ | $0.68 | $68.00 |
| N+ | $0.14 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | Power Integrations |
| Product Series | TOPSwitch®-HX |
| Packaging | Tube | |
| Output Isolation | Isolated |
| Internal Switch(s) | Yes |
| Voltage - Breakdown | 700V |
| Topology | Flyback |
| Voltage - Start Up | - |
| Voltage - Supply (Vcc/Vdd) | - |
| Duty Cycle | 78% |
| Frequency - Switching | 66kHz, 132kHz |
| Power (Watts) | 43 W |
| Fault Protection | Current Limiting, Over Temperature, Over Voltage |
| Control Features | - |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 7-SSIP, 6 Leads, Exposed Pad, Formed Leads |
| Supplier Device Package | eSIP-7C |
| ROHS |
The TOP253EG from Power Integrations is an isolated flyback offline switcher with an integrated 700V switch, part of the TOPSwitch®-HX series. It delivers 43 W with selectable 66kHz and 132kHz switching frequencies and 78% maximum duty cycle. Protections include current limiting, over temperature, and over voltage. Housed in a 7-SSIP package with exposed pad and rated -40°C to 150°C junction.
- Integrated 700V switch simplifies isolated flyback designs.
- Selectable 66kHz/132kHz frequencies for design flexibility.
- 43 W output with 78% max duty cycle for compact adapters.
- Current limiting, over temperature, and over voltage protection.
- Wide -40°C to 150°C junction range for demanding environments.
Isolated Flyback Power Supplies
The TOP253EG is an isolated flyback offline switcher with an integrated 700V switch, providing galvanic isolation for AC-DC conversion up to 43 W.
Dual-Frequency Design Flexibility
Selectable 66kHz and 132kHz switching frequencies let designers balance transformer size against switching losses for their target power level.
Compact Power Adapters
43 W output with 78% max duty cycle supports compact isolated adapters for consumer and industrial equipment.
Appliance and Industrial Electronics
Current limiting, over temperature, and over voltage protection support dependable operation in appliance and industrial power supplies.
Demanding Thermal Environments
A -40°C to 150°C junction temperature range supports use in thermally demanding applications.
- Q: What topology does the TOP253EG use?
- A: It is a Flyback offline switcher in an isolated configuration.
- Q: Is the switch integrated?
- A: Yes, an internal switch with a 700V breakdown rating is integrated.
- Q: What switching frequency does it offer?
- A: 66kHz and 132kHz selectable frequencies.
- Q: What is the power rating and max duty cycle?
- A: 43 W output with 78% maximum duty cycle.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection.
- Q: What package and temperature range?
- A: 7-SSIP package rated -40°C to 150°C junction.
- Q: What topology does the TOP253EG use?
- A: It is a Flyback offline switcher in an isolated configuration.
- Q: Is the switch integrated?
- A: Yes, an internal switch with a 700V breakdown rating is integrated.
- Q: What switching frequency does it offer?
- A: 66kHz and 132kHz selectable frequencies.
- Q: What is the power rating and max duty cycle?
- A: 43 W output with 78% maximum duty cycle.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection.
- Q: What package and temperature range?
- A: 7-SSIP package rated -40°C to 150°C junction.

TOP253EG.pdf