Ⅰ. TNY268PN Description
Ⅱ. TNY268PN Pinout
Ⅲ. TNY268PN 3D Model
Ⅳ. TNY268PN Specifications
Ⅴ. TNY268PN Feature
Ⅵ. TNY268PN Applications
Ⅶ. Key Application Comparison Between TinySwitch and TinySwitch-II
Ⅷ. TNY268PN Packaging Information
Ⅸ. TNY268PN Layout
Ⅹ.TNY268PN Datasheet
TNY268PN is a TinySwitch-II, EcoSmart, enhanced energy-saving low-power offline switch in an 8-pin DIP package. The device integrates a 700V power MOSFET, oscillator, high-voltage switching current source, current limit and thermal shutdown circuitry into a single monolithic device. Since a bias winding and associated circuitry is not required, startup and operating power comes directly from the voltage on the DRAIN pin. In addition, TinySwitch-II devices integrate automatic restart, line undervoltage detection, and frequency jittering. The innovative design minimizes audio components in a simple ON/OFF control scheme to virtually eliminate the audible noise of standard taped/painted transformer construction. Fully integrated auto-restart circuitry safely limits output power during fault conditions such as output short circuit or open loop, reducing component count and secondary feedback circuitry cost.
1. TNY268PN Pinout
2.TNY268PN Pin Functional Description
PIN | DESCRIPTION | |
NAME | NO. | |
BP | 1 | Connection point for a 0.1 µF external bypass capacitor for the internally generated 5.8 V supply |
S | 2 | Control circuit common, internally connected to output MOSFET source |
S | 3 | |
EN/UV | 4 | This pin has dual functions: enable input and line undervoltage sense |
D | 5 | Power MOSFET drain connection |
S | 7 | Output MOSFET source connection for high voltage return |
S | 8 | |
1.TNY268PN Symbol
2.TNY268PN Footprint
3. TNY268PN 3D Model
TYPE | DESCRIPTION |
Category | |
Mfr | Power Integrations |
Series | |
Package | Tube |
Product Status | Not For New Designs |
Output Isolation | Isolated |
Internal Switch(s) | Yes |
Voltage - Breakdown | 700V |
Topology | Flyback |
Voltage - Supply (Vcc/Vdd) | - |
Duty Cycle | 65% |
Frequency - Switching | 132kHz |
Power (Watts) | 23 W |
Fault Protection | Current Limiting, Open Loop, Over Temperature, Short Circuit |
Control Features | EN |
Operating Temperature | -40°C ~ 150°C (TJ) |
Package / Case | 8-DIP (0.300", 7.62mm), 7 Leads |
Supplier Device Package | 8-PDIP-B |
Mounting Type | Through Hole |
Base Product Number |
In open frame design, output power is 23W at 230VAC, 15W at 85VAC to 265VAC
Non-vented enclosed adapter has output power of 16W at 230VAC and 10W at 85VAC to 265VAC
Maximum duty cycle 65%
Built-in circuitry virtually eliminates the audible noise of ordinary dipped transformers
132KHz operation reduces transformer size, using EF126 or EE13 cores for low cost and small size
Very tight tolerances and negligible temperature changes simplify design and reduce costs
Cost-effective alternative to bulky regulated liners
Simple design virtually eliminates rework in manufacturing Built-in current limiting and thermal protection increase safety Operating junction temperature range is -40°C to 150°C
Off-line power converters
High input voltage flyback converters
Phone chargers
Battery backup trickle chargers
Picture as below compares the features and performance differences between the TNY254 device of the TinySwitch-II family with the TinySwitch-II family of devices. Many of the new features eliminate the need for or reduce the cost of circuit components. Other features simplify the design and enhance performance.
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