You have entered a value in the highlighted fields below that contain invalid characters. Please revise your selection using valid characters only.

Product may not be an exact match for your search

You previously purchased this product. View in Order History



AC/DC Switch Mode Power Supply Controller IC, 700 VAC, 430 Hz, 5 W, SOIC-7

NXP TEA1721DT/N1,118

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
Order Code:
Technical Datasheet:
TEA1721DT/N1,118   Datasheet
See all Technical Docs

Product Overview

The TEA1721DT/N1 is a Switched Mode Power Supply (SMPS) Controller IC for low power applications (up to 5W) and operates directly from the rectified universal mains input. The device includes a high voltage power switch (700V) and has been optimized for fly-back converter topologies to provide high-efficiency over the entire load range with ultra-low power consumption in the no-load condition. It provides a circuit for start-up directly from the rectified mains voltage without any external bleeder circuits. The converter operates as a regulated voltage source from no-load up to the maximum output current and operates as current source that delivers the maximum current over a broad output voltage range. Using the TEA1721, a low power converter can be built with the minimum number of external components. The controller regulates the output voltage with primary-side sensing which eliminates the need for an additional secondary feedback circuitry and simplifies the design.
  • Primary sensing for control of output voltage without optocoupler and secondary feedback circuitry
  • Minimizes audible noise in all operation modes
  • Jitter function for reduced EMI
  • Very low supply current in no-load condition with energy saver mode
  • Incorporates high voltage start-up circuit with zero current consumption under switching operation
  • Overvoltage protection on feedback control pin with auto-restart
  • Undervoltage lock-out protection on IC supply pin
  • Over temperature protection
  • Soft-start by reduced peak current for zero and low output voltage
  • Demagnetization protection for guaranteed discontinuous conduction mode operation
  • Open and short-circuit protection of the feedback control pin
  • Short-circuit protection of the charger output
  • 700V High voltage power switch for global mains operation
  • <22mW Enables no-load power consumption


Power Management, Computers & Computer Peripherals, Consumer Electronics

Product Information

Want to see similar products? Simply select your required attributes below and hit the button ×










MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Technical Docs (3)

CAD Downloads


Terms and Conditions

CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

Accept Cancel
Packaging type Cut Tape
  Additional packaging options available
Re-reel (minimum 150/reel):2142706RL Check stock

Contact Sales for a quote

Request quote (min. 500 €)


Pricing is unavailable. Please contact customer services.

Price for:
Each (Supplied on Cut Tape)
Multiple: 1 Minimum: 1
Quantity Price Your Price
1+ €0.178
Promotional price
Contract Price
Web only price
Web only contract price

Pricing is unavailable. Please contact customer services.

No longer stocked:: No Longer Manufactured::
Add to Basket Add to Basket Pre-Order
Restricted Item
Enter Your Part No/Line Note
Total Price:
Total Price: ( )
Total Price: --
*Note: If you have selected a re-reeled item a €5.00 charge will be applied."
A re-reel is a custom reel available for cut tape items where the order qty exceeds 150
NOTE: Shipments for different packaging options may come from a remote warehouse. Please see delivery and lead time information for each packaging option.