LinkSwitch-LP

Lowest Component Count Switcher for Linear Transformer Charger Replacement

Data Sheets

ECAD Models


LinkSwitch-LP ECAD Models

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Product Details

LinkSwitch™-LP switcher ICs cost effectively replace all unregulated isolated linear transformer based (50/60 Hz) power supplies up to 3 W output power. For worldwide operation, a single universal input design replaces multiple linear transformer based designs. The self-biased circuit achieves an extremely low no-load consumption of under 150 mW. The internal oscillator frequency is jittered to significantly reduce both quasi- peak and average EMI, minimizing filter cost.

Lowest System Cost and Advanced Safety Features Provide Superior Performance over Linear and RCC

  • Lowest component count switcher
  • Very tight parameter tolerances using proprietary IC trimming technology and transformer construction techniques enable Clampless™ designs – decreases component count/system cost and increases efficiency
  • Hysteretic thermal shutdown protection – eliminates the thermal fuse used with linear transformers or additional components in RCC designs
  • Frequency jittering greatly reduces EMI – enables low cost input filter configuration
  • Proprietary E-Shield™ transformer eliminates Y capacitor
  • Universal input range allows worldwide operation
  • Auto-restart reduces delivered power by >85% during short circuit and open loop fault conditions
  • Simple ON/OFF control, no loop compensation needed
  • High bandwidth provides fast turn on with no overshoot and excellent transient load response

Applications

Power Table

Output Power (Watts)1
PRODUCT2230 VAC ±15%85-265 VAC
Adapter3Open
Frame4
Adapter3Open
Frame4
LNK562D
LNK562P
LNK562G
1.91.91.91.9
LNK563D
LNK563P
LNK563G
2.52.52.52.5

LNK564D
LNK564P
LNK564G

3333

Notes:

  1. Output power may be limited by specific application parameters including core size and Clampless operation (see the Key Application Considerations section of the LinkSwitch-LP Family Data Sheet for details).
  2. Packages: D: SO-8C, P: DIP-8B, G: SMD-8B. See the Part Ordering Information section of the LinkSwitch-LP Family Data Sheet for details.
  3. Minimum continuous power in a typical non-ventilated enclosed adapter measured at 50 °C ambient.
  4. Minimum practical continuous power in an open frame design with adequate heat sinking, measured at 50 °C ambient.

Product Documents

Design Examples

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