Lowest Component Count Switcher for Linear Transformer Charger Replacement
Data Sheets
LinkSwitch-LP Data Sheet
Lowest Component Count Switcher for Linear Transformer Charger Replacement
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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 | ||||
|---|---|---|---|---|
| PRODUCT2 | 230 VAC ±15% | 85-265 VAC | ||
| Adapter3 | Open Frame4 | Adapter3 | Open Frame4 | |
| LNK562D LNK562P LNK562G | 1.9 | 1.9 | 1.9 | 1.9 |
| LNK563D LNK563P LNK563G | 2.5 | 2.5 | 2.5 | 2.5 |
LNK564D | 3 | 3 | 3 | 3 |
Notes:
- 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).
- 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.
- Minimum continuous power in a typical non-ventilated enclosed adapter measured at 50 °C ambient.
- Minimum practical continuous power in an open frame design with adequate heat sinking, measured at 50 °C ambient.
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