LNK353 POWERINT [Power Integrations, Inc.], LNK353 Datasheet
LNK353
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LNK353 Summary of contents
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... ON/OFF control scheme, a high voltage switched current ® Figure 1. Typical Standby Application. PRODUCT LNK353 LNK354 Table 1. Notes: 1. Typical continuous power in a non-ventilated enclosed adapter measured at 50 °C ambient. 2. Maximum practical continuous power in an open frame design with adequate heat sinking, measured at 50 ° ...
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... LNK353/354 BYPASS (BP) 6.3 V JITTER OSCILLATOR FEEDBACK 1. (FB) Figure 2. Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: Power MOSFET drain connection. Provides internal operating current for both start-up and steady-state operation. BYPASS (BP) Pin: Connection point for a 0.1 µF external bypass capacitor for the internally generated 5 ...
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... FB pin is not pulled high for 30 ms, the power MOSFET switching is disabled for 650 ms. The auto-restart alternately enables and disables the switching of the power MOSFET until the fault condition is removed. 600 500 V DRAIN 400 300 200 100 0 208 kHz 192 kHz 0 Time (µs) Figure 4. Frequency Jitter. LNK353/354 ), the LIMIT 6 2/05 ...
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... LNK353/354 D1 D2 1N4005 1N4005 RF1 8.2 Ω 2 4.7 µF 85-265 VAC 400 1N4005 1N4005 Figure 5. Universal Input, 5.7 V, 400 mA, Constant Voltage, Constant Current Battery Charger Using LinkSwitch-HF. Applications Example A 2.4 W CC/CV Charger Adapter The circuit shown in Figure typical implementation of a 5.7 V, 400 mA, constant voltage, constant current (CV/CC) battery charger. The input bridge formed by diodes D1-D4, rectifi ...
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... Output Diode For best performance, the area of the loop connecting the secondary winding, the output diode and the output filter capacitor should be minimized. In addition, sufficient copper area should be provided at the anode and cathode terminals LNK353/354 ) 2/05 ...
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... LNK353/354 of the diode for heatsinking. A larger area is preferred at the quiet cathode terminal. A large anode area can increase high frequency radiated EMI. Quick Design Checklist As with any power supply design, all LinkSwitch-HF designs should be verified on the bench to make sure that component specifi ...
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... Not Switching) See Note A FEEDBACK Open (MOSFET Switching) See Notes ° See Note ° See Note C LNK353/354 (1, ° oz. (610 g/m ) copper clad oz. (610 g/m ) copper clad Min Typ Max Units 186 ...
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... di/dt = 115 mA/µ ° LNK354 di/dt = 500 mA/µ ° LNK353 LNK354 = 25 ° See Note F See Note ° LNK353 100 ° ° LNK354 100 ° 6 ≥2 V, ...
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... J See Figure 7 (Unless Otherwise Specified) See Figure °C J See Note H and I when FEEDBACK pin voltage is ≥2 V (MOSFET not S1 DSS when FEEDBACK pin is shorted to SOURCE (MOSFET switching). DSS LNK353/354 Min Typ Max Units µs 0.5 µ ...
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... LNK353/354 Figure 7. LinkSwitch-HF General Test Circuit 90% DRAIN VOLTAGE 10 Figure 8. LinkSwitch-HF Duty Cycle Measurement 2/05 470 Ω MAX (internal signal) 90 DRAIN OSC PI-2048-033001 Figure 9. LinkSwitch-HF Output Enable Timing. ...
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... Junction Temperature (°C) 1.4 1.2 1.0 0.8 Normalized TBD Normalized Current 0.6 di/ Limit = 1 LNK353 90 mA/µs 185 mA 115 mA/µs 250 mA 0.4 LNK354 LNK353 0.2 LNK354 Normalized di/dt 25 °C 100 °C Scaling Factors: LNK353 0.7 LNK354 1 DRAIN Voltage ( 2/05 ...
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... LNK353/354 Typical Performance Characteristics (cont.) PART ORDERING INFORMATION LNK 354 2/05 1000 100 100 200 300 400 500 Drain Voltage (V) Figure 16. C vs. Drain Voltage. OSS LinkSwitch Product Family HF Series Number Package Identifier G Plastic Surface Mount DIP P Plastic DIP ...
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... Solder Pad Dimensions .057 (1.45) .068 (1.73) (NOTE 5) .004 (.10) .009 (.23) .004 (.10) .036 (0.91) .012 (.30) .044 (1.12) LNK353/354 (NOTE 7) PI-2551-121504 Notes: 1. Controlling dimensions are inches. Millimeter sizes are shown in parentheses. 2. Dimensions shown do not include mold flash or other protrusions. Mold flash or protrusions shall not exceed .006 (.15) on any side. ...
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... LNK353/354 14 F 2/05 Notes ...
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... Notes LNK353/354 15 F 2/05 ...
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... LNK353/354 Revision Notes D 1) Released Final Data Sheet Added lead-free ordering information Minor error corrections. For the latest updates, visit our website: www.powerint.com Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein ...