lnk354 Power Integrations, Inc., lnk354 Datasheet
lnk354
Available stocks
Related parts for lnk354
lnk354 Summary of contents
Page 1
... 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 °C ambient. 3. Packages: P: DIP-8B, G: SMD-8B ...
Page 2
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) ...
Page 3
LinkSwitch-HF Functional Description LinkSwitch-HF combines a high voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM (pulse width modulator) controllers, LinkSwitch-HF uses a simple ON/OFF control to regulate the output voltage. The LinkSwitch-HF controller ...
Page 4
... C2 4.7 µF 400 V R4 5.1 kΩ LinkSwitch-HF U1 LNK354P C4 100 nF Output rectification is provided by Schottky diode D6. The low forward voltage provides high efficiency across the operating range and the low ESR capacitor C6 minimizes output voltage ripple. In constant voltage (CV) mode, the output voltage is set by the Zener diode VR1 and the emitter-base voltage of PNP transistor Q1 ...
Page 5
Key Application Considerations LinkSwitch-HF Design Considerations Output Power Table Data sheet maximum output power table (Table 1) represents the maximum practical continuous output power level that can be obtained under the following assumed conditions: 1. The minimum DC input voltage ...
Page 6
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 ...
Page 7
DRAIN Voltage .................................. ................ -0 700 V Peak DRAIN Current......................................400 mA (750 mA) FEEDBACK Voltage ................................................ -0 FEEDBACK Current .................................................... 100 mA BYPASS Voltage...................................................... -0 Storage Temperature .......................................... -65 °C ...
Page 8
... LNK353 LNK354 = 25 ° See Note F See Note ° LNK353 100 ° ° LNK354 100 ° 6 ≥ 560 125 ° 6 ≥2 V, ...
Page 9
Parameter Symbol OUTPUT (cont) DRAIN Supply Voltage Output Enable t Delay EN Output Disable t Setup Time DST Auto-Restart t ON-Time AR Auto-Restart Duty DC Cycle AR NOTES: A. Total current consumption is the sum of I switching) and the ...
Page 10
LNK353/354 Figure 7. LinkSwitch-HF General Test Circuit 90% DRAIN VOLTAGE 10 Figure 8. LinkSwitch-HF Duty Cycle Measurement 2/05 470 Ω ...
Page 11
... 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 ...
Page 12
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 ...
Page 13
D S .004 (.10) -E- .240 (6.10) .260 (6.60) Pin 1 .367 (9.32) -D- .387 (9.83) .125 (3.18) .145 (3.68) -T- SEATING PLANE .100 (2.54) BSC .048 (1.22) .053 (1.35) .014 (.36) ⊕ .010 (.25) ...
Page 14
LNK353/354 14 F 2/05 Notes ...
Page 15
Notes LNK353/354 15 F 2/05 ...
Page 16
... The PI logo, TOPSwitch, TinySwitch, LinkSwitch, DPA-Switch, EcoSmart, PI Expert and PI FACTS are trademarks of Power Integrations, Inc. Other trademarks are property of their respective companies. ©Copyright 2005, Power Integrations, Inc. Power Integrations Worldwide Sales Support Locations ...