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LC5222D Fiches technique(PDF) 2 Page - Sanken electric |
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LC5222D Fiches technique(HTML) 2 Page - Sanken electric |
2 / 11 page Selection Guide Part Number Package Maximum Input Voltage VBB(max) (V) Output MOSFET RDS(ON)(max) (Ω) LC5222D DIP8 250 2.2 LC5225D 450 6 LC5222S SOP8 250 2.2 LC5225S 450 6 Absolute Maximum Ratings Unless specifically noted, TA is 25°C Characteristic Symbol Notes Pins1 Rating Unit Main Power Supply Voltage VBB LC5222D/S 6 – 8 (7 – 8) 250 V LC5225D/S 450 V Output Breakdown Voltage VO(BR) LC5222D/S 5 – 4 (5, 6 – 4) 250 V LC5225D/S 450 V Output Current2 IO Pulse width ≥ 1 μs 5 – 4 (5, 6 – 4) 0.5 A PWM Pin Voltage3 VPWM 2 – 8 −0.3 to VZ V REF Pin Input Voltage3 VREF 3 – 8 −0.3 to VZ V SEN Pin Voltage VSEN Pulse width ≥ 1 μs 4 – 8 −0.3 to 4.0 V Allowable Power Dissipation4,5 PD LC5222S LC5225S On Sanken evaluation PCB ― 0.85 W LC5222D LC5225D 1.73 W Operating Ambient Temperature TA ―−40 to 105 °C Storage Temperature Tstg ―−40 to 150 °C Junction Temperature TJ ― 150 °C 1 Where the pin numbers differ between the DIP8 and the SOP8 packages, the SOP8 pin number is written in parentheses. 2 The output current value may be restricted based on duty cycle, ambient air temperature, or heat dissipation conditions. In any case, please be sure to keep from exceeding the junction temperature, TJ. 3 Zener diodes are built-in between the PWM pin and GND, and between the REF pin and GND. VZ is the breakdown voltage of these internal Zener diodes, and VZ = 6.3 V (typ). In addition, the maximum sink current is 1 mA. 4 Allowable loss, PD , is dependent on the circuit layout of the PCB to be used. 5 Please refer to the Ambient Temperature versus Power Dissipation Curve. The polarity value for current specifies a sink as "+," and a source as “−,” referencing the IC. Ambient Temperature, TA (°C) 2.0 1.5 1.0 0.5 0 0 25 50 100 75 150 125 Ambient Temperature versus Power Dissipation On Sanken evaluation PCB R θJ-A = 72 °C/W R θJ-A = 147 °C/W PD = 1.73 W PD = 0.85 W SOP DIP LC5222D/25D and LC5222S/25S 2 SANKEN ELECTRIC CO., LTD. LC5222D/25D_22S/25S-DS Off-Line DC/DC LED Driver ICs August 8, 2012 |
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