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UC3842A 데이터시트(PDF) 2 Page - ON Semiconductor |
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UC3842A 데이터시트(HTML) 2 Page - ON Semiconductor |
2 / 18 page UC3842A, UC3843A, UC2842A, UC2843A http://onsemi.com 2 Figure 1. Simplified Block Diagram 5.0V Reference Latching PWM VCC Undervoltage Lockout Oscillator Error Amplifier 7(12) VC 7(11) Output 6(10) Power Ground 5(8) 3(5) Current Sense Input Vref 8(14) 4(7) 2(3) 1(1) GND 5(9) RTCT Voltage Feedback Input R R + − Vref Undervoltage Lockout Output Compensation Pin numbers in parenthesis are for the D suffix SOIC−14 package. VCC MAXIMUM RATINGS Rating Symbol Value Unit Bias and Driver Voltages (Zero Series Impedance, see also Total Device spec) VCC, VC 30 V Total Power Supply and Zener Current (ICC + IZ) 30 mA Output Current, Source or Sink (Note 1) IO 1.0 A Output Energy (Capacitive Load per Cycle) W 5.0 mJ Current Sense and Voltage Feedback Inputs Vin − 0.3 to + 5.5 V Error Amp Output Sink Current IO 10 mA Power Dissipation and Thermal Characteristics D Suffix, Plastic Package Maximum Power Dissipation @ TA = 25°C Thermal Resistance, Junction−to−Air N Suffix, Plastic Package Maximum Power Dissipation @ TA = 25°C Thermal Resistance, Junction−to−Air PD RqJA PD RqJA 862 145 1.25 100 mW °C/W W °C/W Operating Junction Temperature TJ + 150 °C Operating Ambient Temperature UC3842A, UC3843A UC2842A, UC2843A TA 0 to + 70 − 25 to + 85 °C Storage Temperature Range Tstg − 65 to + 150 °C Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. Maximum Package power dissipation limits must be observed. |
유사한 부품 번호 - UC3842A_05 |
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유사한 설명 - UC3842A_05 |
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