전자부품 데이터시트 검색엔진 |
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UC3842T 데이터시트(PDF) 4 Page - STMicroelectronics |
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UC3842T 데이터시트(HTML) 4 Page - STMicroelectronics |
4 / 15 page Notes : 1. Max package power dissipation limits must be respected; low duty cycle pulse techniques are used during test maintain Tj as close to Tamb as possible. 2. These parameters, although guaranteed, are not 100% tested in production. 3. Parameter measured at trip point of latch with VPIN2 = 0. 4. Gain defined as : ∆ VPIN1 A = ; 0 ≤ VPIN3 ≤ 0.8 V ∆ VPIN3 5. Adjust Vi above the start threshold before setting at 15 V. ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Test Conditions Value Unit Min. Typ. Max. OUTPUT SECTION VOL Output Low Level ISINK = 20mA 0.1 0.4 V ISINK = 200mA 1.6 2.2 V VOH Output High Level ISOURCE = 20mA 13 13.5 V ISOURCE = 200mA 12 13.5 V VOLS UVLO Saturation VCC = 6V; ISINK = 1mA 0.1 1.1 V tr Rise Time Tj = 25 °C CL = 1nF (2) 50 150 ns tf Fall Time Tj = 25 °C CL = 1nF (2) 50 150 ns UNDER-VOLTAGE LOCKOUT SECTION Start Threshold UC3842T/4T 15 16 17 V UC3843T/5T 7.8 8.4 9.0 V Min Operating Voltage After Turn-on UC3842T/4T 9 10 11 V UC3843T/5T 7.0 7.6 8.2 V PWM SECTION Maximum Duty Cycle UC3842T/3T 94 96 100 % UC3844T/5T 47 48 50 % Minimum Duty Cycle 0% TOTAL STANDBY CURRENT Ist Start-up Current Vi = 6.5V for UC3843T/45T 0.3 0.5 mA Vi = 14V for UC3842T/44T 0.3 0.5 mA Ii Operating Supply Current VPIN2 = VPIN3 = 0V 12 17 mA Viz Zener Voltage Ii = 25mA 30 36 V UC3842T - UC3843T - UC3844T - UC3845T 4/15 |
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