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UC2879DWTRG4 Fiches technique(PDF) 4 Page - Texas Instruments |
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UC2879DWTRG4 Fiches technique(HTML) 4 Page - Texas Instruments |
4 / 15 page www.ti.com ELECTRICAL CHARACTERISTICS UC1879 UC2879 UC3879 SLUS230B – JUNE 1998 – REVISED JUNE 2007 Unless specified; VC = VIN = V UVSEL = 12 V, CT = 470 pF, RT = 9.53k, RDELSETA-B = RDELSEC-D = 4.8k, CDELSETA-B = CDELSETC-D = 0.01 µF, T A = TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Undervoltage Lockout VUVSEL = VIN 9 10.75 12.5 Start threshold VUVSEL = Open 12.5 15.25 16.5 V VUVSEL = VIN 1.15 1.75 2.15 UVLO hysteresis VUVSEL = Open 5.2 6 7.4 Input bias, UVSEL pin VUVSEL= VIN = 8 V 30 µA Supply Current VIN = VUVSEL = 8 V, VC = 18 V, IVIN startup 150 600 IDELSETA-B = IDELSETC-D = 0 µA VIN = VUVSEL = 8 V, VC = 18 V, IVC startup 10 100 IDELSETA-B = IDELSETC-D = 0 UC3879, UC2879 23 35 IVIN operating UC1879 23 36 mA IVC operating 4 8 Voltage Reference Output voltage TJ = 25°C 4.92 5 5.08 V Line regulation 11 V < VIN < 18 V 1 10 mV Load regulation IVREF = –10 mA 5 20 Total variation Line, Load, Temperature 4.875 5.125 V Short circuit current VREF = 0 V, TJ = 25°C –60 –15 mA Error Amplifier Error amplifier input voltage 2.4 2.5 2.6 V Input bias current 0.6 3 µA AVOL 1 V < VCOMP < 4 V 60 90 dB PSRR 11 V < VIN < 18 V 85 100 Output sink current VCOMP = 1 V 1 2.5 mA Output source current VCOMP = 4 V –1.3 –0.5 Output voltage high ICOMP = –0.5 mA 4 4.7 5 V Output voltage low ICOMP = 1 mA 0 0.5 1 Slew rate TA = 25°C 6 11 V/ µs 4 Submit Documentation Feedback |
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