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UC2853D Fiches technique(PDF) 2 Page - Texas Instruments |
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UC2853D Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 10 page 2 UC1853 UC2853 UC3853 ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC) .............................40V Output Drive Current, Continuous ................................ 0.125A Peak ....................................... 0.5A Output Minimum Voltage ......................... –0.3V IAC Maximum Input Current ........................1mA IMO Maximum Output Current ..................... –2mA IMO Minimum Voltage ........................... –0.3V FB Maximum Input Voltage ..........................5V VCOMP Maximum Voltage......................... 6.2V ICOMP Sourcing Current .................... Self-Limiting ICOMP Sinking Current .......................... 20mA ICOMP Maximum Voltage ......................... 7.2V Storage Temperature ................... –65°C to +150°C Junction Temperature ................... –55°C to +150°C Lead Temperature (Soldering, 10 sec.) ............. +300°C All voltages with respect to GND. Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages. ELECTRICAL CHARACTERISTICS Unless otherwise stated, these parameters apply for TA = –55°C to +125°C for the UC1853; –25°C to +85°C for the 2853; and 0°C to +70°C for the UC3853; VCC = 16V, VFB = 3V, IAC = 100 mA, VVCOMP = 3.75V, VICOMP = 3V, TA =TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Undervoltage Lockout Section VCC Turn-on Threshold VVCOMP,VICOMP Open 11.5 13 V Hysteresis 1.5 1.8 2.1 V Supply Current Section IVCC Startup VCC = 8V, IAC = 100 µA; VVCOMP,VICOMP Open 250 500 mA IVCC IAC=0 µA, VICOMP =0V 10 15 mA Voltage Loop Error Amplifier Section Transconductance IOUT=±20 µA 0-70C 300 450 575 µmho Temperature 135 640 µmho Input Voltage 0-70C 2.925 3 3.075 V Temperature 2.9 3.1 V AVOL VVCOMP =1V–4V 50 60 dB Output Sink Current VFB = 3.2V, VVCOMP = 3.75V 20 50 µA Output Source Current VFB = 2.8V, VVCOMP = 3.75V –50 –20 µA Output Voltage High 5.5 6 V Output Voltage Low 0.6 0.9 V Current Loop Error Amplifier Section Offset Voltage 06 mV Voltage Gain VICOMP =1V–4V 70 dB Sink Current VIMO = 100mV, VICOMP =3V 1 mA Source Current VIMO = –0.1V, VICOMP = 3V –150 –80 mA Output High IICOMP = –50mA 6 6.8 V Output Low IICOMP =50 mA 0.3 0.8 V PWM Modulator Gain VICOMP = 2V – 3V (Note 1) 20 %/V CONNECTION DIAGRAM DIL-8, SOIC-8 (Top View) JorN, D Package |
Numéro de pièce similaire - UC2853D |
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Description similaire - UC2853D |
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