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UC2854B Fiches technique(PDF) 2 Page - Texas Instruments |
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UC2854B Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 7 page DIL–16 & SOIC-16 (Top View) J, N & DW Packages PACKAGE PIN FUNCTION FUNCTION PIN N/C 1 Gnd 2 PKLMT 3 CA Out 4 ISENSE 5 N/C 6 Mult Out 7 IAC 8 VA Out 9 VRMS 10 N/C 11 VREF 12 ENA 13 VSENSE 14 RSET 15 N/C 16 SS 17 CT 18 VCC 19 GT Drv 20 PLCC-20 & LCC-20 (Top View) Q & L Packages CONNECTION DIAGRAMS Supply Voltage VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22V GT Drv Current, Continuous . . . . . . . . . . . . . . . . . . . . . . . 0.5A GT Drv Current, 50% Duty Cycle. . . . . . . . . . . . . . . . . . . . 1.5A Input Voltage, VSENSE, VRMS . . . . . . . . . . . . . . . . . . . . . . . 11V Input Voltage, ISENSE, Mult Out . . . . . . . . . . . . . . . . . . . . . 11V Input Voltage, PKLMT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V Input Current, RSET, IAC, PKLMT, ENA . . . . . . . . . . . . . . 10mA Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Storage Temperature . . . . . . . . . . . . . . . –65°C to +150°C Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . +300°C ABSOLUTE MAXIMUM RATINGS UC1854A/B UC2854A/B UC3854A/B Note 1: All voltages with respect to Gnd (Pin 1). Note 2: All currents are positive into the specified terminal. Note 3: ENA imput is internally clamped to approximately 10V. Note 4: Consult Unitrode Integrated Circuits databook for information regarding thermal specifications and limitations of packages. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS OVERALL Supply Current, Off CAO, VAO = 0V, VCC = UVLO - 0.3V 250 400 µA Supply Current, On 12 18 mA VCC Turn-On Threshold UC1854A 16 17.5 V UC1854B 10.5 11.2 V VCC Turn-Off Threshold UC1854A / B 9 10 V VCC Clamp I(VCC) = ICC(on) + 5mA 18 20 22 V VOLTAGE AMPLIFIER Input Voltage 2.9 3.0 3.1 V VSENSE Bias Current –500 –25 500 nA Open Loop Gain VOUT = 2 to 5V 70 100 dB VOUT High ILOAD = –500 µA6 V VOUT Low ILOAD = 500 µA 0.3 0.5 V Output Short Circuit Current VOUT = 0V 1.5 3.5 mA Gain Bandwidth Product Fin = 100kHz, 10mV p-p, (Note 1) 1 mHz Unless otherwise stated, VCC=18V, RT=8.2k, CT=1.5nF, PKLMT=1V, VRMS=1.5V, IAC=100 µA, ISENSE=0V, CA Out=3.5V, VA Out=5V, VSENSE=3V, –55oC<TA<125oC for the UC1854A/B, –40 oC<TA<85oC for the UC2854A/B, and 0oC<TA<70oC for the UC3854A/B, and TA=TJ. ELECTRICAL CHARACTERISTICS 2 |
Numéro de pièce similaire - UC2854B |
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Description similaire - UC2854B |
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