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UC1854L Datasheet(PDF) 2 Page - Texas Instruments |
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UC1854L Datasheet(HTML) 2 Page - Texas Instruments |
2 / 13 page Supply Voltage VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V 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 oC to +150oC Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . . . . . +300 oC ABSOLUTE MAXIMUM RATINGS 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 DIL–16 & SOIC-16 (Top View) J, N & DW Packages Unless otherwise stated, VCC=18V, RSET=15k to ground, CT=1.5nF to ground, PKLMT=1V, ENA=7.5V, VRMS=1.5V, IAC=100 µA, ISENSE=0V, CA Out=3.5V, VA Out=5V, VSENSE=7.5V, no load on SS, CA Out, VA Out, REF, GT Drv, –55 oC<TA<125oC for the UC1854, –40oC<TA<85oC for the UC2854, and 0 oC<TA<70oC for the UC3854, and TA=TJ. ELECTRICAL CHARACTERISTICS PARAMETER TEST CONDITIONS MIN TYP MAX UNITS OVERALL Supply Current, Off ENA=0V 1.5 2.0 mA Supply Current, On 10 16 mA VCC Turn-On Threshold 14.5 16 17.5 V VCC Turn-Off Threshold 9 10 11 V ENA Threshold, Rising 2.4 2.55 2.7 V ENA Threshold Hysteresis 0.2 0.25 0.3 V ENA Input Current ENA=0V –5.0 –0.2 5.0 µA VRMS Input Current VRMS=5V –1.0 –.01 1.0 µA VOLTAGE AMPLIFIER Voltage Amp Offset Voltage VA Out=5V –8 8 mV VSENSE Bias Current –500 –25 500 nA Voltage Amp Gain 70 100 dB Voltage Amp Output Swing 0.5 to 5.8 V Voltage Amp Short Circuit Current VA Out=0V –36 –20 –5 mA SS Current SS=2.5V –20 –14 –6 µA UC1854 UC2854 UC3854 Note 1: All voltages with respect to Gnd (Pin 1). Note 2: All currents are positive into the specified termi- nal. Note 3: ENA input is internally clamped to approximately 14V. Note 4: Consult Unitrode Integrated Circuits databook for information regarding thermal specifications and limita- 2 |
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Similar Description - UC1854L |
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