설명
유통업체에서 제공한 Texas Instruments UC2843AQ에 대한 설명입니다.
Current Mode PWM Controller 20-PLCC -40 to 85
Boost Buck Buck-Boost Flyback Forward Tube S-PQCC-J20 Positive DC to DC switching controller 1A 8.965mm 25V Up to 500kHz
the uc2842a/3a/4a/5a family of control ics is a pin for pin compatible improved version of the uc2842/3/4/5 family. providing the necessary features to control current mode switched mode power supplies this family has the following improved features. start up current is guaranteed to be less than 0.5 ma. oscillator discharge is trimmed to 8.3 ma. during under voltage lockout the output stage can sink at least 10 ma at less than 1.2 v for vcc over 5 v. the difference between members of this family are shown in the table below.
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기술 사양
Physical
Case/PackagePLCC
Number of Pins20
Technical
Duty Cycle100 %
Fall Time50 ns
Frequency450 kHz
Max Duty Cycle100 %
Max Frequency500 kHz
Max Operating Temperature85 °C
Max Supply Voltage30 V
Min Operating Temperature-40 °C
Number of Outputs1
Output Voltage15 V
Rise Time50 ns
Switching Frequency500 kHz
TopologyBoost, Flyback
Dimensions
Height4.06 mm
Length8.96 mm
Width8.96 mm