Datasheet Texas Instruments UC1842AJ883B — 数据表

制造商	Texas Instruments
系列	UC1842A
零件号	UC1842AJ883B

数据表

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应用须知

• 下载
  DN-30 Programmable Electronic Circuit Breaker
  PDF, 164 Kb, 档案已发布: Sep 5, 1999
  This design note describes a programmable electronic circuit breaker that uses the UC3843A control IC to facilitate a high-speed turnoff following an overcurrent condition. This low-cost industry-standard IC contains the required protection features and drive capability in a single 8-pin device.
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  DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection
  PDF, 51 Kb, 档案已发布: Sep 5, 1999
  Excessive power dissipation can occur in switch-mode power supplies during startup and overload conditions. Many sophisticated PWM controllers provide the means for protection against these problems; however simple low-cost controllers require additional circuitry. This design note describes a circuit that uses only one additional resistor and transistor to enhance the performance of the UC3842A
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  DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit
  PDF, 155 Kb, 档案已发布: Sep 5, 1999
  The UC1842/3/4/5 family of control ICs can implement off-line or DC-to-DC fixed-frequency current-mode control schemes with a minimal external parts count. This design note describes a circuit with low startup current (less than 0.5mA) MOSFET-compatible undervoltage lockout thresholds programmable restart-delay HICCUP fault protection auxiliary 5V precision reference and overvoltage/overtemper
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  DN-27 UC1842/UC1842A Family - Summary of Functional Differences
  PDF, 21 Kb, 档案已发布: Sep 5, 1999
  The UC1842A/3A/4A/5A family of control ICs is a pin-for-pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current-mode switched-mode power supplies this device has been improved for higher frequency off-line power supplies. This new A series of controllers UC1842A/43A/44A/45A is superior to its predecessors in startup current requirements
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  DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty
  PDF, 39 Kb, 档案已发布: Sep 5, 1999
  This design note details programming frequency and maximum duty cycle using the UC3842 and UC3842-A PWM oscillator ICs. Simplified equations are used to develop obtainable ranges for parameters over IC tolerances.
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  DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode
  PDF, 66 Kb, 档案已发布: Sep 5, 1999
  This design note explains the differences between voltage-mode and current-mode switching power supply topologies. It includes a circuit diagram for each mode and suggests criteria for choosing which mode to use.
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  DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802
  PDF, 42 Kb, 档案已发布: Sep 5, 1999
  The UCC3802 offers numerous advantages that allow the power supply design engineer to meet requirements for lower power for battery-operated equipment higher switching frequencies for reduced magnetics size higher levels of circuit integration for improved reliability and lower cost. The UCC3802 family of devices is pin-out compatible with the UC3842 and UC3842A families; however it is not plu

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制造商分类

• Semiconductors > Space & High Reliability > Power Management Products > Offline and Isolated DC/DC Controller and Converter