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Texas Instruments TL3842P

Производитель:Texas Instruments
Серия:TL3842
Модель:TL3842P

Current-Mode PWM Controller 8-PDIP 0 to 70

Документы:

  • Скачать » Datasheet
  • Скачать » Application Notes, PDF, 75 Кб, 05-09-1999
    DN-89 Comparing the UC3842, UCC3802, and UCC3809 Primary Side PWM Controllers
    Despite the fact that the UC3842 and the UCC3802 PWM Controllers are pin-for-pin compatible, they are not drop-in replacements for each other. Designed as the next generation '42, the UCC3809 also has differences that prevent a simple drop-in substitute. This design note will help the user change from either the UC3842 or the UCC3802 to the UCC3809 in an existing design. A table identifies the mos
  • Скачать » Application Notes, PDF, 507 Кб, 05-09-1999
    U-100A UC3842/3/4/5 Provides Low-Cost Current-Mode Control
    The fundamental challenge of power supply design is to realize simultaneously two conflicting objectives: good electrical performance and low cost. The UC3842/3/4/5 control ICs are integrated pulse-width modulators (PWMs). These inexpensive IC controllers provide all the performance advantages of current-mode operation. In addition, the UC3842 series is optimized for efficient power-sequencing of
  • Скачать » Application Notes, PDF, 51 Кб, 05-09-1999
    DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection
    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
  • Скачать » Application Notes, PDF, 164 Кб, 05-09-1999
    DN-30 Programmable Electronic Circuit Breaker
    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.
  • Скачать » Application Notes, PDF, 155 Кб, 05-09-1999
    DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit
    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
  • Скачать » Application Notes, PDF, 39 Кб, 05-09-1999
    DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty
    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.
  • Скачать » Application Notes, PDF, 21 Кб, 05-09-1999
    DN-27 UC1842/UC1842A Family - Summary of Functional Differences
    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 supplie
  • Скачать » Application Notes, PDF, 100 Кб, 05-09-1999
    DN-65 Considerations in Powering BiCMOS ICs
    Bipolar linear integrated circuits have been with us for years in the form of PWM and PFC controllers, supervisory circuits, and other circuits. Since these devices have traditionally used relatively high-voltage (35V) bipolar processes, powering was not a concern. In addition, many of these ICs contained high-current protection zeners to keep higher voltages from damaging the devices. With a numb
  • Скачать » Application Notes, PDF, 173 Кб, 04-03-1999
    Understanding Buck Power Stages In Switchmode Power Supplies
    A switching power supply consists of the power stage and the control circuit. The power stage performs the basic power conversion from the input voltage to the output voltage and includes switches and the output filter. This report addresses the buck power stage only and does not cover control circuits. Detailed steady-state and small-signal analysis of the buck power stage operating in continuous
  • Скачать » Application Notes, PDF, 149 Кб, 04-03-1999
    Understanding Boost Power Stages In Switchmode Power Supplies
    A switching power supply consists of the power stage and the control circuit. The power stage performs the basic power conversion from the input voltage to the output voltage and includes switches and the output filter. This report addresses the boost power stage only and does not cover control circuits. The report includes detailed steady-stage and small-signal analysis of the boost power stage o
  • Скачать » Application Notes, PDF, 66 Кб, 05-09-1999
    DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode
    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.
  • Скачать » Application Notes, PDF, 280 Кб, 07-02-2002
    UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers
    Since their introduction in the mid 1980?s, the bipolar UC3842 family of Pulse width modulation (PWM)controllers has grown to become the most widely-used control strategy in the power supply industry. [1] The reasons for success are quite clear, the devices feature an elegantly simple yet very effective control architecture, they use only 8 pins, they can drive MOSFET gates directly and they offer
  • Скачать » Application Notes, PDF, 787 Кб, 05-09-1999
    U-111, Practical Considerations in Current Mode Power Supplies
    This application note explains the numerous PWM functions and ways to maximize their usefulness. It covers practical circuit design considerations, such as slope compensation, gate drive circuitry, external control functions, synchronization, and paralleling current-mode controlled modules. Circuit diagrams and simplified equations are included.
  • Скачать » Application Notes, PDF, 42 Кб, 05-09-1999
    DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802
    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
  • Скачать » Application Notes, PDF, 61 Кб, 23-03-2000
    Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps
    The switch-mode power supply primary current is often sensed using a power resistor. Using an op amp to amplify the current-sense signal can reduce cost and improve noise performance and efficiency. This report reviews the advantages of using an op amp circuit and analyzes the design criteria needed to choose the proper op amp.
  • Скачать » Application Notes, PDF, 363 Кб, Rev. A, 28-05-2002
    Understanding Buck-Boost Power Stages in Switchmode Power Supplies (Rev. A)

На английском языке: Datasheet Texas Instruments TL3842P

    TL3842P на РадиоЛоцман.Цены — от 14,30 до 46,00 руб.
    Исполнение: DIP8-300. PWM CONTROLLER, CURR MODE, PDIP8; Controller Type:PWM; Voltage, Input Max:5.5V; Voltage, Output Max:30V; Current, Output Max:200mA; Output Type:Totem Pole;...
    Цены на TL3842P
    ПоставщикПроизводительНаименованиеЦена
    ЭлитанTexas InstrumentsTL3842P14,30 руб.
    ICdaromTexas InstrumentsTL3842Pот 15,36 руб.
    PL-1KA3842B (TL3842P)от 18,60 руб.
    КимTexas InstrumentsTL3842P46,00 руб.
    КремнийTexas InstrumentsTL3842Pпо запросу
    Все 22 предложений от 12 поставщиков »

Статус продуктаВ производстве (Рекомендуется для новых разработок)
RoHSСовместим
Бессвинцовая технология (Pb Free)Да
Доступность образцов у производителяНет

Параметры:

Approx. Price (US$)0.26 | 1ku
Control MethodCurrent
Duty Cycle(Max)(%)100
Frequency(Max)(kHz)500
Operating Temperature Range(C)0 to 70
Package GroupPDIP
RatingCatalog
Special FeaturesAdjustable Switching Frequency
Error Amplifier
Multi-topology
TopologyBoost
Flyback
Forward
UVLO Thresholds On/Off(V)16/10
Vin(Max)(V)30
Vin(Min)(V)17.5

Корпус / Упаковка / Маркировка:

Pin8
Package TypeP
Industry STD TermPDIP
JEDEC CodeR-PDIP-T
Package QTY50
CarrierTUBE
Device MarkingTL3842P
Width (мм)6.35
Length (мм)9.81
Thickness (мм)3.9
Pitch (мм)2.54
Max Height (мм)5.08
Mechanical DataСкачать »

Классификация производителя:

Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > PWM and Resonant Controller

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