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Datasheet Texas Instruments TL3842B — Даташит

ПроизводительTexas Instruments
СерияTL3842B
Datasheet Texas Instruments TL3842B

High-Performance Current-Mode PWM Controller

Datasheets

High Performance Current-Mode PWM Controllers datasheet
PDF, 720 Кб, Версия: B, Файл опубликован: 2 июл 2007
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Цены

ШИМ-контроллеры на токовых переключателях Current Mode PWM Controller
LifeElectronics
Россия
TL3842B
Texas Instruments
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Acme Chip
Весь мир
TL3842B
Texas Instruments
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Сравнительное тестирование аккумуляторов EVE Energy и Samsung типоразмера 18650

Статус

TL3842BDTL3842BD-8TL3842BDRTL3842BDR-8TL3842BPTL3842BPE4
Статус продуктаВ производствеВ производствеВ производствеВ производствеВ производствеВ производстве
Доступность образцов у производителяНетНетДаНетНетНет

Корпус / Упаковка / Маркировка

TL3842BDTL3842BD-8TL3842BDRTL3842BDR-8TL3842BPTL3842BPE4
N123456
Pin14814888
Package TypeDDDDPP
Industry STD TermSOICSOICSOICSOICPDIPPDIP
JEDEC CodeR-PDSO-GR-PDSO-GR-PDSO-GR-PDSO-GR-PDIP-TR-PDIP-T
Package QTY5075250025005050
CarrierTUBETUBELARGE T&RLARGE T&RTUBETUBE
МаркировкаTL3842B3842BTL3842B3842BTL3842BPTL3842BP
Width (мм)3.913.913.913.916.356.35
Length (мм)8.654.98.654.99.819.81
Thickness (мм)1.581.581.581.583.93.9
Pitch (мм)1.271.271.271.272.542.54
Max Height (мм)1.751.751.751.755.085.08
Mechanical DataСкачатьСкачатьСкачатьСкачатьСкачатьСкачать

Параметры

Parameters / ModelsTL3842BD
TL3842BD
TL3842BD-8
TL3842BD-8
TL3842BDR
TL3842BDR
TL3842BDR-8
TL3842BDR-8
TL3842BP
TL3842BP
TL3842BPE4
TL3842BPE4
Control MethodCurrentCurrentCurrentCurrentCurrentCurrent
Duty Cycle(Max), %100100100100100100
Frequency(Max), kHz500500500500500500
Frequency(Min), kHz494949494949
Gate Drive(Typ), A0.20.20.20.20.20.2
Рабочий диапазон температур, Cот 0 до 70от 0 до 70от 0 до 70от 0 до 70от 0 до 70от 0 до 70
Package GroupSOICSOICSOICSOICPDIPPDIP
RatingCatalogCatalogCatalogCatalogCatalogCatalog
Special FeaturesAdjustable Switching Frequency,Error Amplifier,Multi-topologyAdjustable Switching Frequency,Error Amplifier,Multi-topologyAdjustable Switching Frequency,Error Amplifier,Multi-topologyAdjustable Switching Frequency,Error Amplifier,Multi-topologyAdjustable Switching Frequency,Error Amplifier,Multi-topologyAdjustable Switching Frequency,Error Amplifier,Multi-topology
TopologyBoost,Flyback,ForwardBoost,Flyback,ForwardBoost,Flyback,ForwardBoost,Flyback,ForwardBoost,Flyback,ForwardBoost,Flyback,Forward
UVLO Thresholds On/Off, В16/1016/1016/1016/1016/1016/10
Vin(Max), В303030303030
Vin(Min), В17.517.517.517.517.517.5

Экологический статус

TL3842BDTL3842BD-8TL3842BDRTL3842BDR-8TL3842BPTL3842BPE4
RoHSСовместимСовместимСовместимСовместимСовместимСовместим
Бессвинцовая технология (Pb Free)ДаДа

Application Notes

  • DN-89 Comparing the UC3842, UCC3802, and UCC3809 Primary Side PWM Controllers
    PDF, 75 Кб, Файл опубликован: 5 сен 1999
    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
  • U-100A UC3842/3/4/5 Provides Low-Cost Current-Mode Control
    PDF, 507 Кб, Файл опубликован: 5 сен 1999
    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
  • DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection
    PDF, 51 Кб, Файл опубликован: 5 сен 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
  • DN-30 Programmable Electronic Circuit Breaker
    PDF, 164 Кб, Файл опубликован: 5 сен 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.
  • Understanding Buck Power Stages In Switchmode Power Supplies
    PDF, 173 Кб, Файл опубликован: 4 мар 1999
    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
  • DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit
    PDF, 155 Кб, Файл опубликован: 5 сен 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
  • DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty
    PDF, 39 Кб, Файл опубликован: 5 сен 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.
  • DN-27 UC1842/UC1842A Family - Summary of Functional Differences
    PDF, 21 Кб, Файл опубликован: 5 сен 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
  • DN-65 Considerations in Powering BiCMOS ICs
    PDF, 100 Кб, Файл опубликован: 5 сен 1999
    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
  • Understanding Boost Power Stages In Switchmode Power Supplies
    PDF, 149 Кб, Файл опубликован: 4 мар 1999
    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
  • DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode
    PDF, 66 Кб, Файл опубликован: 5 сен 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.
  • UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers
    PDF, 280 Кб, Файл опубликован: 7 фев 2002
    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
  • U-111 Practical Considerations in Current Mode Power Supplies
    PDF, 787 Кб, Файл опубликован: 5 сен 1999
    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.
  • DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802
    PDF, 42 Кб, Файл опубликован: 5 сен 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
  • Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps
    PDF, 61 Кб, Файл опубликован: 23 мар 2000
    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.
  • Understanding Buck-Boost Power Stages in Switchmode Power Supplies (Rev. A)
    PDF, 363 Кб, Версия: A, Файл опубликован: 28 май 2002

Модельный ряд

Классификация производителя

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

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