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Match, Like  UC3842(19) UC3842A(15) UC3842B(17) UC3842D(9) UC3842G(5) UC3842J(3) UC3842M(1) UC3842N(9) UC3842P(2) UC3842T(1)
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Included  *UC3842*(2)
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UC3842 Datasheet, PDF

Search Partnumber : Match&Start with "UC3842" - Total : 314 ( 1/16 Page)
ManufacturerPart #DatasheetDescription
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NXP Semiconductors
UC3842 PHILIPS-UC3842 Datasheet
74Kb/8P
   Current-mode PWM controller
August 31, 1994
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Texas Instruments
UC3842 TI-UC3842 Datasheet
693Kb/28P
[Old version datasheet]   CURRENT MODE PWM CONTROLLER
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STMicroelectronics
UC3842 STMICROELECTRONICS-UC3842 Datasheet
96Kb/11P
   CURRENTMODE PWM CONTROLLER
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Texas Instruments
UC3842 TI-UC3842 Datasheet
693Kb/28P
[Old version datasheet]   CURRENT MODE PWM CONTROLLER
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STMicroelectronics
UC3842 STMICROELECTRONICS-UC3842 Datasheet
129Kb/15P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
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Fairchild Semiconductor
UC3842 FAIRCHILD-UC3842 Datasheet
133Kb/12P
   SMPS Controller
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STMicroelectronics
UC3842 STMICROELECTRONICS-UC3842 Datasheet
135Kb/15P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
logo
Texas Instruments
UC3842 TI1-UC3842 Datasheet
3Mb/56P
[Old version datasheet]   Current-Mode PWM Controllers
UC3842 TI-UC3842 Datasheet
433Kb/8P
[Old version datasheet]   Current Mode PWM Controller
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Hotchip Technology Co.,...
UC3842 HOTCHIP-UC3842 Datasheet
690Kb/8P
   Trimmed Oscillator Discharge Current for Precise Duty Cycle Control
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Fairchild Semiconductor
UC3842 FAIRCHILD-UC3842 Datasheet
127Kb/12P
   SMPS Controller
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Guangdong Kexin Industr...
UC3842 KEXIN-UC3842 Datasheet
310Kb/3P
   CURRENT MODE PWM CONTROLLER
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Texas Instruments
UC3842 TI-UC3842 Datasheet
937Kb/3P
[Old version datasheet]   Current Mode PWM Controller
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Guangdong Youtai Semico...
UC3842 UMW-UC3842 Datasheet
874Kb/7P
   Low Start-Up and Operating Current
logo
Texas Instruments
UC3842 TI-UC3842 Datasheet
720Kb/24P
[Old version datasheet]   CURRENT MODE PWM CONTROLLER
logo
Guangdong Youtai Semico...
UC3842 UMW-UC3842 Datasheet
881Kb/7P
   Low Start-Up and Operating Current
logo
Texas Instruments
UC3842 TI-UC3842 Datasheet
708Kb/28P
[Old version datasheet]   CURRENT MODE PWM CONTROLLER
UC3842 TI-UC3842 Datasheet
693Kb/28P
[Old version datasheet]   CURRENT MODE PWM CONTROLLER
UC3842 TI-UC3842 Datasheet
693Kb/28P
[Old version datasheet]   CURRENT MODE PWM CONTROLLER
UC3842A TI1-UC3842A Datasheet
1Mb/45P
[Old version datasheet]   Current-Mode PWM Controller

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UC3842 Distributor

DistributorPart #ManufacturerDescriptionPriceQty.
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Brief Description of UC3842


The UC3842 is a widely used pulse-width modulation (PWM) controller IC (integrated circuit) designed for switch-mode power supply (SMPS) and voltage regulator applications. It is part of the UC384x series of controllers and is known for its ability to provide precise control of the duty cycle of a switching transistor, typically a power MOSFET, to regulate the output voltage of the power supply efficiently. Here are some key features and specifications of the UC3842 PWM controller:

Voltage Mode Controller: The UC3842 is a voltage mode controller, meaning it regulates the output voltage by adjusting the duty cycle of the switching transistor based on a feedback signal from the output.

Wide Input Voltage Range: It can typically operate over a wide input voltage range, making it suitable for various power supply applications.

Adjustable Frequency: The switching frequency of the PWM controller can be adjusted using external components to suit the requirements of the specific application. It typically operates in the range of tens to hundreds of kilohertz.

External Components: The UC3842 requires minimal external components for operation, which simplifies circuit design.

Soft-Start Function: The IC may include a soft-start function to limit the inrush current and prevent excessive stress on the power components during startup.

Error Amplifier: It features an error amplifier for comparing the output voltage to a reference voltage and generating an error signal that controls the duty cycle.

Package: The UC3842 is commonly available in PDIP (Plastic Dual In-line Package) and SOIC (Small Outline Integrated Circuit) packages, making it suitable for through-hole and surface-mount applications.

Applications: The UC3842 is widely used in power supply applications, including AC-DC and DC-DC converters, voltage regulators, battery chargers, and many other applications that require stable and efficient voltage regulation.

Protections: Some versions of the UC3842 may include protection features such as overcurrent protection, overvoltage protection, and over-temperature protection.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.

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