UC3845 Datasheet, PDF - Alldatasheet

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UC3845 Datasheet, PDF

Search Partnumber : Match&Start with "UC3845" - Total : 216 ( 1/11 Page)

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	UC3845	96Kb/11P	CURRENTMODE PWM CONTROLLER Oct-1998
Texas Instruments	UC3845	433Kb/8P	Current Mode PWM Controller
	UC3845	937Kb/3P	Current Mode PWM Controller
	UC3845	720Kb/24P	CURRENT MODE PWM CONTROLLER
	UC3845	708Kb/28P	CURRENT MODE PWM CONTROLLER
	UC3845	693Kb/28P	CURRENT MODE PWM CONTROLLER
	UC3845	3Mb/56P	Current-Mode PWM Controllers
Fairchild Semiconductor	UC3845	127Kb/12P	SMPS Controller
Unisonic Technologies	UC3845	298Kb/7P	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
Fairchild Semiconductor	UC3845	133Kb/12P	SMPS Controller
Texas Instruments	UC3845	3Mb/63P	UCx84x Current-Mode PWM Controllers REVISED OCTOBER 2024
Guangdong Youtai Semico...	UC3845	874Kb/7P	Low Start-Up and Operating Current
Guangdong Youtai Semico...	UC3845	881Kb/7P	Low Start-Up and Operating Current
Unisonic Technologies	UC3845-D08-T	298Kb/7P	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
	UC3845-S08-R	298Kb/7P	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
	UC3845-S08-T	298Kb/7P	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
STMicroelectronics	UC3845A	167Kb/16P	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER May-2004
STMicroelectronics	UC3845A	129Kb/15P	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER Mar-1999
Texas Instruments	UC3845A	517Kb/11P	Current Mode PWM Controller
Microsemi Corporation	UC3845A	227Kb/8P	CURRENT MODE PWM CONTROLLER

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UC3845 Datasheet, PDF [Distributor]

Distributor	Part #	Manufacturer Datasheet	Description	Buy Now
Element14	UC3845BDG	ONSEMI	PWM CNTRL, 36V, 250KHZ, 5VREF, 14SOIC; Input Voltage:-; Output Voltage:13.4V; Output Current:200mA; ...
	UC3845BNG	ONSEMI	PWM CONTROLLER, CURRENT MODE, 52KHZ, DIP; Input Voltage:-; Output Voltage:5V; Output Current:1A; Sup...

UC3845 Distributor

Distributor	Part #	Manufacturer	Description	Price	Qty. BuyNow

Brief Description of UC3845

The UC3845 is a pulse width modulation (PWM) controller IC used in switch-mode power supplies. It is part of the UCx84x series of PWM controllers and is commonly employed in applications such as power supplies, battery chargers, and voltage regulators. Here are some key features and specifications of the UC3845:

Operating Mode:

The UC3845 operates in voltage mode control, providing a constant output voltage.
PWM Controller:

It is primarily used to control the duty cycle of a power switching device (such as a power transistor) to regulate the output voltage.
Frequency Range:

The UC3845 can operate at a frequency range typically adjustable between tens of kilohertz to several hundred kilohertz.
Voltage Reference:

The IC includes an internal voltage reference, which is used as a reference for the feedback loop.
Feedback Input:

The UC3845 has a feedback input for sensing the output voltage and comparing it to the reference voltage to regulate the duty cycle.
Error Amplifier:

An error amplifier compares the feedback voltage with the reference and adjusts the duty cycle accordingly.
Soft Start:

The IC may include a soft-start feature to gradually increase the duty cycle during startup, reducing stress on components.
Shutdown Input:

The UC3845 typically includes a shutdown pin for enabling/disabling the PWM controller.
Current Sense Input:

It may have a current sense input for implementing current mode control in certain applications.
Output Driver:

The IC can drive an external power transistor (MOSFET or BJT) to control the power flow.
Overcurrent Protection:

Some versions of the UC3845 include overcurrent protection features.
Temperature Stability:

Designed to operate reliably over a range of temperatures.
Package:

The IC is commonly available in 8-pin DIP (Dual In-line Package) and SOIC (Small Outline Integrated Circuit) packages.
Applications:

Switch-mode power supplies, voltage regulators, battery chargers, and other power management applications.

*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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