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UC3845BVNG - ON Semiconductor
Manufacturer:
ON Semiconductor
ManyChip's Part#:
MC25434361
Category:
DC to DC Converter
Package:
DIP-8
Datasheet:
Datasheet 3D Model
Description:
UC3845BVNG, PWM Current Mode Controller, 1A, 250kHz, 36V, 8Pin PDIP
Stock Locations:
Availability:
218 pcs In Stock
MOQ:
1 pcs
Unit Price:
$ 0.64

Updated at 17/06/2025 10:30:15(UTC+8)

Certifications

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Description

High Performance Current Mode Controllers
The UC3844B, UC3845B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and dc−dc converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature an oscillator, a temperaturecompensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Features
•Trimmed Oscillator for Precise Frequency Control
•Oscillator Frequency Guaranteed at 250 kHz
•Current Mode Operation to 500 kHz Output Switching Frequency
•Output Deadtime Adjustable from 50% to 70%
•Automatic Feed Forward Compensation
•Latching PWM for Cycle−By−Cycle Current Limiting
•Internally Trimmed Reference with Undervoltage Lockout
•High Current Totem Pole Output
•Undervoltage Lockout with Hysteresis
•Low Startup and Operating Current
•These Devices are Pb−Free and are RoHS Compliant
•NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable

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UC3845BVNG Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Through Hole
Number of Pins	8 Pin
Case/Package	DIP-8
Frequency	52 kHz
Halogen Free Status	Halogen Free
Number of Outputs	1 Output
Input Voltage (DC)	30.0 V
Output Voltage	5.1 V
Output Current	1 A
Supply Current	12 mA
Number of Positions	8 Position
Power Dissipation	1.25 W
Rise Time	50 ns
Switching Frequency	500 kHz
Topology	Flyback, Forward, Step-Up, Step-Down
Duty Cycle	50 %
Maximum Duty Cycle	48 %
Fall Time	50 ns
Operating Temperature (Max)	105 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1250 mW
Supply Voltage	7.6V ~ 30V
Supply Voltage (Max)	25 V
	Show
Size-Length	10.02 mm
Size-Width	7.11 mm
Size-Height	5.33 mm
Operating Temperature	-40℃ ~ 105℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
ECCN Code	EAR99

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