UC3844BD1R2G - ON Semiconductor

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

UC3844BD1R2G
Manufacturer

ON Semiconductor
ChipWorker Part#

CW645100
Category

Voltage Regulator
Package

SOIC-8
Description

Current Mode PWM Controller 1A 500kHz 8Pin SOIC N T/R
Documentation

Datasheet

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UC3844BD1R2G Specifications

Attribute	Attribute Value

Part Number	UC3844BD1R2G
Manufacturer	ON Semiconductor
ChipWorker Part#	CW645100
Category	Voltage Regulator
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	SOIC-8
Frequency	52 kHz
Halogen Free Status	Halogen Free
Number of Outputs	1 Output
Input Voltage (DC)	30.0 V
Output Voltage	5 V
Output Current	1 A
Supply Current	12 mA
Number of Positions	8 Position
Power Dissipation	702 mW
Rise Time	50 ns
Switching Frequency	500 kHz
Topology	Flyback, Forward, Step-Up, Step-Down
Thermal Resistance	178 ℃/W
Duty Cycle	48 %
Maximum Duty Cycle	48 %
Fall Time	50 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Power Dissipation (Max)	702 mW
Supply Voltage	10V ~ 30V
Supply Voltage (Max)	36 V
Supply Voltage (Min)	14 V
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Operating Temperature	0℃ ~ 70℃ (TA)
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
ECCN Code	EAR99

Product 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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