UC3843BVD1R2G - ON Semiconductor

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

Part No

UC3843BVD1R2G
Manufacturer

ON Semiconductor
ChipWorker Part#

CW1738359
Category

PWM Controller IC
Package

SOIC-8
Description

UC3843BVD1R2G; PWM Current Mode Controller; 1A; 250kHz; 30V; 8Pin SOIC
Documentation

Datasheet

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UC3843BVD1R2G Specifications

Attribute	Attribute Value

Part Number	UC3843BVD1R2G
Manufacturer	ON Semiconductor
ChipWorker Part#	CW1738359
Category	PWM Controller IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	SOIC-8
Frequency	500 kHz
Supply Voltage (DC)	12.0V (min)
Halogen Free Status	Halogen Free
Number of Outputs	1 Output
Input Voltage (DC)	30.0 V
Output Voltage	5 V
Output Current	200 mA
Supply Current	12 mA
Number of Positions	8 Position
Power Dissipation	702 mW
Rise Time	50 ns
Switching Frequency	500 kHz
Topology	Flyback
Duty Cycle	96 %
Maximum Duty Cycle	96 %
Fall Time	50 ns
Operating Temperature (Max)	105 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	702 mW
Supply Voltage	7.6V ~ 30V
Supply Voltage (Max)	25 V
Supply Voltage (Min)	12 V
Input Voltage	30 V
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Operating Temperature	-40℃ ~ 105℃ (TA)
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17
ECCN Code	EAR99

Product Description

The UC3843BVD1R2G is a high-performance fixed frequency current-mode Pulse Width Modulation (PWM) Controller specifically designed for off-line and DC to DC converter applications offering the designer a cost-effective solution with minimal external components. This integrated circuit features a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, programmable output deadtime and a latch for single pulse metering.
Trimmed oscillator for precise frequency control
Automatic feed forward compensation
Internally trimmed reference with undervoltage lockout
High current totem pole output
Undervoltage lockout with hysteresis
Low startup and operating current

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