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

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Description

The UCC28C43DGK is a low-power BiCMOS current-mode Pulse Width Modulation (PWM) Controller with pin-for-pin compatibility to the industry standard UC384xA family and UC384x family of PWM controllers. It provides necessary features to control fixed frequency and peak current-mode power supplies. The device offers high-frequency operation up to 1MHz with low start-up and operating currents, thus minimizing start-up loss and low operating power consumption for improved efficiency. It features a very fast current-sense-to-output delay time of 35ns and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.
Fast 35ns Cycle-by-cycle overcurrent limiting
Rail-to-rail output swings with 25ns rise and 20ns fall times
±1% Initial trimmed
2.5V Error amplifier reference
Trimmed oscillator discharge current
Under-voltage lockout

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UCC28C43DGK Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	VSSOP-8
Frequency	1 MHz
Supply Voltage (DC)	7.60V (min)
Number of Outputs	1 Output
Input Voltage (DC)	18.0 V
Output Voltage	18 V
Output Current	1 A
Supply Current	3 mA
Number of Positions	8 Position
Number of Regulated Outputs	1 Output
Rise Time	25 ns
Switching Frequency	1000 kHz
Thermal Shutdown	No
Topology	Boost, Flyback, Forward
Duty Cycle	100 %
Maximum Duty Cycle	96 %
Fall Time	20 ns
Operating Temperature (Max)	105 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage (Max)	20 V
Supply Voltage (Min)	7.6 V
Input Voltage	18 V
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Size-Length	3 mm
Size-Width	3 mm
Size-Height	0.97 mm
Operating Temperature	-40℃ ~ 105℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15

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