Specification	UCC28C45DGKR

Clock Sync	False
Control Features	Frequency Control
Duty Cycle (Max) [Max]	48 %
Frequency - Switching [Max]	1 MHz
Function	Step-Up, Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [custom]	-40 °C, 105 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	8-MSOP, 8-TSSOP
Package / Case	3 mm
Package / Case [custom]	0.118 in
Synchronous Rectifier	False
Topology	Flyback, Boost, Forward Converter
Voltage - Supply (Vcc/Vdd) [Max]	18 V
Voltage - Supply (Vcc/Vdd) [Min]	7.6 V

UCC28C45-Q1 Series

Industrial, 20-V, low-power current-mode PWM controller, 8.4-V/7.6-V UVLO, 50% duty cycle

Part	Current - Supply	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Applications	Voltage - Supply [Max]	Voltage - Supply [Min]	Voltage - Input [Min]	Voltage - Input [Max]	Package / Case	Package / Case [y]	Package / Case [x]	Function	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Output Type	Duty Cycle (Max) [Max]	Number of Outputs	Operating Temperature [custom]	Output Phases	Topology	Frequency - Switching [Max]	Output Configuration	Control Features	Package / Case [custom]	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Qualification	Grade	Package / Case
Texas Instruments UCC28C45MDREP	2.3 mA	Surface Mount	125 °C	-55 °C	8-SOIC	PWM Controller	18 V	7.6 V	-3 V	6.3 V	8-SOIC	3.9 mm	0.154 in
Texas Instruments UCC28C45DR		Surface Mount			8-SOIC						8-SOIC	3.9 mm	0.154 in	Step-Up Step-Up/Step-Down	18 V	7.6 V	Transistor Driver	48 %	1	-40 °C 105 °C	1	Boost Flyback Forward Converter	1 MHz	Positive	Frequency Control
Texas Instruments UCC28C45DGKR		Surface Mount									8-MSOP 8-TSSOP			Step-Up Step-Up/Step-Down	18 V	7.6 V	Transistor Driver	48 %	1	-40 °C 105 °C	1	Boost Flyback Forward Converter	1 MHz	Positive	Frequency Control	0.118 in	3 mm
Texas Instruments UCC28C45DGK		Surface Mount									8-MSOP 8-TSSOP			Step-Up Step-Up/Step-Down	18 V	7.6 V	Transistor Driver	48 %	1	-40 °C 105 °C	1	Boost Flyback Forward Converter	1 MHz	Positive	Frequency Control	0.118 in	3 mm
Texas Instruments UCC28C45QDRQ1		Surface Mount			8-SOIC						8-SOIC	3.9 mm	0.154 in	Step-Up Step-Up/Step-Down	18 V	7.6 V	Transistor Driver	48 %	1		1	Boost Flyback Forward Converter	1 MHz	Positive	Frequency Control			-40 °C	125 °C	AEC-Q100	Automotive
Texas Instruments UCC28C45P		Through Hole			8-PDIP						8-DIP			Step-Up Step-Up/Step-Down	18 V	7.6 V	Transistor Driver	48 %	1	-40 °C 105 °C	1	Boost Flyback Forward Converter	1 MHz	Positive	Frequency Control		0.3 in					7.62 mm
Texas Instruments UCC28C45D		Surface Mount			8-SOIC						8-SOIC	3.9 mm	0.154 in	Step-Up Step-Up/Step-Down	18 V	7.6 V	Transistor Driver	48 %	1	-40 °C 105 °C	1	Boost Flyback Forward Converter	1 MHz	Positive	Frequency Control

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.49
		10	$ 1.60
		25	$ 1.37
		100	$ 1.11
		250	$ 0.98
		500	$ 0.90
		1000	$ 0.84
	Digi-Reel®	1	$ 2.49
		10	$ 1.60
		25	$ 1.37
		100	$ 1.11
		250	$ 0.98
		500	$ 0.90
		1000	$ 0.84
	Tape & Reel (TR)	2500	$ 0.77
		5000	$ 0.72
		7500	$ 0.70
		12500	$ 0.68
Texas Instruments	LARGE T&R	1	$ 1.32
		100	$ 1.09
		250	$ 0.78
		1000	$ 0.59

Description

General part information

UCC28C45-Q1 Series

The UCCx8C4x family are high-performance, current-mode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency.

In addition, lower startup voltage versions of 7V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 125°C, and the UCC38C4x series is specified for operation from 0°C to 85°C.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1MHz, suitable for high speed applications. The trimmed discharge current enables more precise programming of the maximum duty cycle and dead-time limit when compared to the UCCx8C4x family. Reduced start-up and operating currents minimizes start-up loss and low operating power consumption for improved efficiency. The device also features a fast current-sense-to-output delay time of 35ns for superior overload protection at the power switch, and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.