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UCC28C45DR
AC/DC Converters BiCMOS Low-Power Current Mode
Brands: TEXAS INSTRUMENTS INC
Mfr.Part #: UCC28C45DR
Datasheet: UCC28C45DR Datasheet (PDF)
Package/Case: 8-SOIC
Product Type: AC/DC Converters
RoHS Status:
Stock Condition: 8269 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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Add To BomUCC28C45DR General Description
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 7 V 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 1 MHz, 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 35 ns for superior overload protection at the power switch, and a ±1-A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.
The UCCx8C4x family is offered in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.
Features
- Enhanced replacement for UCx84x and UCx84xA family with pin-to-pin compatibility
- Operating frequency: 1 MHz Maximum
- 50-µA Startup Current, 100-µA Maximum
- Low operating current: 2.3 mA (at fOSC = 52 kHz)
- Fast, cycle-by-cycle overcurrent limiting: 35-ns
- Peak driving current: ±1-A. Rail-to-rail output:
- 25-ns rise time
- 20-ns fall time
- ±1% accurate 2.5-V error amplifier reference
- Trimmed oscillator discharge current
- Undervoltage lockout protections
- VSSOP-8 package minimizes board space
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Source Content uid | UCC28C45DR | Pbfree Code | Yes |
| Rohs Code | Yes | Part Life Cycle Code | Active |
| Ihs Manufacturer | TEXAS INSTRUMENTS INC | Part Package Code | SOIC |
| Package Description | SOP, SOP8,.25 | Pin Count | 8 |
| Reach Compliance Code | compliant | ECCN Code | EAR99 |
| HTS Code | 8542.39.00.01 | Samacsys Manufacturer | Texas Instruments |
| Additional Feature | ALSO OPERATES IN CURRENT MODE | Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE | Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 18 V | Input Voltage-Min | 12 V |
| Input Voltage-Nom | 15 V | JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 | Length | 4.9 mm |
| Moisture Sensitivity Level | 1 | Number of Functions | 1 |
| Number of Terminals | 8 | Operating Temperature-Max | 105 °C |
| Operating Temperature-Min | -40 °C | Output Current-Max | 1 A |
| Package Body Material | PLASTIC/EPOXY | Package Code | SOP |
| Package Equivalence Code | SOP8,.25 | Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE | Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified | Seated Height-Max | 1.75 mm |
| Supply Voltage-Max (Vsup) | 18 V | Supply Voltage-Min (Vsup) | |
| Surface Mount | YES | Switcher Configuration | SINGLE |
| Switching Frequency-Max | 1000 kHz | Technology | BICMOS |
| Temperature Grade | INDUSTRIAL | Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING | Terminal Pitch | 1.27 mm |
| Terminal Position | DUAL | Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Width | 3.9 mm |
Shipping
| Shipping Type | Ship Fee | Lead Time | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
 |
REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time：Shipping fee depend on different zone and country.
Payment
| Terms of payment | Hand Fee | |
|---|---|---|
 |
Wire Transfer | charge US$30.00 banking fee. |
 |
Paypal | charge 4.0% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
Part points
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The UCC28C45DR chip is a voltage-controlled duty cycle pulse width modulation (PWM) controller. It is designed for low-power offline flyback converters and operates with a wide input voltage range. The chip utilizes current-mode control for better noise immunity and regulation, while providing protection features such as cycle-by-cycle current limiting and thermal shutdown. It is commonly used in power supply applications to regulate output voltage efficiently and reliably.
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Equivalent
There are no direct equivalent products to the UCC28C45DR chip. However, other options such as the UCC28C4x family of devices, including UCC28C42, UCC28C43, and UCC28C44, may offer similar functionalities and characteristics for voltage mode PWM controller applications. -
Features
The UCC28C45DR is a high-performance current mode PWM controller that operates at a frequency of up to 500 kHz. It features an integrated 1.5A, 500V power MOSFET, a programmable input voltage UVLO, a cycle-by-cycle current limit, a soft start capability, and an adjustable current sense threshold. -
Pinout
The UCC28C45DR is a dual-channel, synchronous PWM controller with a pin count of 8. It is used for DC-DC converter applications and employs peak current mode control for improved transient response. The device supports adjustable switching frequency, cycle-by-cycle current limit, and adjustable soft-start functionality. -
Manufacturer
The UCC28C45DR is manufactured by Texas Instruments (TI), an American semiconductor company. TI is involved in designing and manufacturing various integrated circuits, including power management, amplifiers, microcontrollers, and other analog and digital devices. It is known for its wide range of products and solutions used in different industries such as automotive, industrial, consumer electronics, and communications. -
Application Field
The UCC28C45DR is a high-performance current mode PWM controller that is commonly used in power supply applications, including offline power supplies, isolated and non-isolated DC-DC converters, and LED drivers. It offers various protection features and supports multi-topology solutions, making it versatile for a wide range of applications. -
Package
The UCC28C45DR chip comes in a package type called SOIC (Small Outline Integrated Circuit). Its form is surface mount and the size is standard, measuring approximately 3.9 mm x 8.65 mm.
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