UCC38C45DGKR
ActiveCOMMERCIAL, 20-V, LOW-POWER CURRENT-MODE PWM CONTROLLER, 8.4-V/7.6-V UVLO, 50% DUTY CYCLE
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UCC38C45DGKR
ActiveCOMMERCIAL, 20-V, LOW-POWER CURRENT-MODE PWM CONTROLLER, 8.4-V/7.6-V UVLO, 50% DUTY CYCLE
Technical Specifications
Parameters and characteristics for this part
| Specification | UCC38C45DGKR |
|---|---|
| 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 [Max] | 70 °C |
| Operating Temperature [Min] | 0 °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 |
UCC38C45 Series
| Part | Supplier Device Package | Synchronous Rectifier | Clock Sync | Output Phases | Duty Cycle (Max) [Max] | Operating Temperature [Max] | Operating Temperature [Min] | Mounting Type | Number of Outputs | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Frequency - Switching [Max] | Output Configuration | Package / Case | Package / Case [y] | Package / Case [x] | Topology | Control Features | Output Type | Function | Package / Case [custom] | Package / Case | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments | 8-SOIC | 1 | 48 % | 70 °C | 0 °C | Surface Mount | 1 | 18 V | 7.6 V | 1 MHz | Positive | 8-SOIC | 3.9 mm | 0.154 in | Boost Flyback Forward Converter | Frequency Control | Transistor Driver | Step-Up Step-Up/Step-Down | |||||
Texas Instruments | 8-SOIC | 1 | 48 % | 70 °C | 0 °C | Surface Mount | 1 | 18 V | 7.6 V | 1 MHz | Positive | 8-SOIC | 3.9 mm | 0.154 in | Boost Flyback Forward Converter | Frequency Control | Transistor Driver | Step-Up Step-Up/Step-Down | |||||
Texas Instruments | 1 | 48 % | 70 °C | 0 °C | Surface Mount | 1 | 18 V | 7.6 V | 1 MHz | Positive | 8-MSOP 8-TSSOP | Boost Flyback Forward Converter | Frequency Control | Transistor Driver | Step-Up Step-Up/Step-Down | 0.118 in | 3 mm | ||||||
Texas Instruments | 8-PDIP | 1 | 48 % | 70 °C | 0 °C | Through Hole | 1 | 18 V | 7.6 V | 1 MHz | Positive | 8-DIP | Boost Flyback Forward Converter | Frequency Control | Transistor Driver | Step-Up Step-Up/Step-Down | 0.3 in | 7.62 mm | |||||
Texas Instruments | 8-SOIC | 1 | 48 % | 70 °C | 0 °C | Surface Mount | 1 | 18 V | 7.6 V | 1 MHz | Positive | 8-SOIC | 3.9 mm | 0.154 in | Boost Flyback Forward Converter | Frequency Control | Transistor Driver | Step-Up Step-Up/Step-Down |
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 | $ 1.60 | |
| 10 | $ 1.44 | |||
| 25 | $ 1.35 | |||
| 100 | $ 1.15 | |||
| 250 | $ 1.08 | |||
| 500 | $ 0.95 | |||
| 1000 | $ 0.78 | |||
| Digi-Reel® | 1 | $ 1.60 | ||
| 10 | $ 1.44 | |||
| 25 | $ 1.35 | |||
| 100 | $ 1.15 | |||
| 250 | $ 1.08 | |||
| 500 | $ 0.95 | |||
| 1000 | $ 0.78 | |||
| Tape & Reel (TR) | 2500 | $ 0.73 | ||
| 5000 | $ 0.70 | |||
| 12500 | $ 0.68 | |||
| Texas Instruments | LARGE T&R | 1 | $ 1.52 | |
| 100 | $ 1.26 | |||
| 250 | $ 0.90 | |||
| 1000 | $ 0.68 | |||
Description
General part information
UCC38C45 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.
Documents
Technical documentation and resources