UCC38C44P
ObsoleteIC OFFLINE CTRLR PWM UVLO 8DIP
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UCC38C44P
ObsoleteIC OFFLINE CTRLR PWM UVLO 8DIP
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Technical Specifications
Parameters and characteristics for this part
| Specification | UCC38C44P |
|---|---|
| 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 | Through Hole |
| 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 | 0.3 in |
| Package / Case | 8-DIP |
| Package / Case | 7.62 mm |
| Supplier Device Package | 8-PDIP |
| Synchronous Rectifier | False |
| Topology | Flyback, Boost, Forward Converter |
| Voltage - Supply (Vcc/Vdd) [Max] | 18 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 9 V |
UCC38C44 Series
Commercial, 20-V, low-power current-mode PWM controller, 14.5-V/9-V UVLO, 50% duty cycle
| Part | Control Features | Package / Case | Package / Case | Package / Case | Number of Outputs | Frequency - Switching [Max] | Mounting Type | Output Type | Function | Output Phases | Duty Cycle (Max) [Max] | Topology | Operating Temperature [Max] | Operating Temperature [Min] | Supplier Device Package | Output Configuration | Synchronous Rectifier | Clock Sync | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Package / Case [y] | Package / Case [x] | Package / Case [custom] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments | Frequency Control | 0.3 in | 8-DIP | 7.62 mm | 1 | 1 MHz | Through Hole | Transistor Driver | Step-Up Step-Up/Step-Down | 1 | 48 % | Boost Flyback Forward Converter | 70 °C | 0 °C | 8-PDIP | Positive | 18 V | 9 V | |||||
Texas Instruments | Frequency Control | 8-SOIC | 1 | 1 MHz | Surface Mount | Transistor Driver | Step-Up Step-Up/Step-Down | 1 | 48 % | Boost Flyback Forward Converter | 70 °C | 0 °C | 8-SOIC | Positive | 18 V | 9 V | 3.9 mm | 0.154 in | |||||
Texas Instruments | Frequency Control | 3 mm | 8-MSOP 8-TSSOP | 1 | 1 MHz | Surface Mount | Transistor Driver | Step-Up Step-Up/Step-Down | 1 | 48 % | Boost Flyback Forward Converter | 70 °C | 0 °C | Positive | 18 V | 9 V | 0.118 in | ||||||
Texas Instruments | Frequency Control | 3 mm | 8-MSOP 8-TSSOP | 1 | 1 MHz | Surface Mount | Transistor Driver | Step-Up Step-Up/Step-Down | 1 | 48 % | Boost Flyback Forward Converter | 70 °C | 0 °C | Positive | 18 V | 9 V | 0.118 in | ||||||
Texas Instruments | Frequency Control | 8-SOIC | 1 | 1 MHz | Surface Mount | Transistor Driver | Step-Up Step-Up/Step-Down | 1 | 48 % | Boost Flyback Forward Converter | 70 °C | 0 °C | 8-SOIC | Positive | 18 V | 9 V | 3.9 mm | 0.154 in |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
Description
General part information
UCC38C44 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
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