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Price update：a months ago
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2500
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$140M Growth in 5 Years
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Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
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The UCC38083/4/5/6 is a family of BiCMOS pulse width modulation (PWM) controllers for dc-to-dc or off-line fixed-frequency current-mode switching power supplies. The dual output stages are configured for the push-pull topology. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 110 ns, limiting each output’s duty cycle to less than 50%.
The new UCC3808x family is based on the UCC3808A architecture. The major differences include the addition of a programmable slope compensation ramp to the CS signal and the removal of the error amplifier. The current flowing out of the ISET pin through an external resistor is monitored internally to set the magnitude of the slope compensation function. This device also includes an internal discharge transistor from the CS pin to ground, which is activated at each clock cycle after the pulse is terminated. This discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current sense delay.
The UCC38083 and the UCC38084 devices have a typical soft-start interval time of 3.5 ms while the UCC38085 and the UCC38086 has less than 100 μs for applications where internal soft-start is not desired.
The UCC38083 and the UCC38085 devices have the turn on/off thresholds of the 12.5 V / 8.3 V, while the UCC38084 and the UCC38086 has the turn on/off thresholds of 4.3 V / 4.1 V. Each device is offered in 8-pin TSSOP (PW), 8-pin SOIC (D) and 8-pin PDIP (P) packages.
Feature
- Programmable Slope Compensation
- Internal Soft-Start on the UCC38083/4
- Cycle-by-Cycle Current Limiting
- Low Start-Up Current of 120 μA and 1.5 mA Typical Run Current
- Single External Component Oscillator Programmable from 50 kHz to 1 MHz
- High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability
- Current Sense Discharge Transistor to Improve Dynamic Response
- Internally Trimmed Bandgap Reference
- Undervoltage Lockout with Hysteresis
- APPLICATIONS
- High-Efficiency Switch-Mode Power Supplies
- Telecom dc-to-dc Converters
- Point-of-Load or Point-of-Use Power Modules
- Low-Cost Push-Pull and Half-Bridge Applications
The UCC38083/4/5/6 is a family of BiCMOS pulse width modulation (PWM) controllers for dc-to-dc or off-line fixed-frequency current-mode switching power supplies. The dual output stages are configured for the push-pull topology. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 110 ns, limiting each output’s duty cycle to less than 50%.
The new UCC3808x family is based on the UCC3808A architecture. The major differences include the addition of a programmable slope compensation ramp to the CS signal and the removal of the error amplifier. The current flowing out of the ISET pin through an external resistor is monitored internally to set the magnitude of the slope compensation function. This device also includes an internal discharge transistor from the CS pin to ground, which is activated at each clock cycle after the pulse is terminated. This discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current sense delay.
The UCC38083 and the UCC38084 devices have a typical soft-start interval time of 3.5 ms while the UCC38085 and the UCC38086 has less than 100 μs for applications where internal soft-start is not desired.
The UCC38083 and the UCC38085 devices have the turn on/off thresholds of the 12.5 V / 8.3 V, while the UCC38084 and the UCC38086 has the turn on/off thresholds of 4.3 V / 4.1 V. Each device is offered in 8-pin TSSOP (PW), 8-pin SOIC (D) and 8-pin PDIP (P) packages.
Product Attributes
| TYPE | DESCRIPTION | Select all |
|---|---|---|
| Supplier Device Package | 8-SOIC | |
| Internal Switch(s) | No | |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | |
| Output Isolation | Isolated | |
| Operating Temperature | -40°C ~ 85°C (TA) | |
| Product Status | Active | |
| Control Features | Frequency Control | |
| Package | Tape & Reel (TR) | |
| Fault Protection | Current Limiting | |
| Frequency - Switching | 50kHz ~ 1MHz | |
| Duty Cycle | 49% | |
| Voltage - Supply (Vcc/Vdd) | 8.3V ~ 15V | |
| Voltage - Start Up | 12.5 V | |
| Topology | Push-Pull | |
| Mounting Type | Surface Mount |
Blog
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$1.38
Price update：a months ago
Available in stock：
2500
Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
View All Product from Texas InstrumentsBlog
- Unveiling the Future: The Surge of Microcontrollers in 2024In the dynamic world of electronic components, microcontrollers stand out as a testament to innovation and versatility. As we edge closer to 2024, the landscape for microcontrollers and semiconductors, spearheaded by giants like STMicroelectronics, Texas Instruments, and Microchip, is set for remarkable transformation.
- Microcontrollers vs. Microprocessors: Unveiling the Core Differences for Embedded Systems EngineeringSeasoned professionals in the realm of embedded systems engineering and product development within the electronics sphere often grapple with distinguishing between microcontrollers and microprocessors. Despite their foundational role in the design and fabrication of a myriad of electronic gadgets, understanding their unique functionalities based on mere definitions can be challenging:
- A Deep Dive into the Global Ceramic Capacitors MarketJoin us in exploring the emerging subplot of environmental consciousness within the global ceramic capacitors market.
- Mastering Current Measurement with MicrocontrollersUnlock precise current measurement secrets with Microcontrollers! Conquer challenges, meet superhero solutions, and revolutionize accuracy with on-chip Analog Core Independent Peripherals (CIPs).
- What is a Rectifier Diode: A Guide to BeginnersMeet the unsung heroes of electronics—Rectifier Diodes! Explore their magic, applications, and join the behind-the-scenes adventure into gadget power.
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