The UCC2891PW is a peak current-mode, fixed-frequency pulse width modulator designed for high-performance DC-DC switching applications. It features a 110-V input startup regulator, making it suitable for off-line and DC/DC converters. The device supports active clamp/reset forward and flyback converter topologies, providing a complementary auxiliary driver with programmable deadtime between main and auxiliary switches. Key specifications include low output jitter, cycle-by-cycle current limiting, and programmable slope compensation. The UCC2891PW also offers precise programmable maximum duty cycle and soft start capabilities. It operates within a temperature range of -40¬8C to 125¬8C and is available in a TSSOP-16 package. This controller is ideal for applications requiring high efficiency and low EMI/RFI, such as server power supplies and high-power adapters.
IC REG CTRLR MULT TOP 16TSSOP
Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up/Step-Down DC-DC Controller IC 16-TSSOP
Manufacturer: Texas Instruments
Win Source Part Number: 143535-UCC2891PW
Packaging: Tube/Rail
Output Type: Transistor Driver
Topology: Flyback, Forward Converter
Frequency - Switching: 250kHz
Control Features: Current Limit, Enable, On Time Control, Ramp, Soft Start
Number of Outputs: 1
Synchronous Rectifier: No
Output Phases: 1
Duty Cycle (Max): 70%
Clock Sync: Yes
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 85°C (TA)
Case / Package: 16-TSSOP
Purpose: Step-Up/Step-Down
Supply Voltage - Operating: 8.5 V to 16 V
Popularity: Medium
Fake Threat In the Open Market: 49 pct.
Supply and Demand Status: Limited
IC REG CTRLR MULT TOP 16TSSOP
Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up/Step-Down DC-DC Controller IC 16-TSSOP
IC REG CTRLR MULT TOP 16TSSOP
Switching Controllers Current Mode Active Clamp
| ODG (Origin Data Global) | DigiKey | Win Source Electronics | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | Lingto Electronic Limited | VAST STOCK CO., LIMITED | |
|---|---|---|---|---|---|---|---|
| Product Category | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | UCC2891PW | 296-17240-5-ND | 143535-UCC2891PW | UCC2891PW | UCC2891PW | UCC2891PW | UCC2891PW |
| Product Name | DC DC Switching Controllers | DC DC Switching Controllers | PMIC - PMIC - Voltage Regulators - DCDC Switching Controllers - UCC2891PW | Integrated Circuits (ICs) - Power Management (PMIC) - DC DC Switching Controllers | DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers | Switching Controllers |
| Configuration / Function | Buck; Boost | Flyback, Forward Converter | |||||
| Package Type | Other; 16-TSSOP (0.173", 4.40mm Width) | Other; "16-TSSOP (0.173"", 4.40mm Width)" | SSOP; Other; 16-TSSOP | SSOP | SSOP; Other; 16-TSSOP (0.173\", 4.40mm Width) | ||
| VIN | 8.5 to 16 volts | 8.5 to 16 volts | 8.5 to 16 volts | ||||
| fsw | 250 kHz | 250 kHz | 250 kHz | 250 kHz | 250 kHz | 250 kHz | |
| Duty Cycle | 70 | 70 | 70 | 70 |
