UCC2891D

PWM controller, 120V, 2.5A, SOP

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Price:: US $0.81~0.95 / piece [Get Latest Price]

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Qty (lots)	Price/lot
1 ~ 10 :	0.95 / Piece
10 ~ 100 :	0.85 / Piece
100 ~ 1000 :	0.81 / Piece

PartNumber:: UCC2891D

Brand:: Texas Instruments - TI | Pack: SOP | D/C: 09+

Availability:: Supply Ability: 10000/Month Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

Quantity:: piece

Total Price:: US $0

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Products Upload time: 2013-01-22

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Part Number:UCC2891D
US $0.81 - 0.95
Quantity:

piece

Product Summary

The UCC2891D PWM controller is designed to simplify implementation of the various active clamp/reset switching power topologies. The UCC2891D is a peak current-mode, fixed-frequency, high-performance pulse width modulator. The UCC2891D includes the logic and the drive capability for theauxiliary switch with a simple method of programming the critical delays for proper active clamp operation.Applications of the UCC2891D include: 150-W to 700-W SMPS, High-Efficiency, Low EMI/RFI Off-Line or DC/DC Converters, Server, 48-V Telecom, Datacom and High Power Adapter, LCD-TV and PDP-TV.

Parametrics

UCC2891D absolute maximum ratings: (1) Line input voltage range, VIN: 120V; (2) Supply voltage range, VDD: 15V (IDD < 10 mA); (3) Analog inputs FB, CS: -0.3 to (VREF + 0.3) not to exceed 6; (4) Output source current (peak), IO_SOURCE: 2.5A, Output sink current (peak), IO_SINK: -2.5A; (5) Operating junction temperature range, TJ: -55°C to 150°C; (6) Storage temperature, Tstg: -65°C to 150°C; (7) ESD rating: 1500V; (8) Lead temperature, T 1,6 mm (1/16 inch) from case for 10 seconds: 300°C.

Features

UCC2891D features: (1) Ideal for Active Clamp/Reset Forward, Flyback Converters; (2) rovides Complementary Auxiliary Driver with Programmable Deadtime (Turn-On Delay) between AUX and MAIN Switches; (3) Peak Current-Mode Control with Cycle-by-Cycle Current Limiting; (4) 110-V Input Startup Regulator on UCC2891/3; (5) TrueDrive 2-A Sink, 2-A Source Outputs; (6) Accurate Line UV and Line OV Threshold; (7) Programmable Slope Compensation; (8) 1.0-MHz Synchronizable Oscillator; (9) 1.0-MHz Synchronizable Oscillator; (10) Precise Programmable Maximum Duty Cycle.