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The UCC28C43DR from Texas Instruments is a versatile current-mode Pulse Width Modulation (PWM) controller. It is suitable for multiple topologies including Boost, Flyback, and Forward converters. This device operates with an input voltage range of 7.6V to 18V and supports adjustable switching frequencies up to 1MHz.
Key electrical features include a maximum duty cycle of 96%, a fast cycle-by-cycle overcurrent limiting response time of 35ns, and a peak driving current of ±1A. It also incorporates undervoltage lockout (UVLO) protection at 8.4V/7.6V and a low startup current of 50μA, with a low operating current of 2.3mA at 52kHz.
The UCC28C43DR is available in an 8-SOIC package, designed for surface mount applications. Its compact size and robust feature set make it a suitable choice for power management designs requiring efficient and reliable control.
This controller is an enhanced replacement for the UCx84x and UCx84xA families, offering pin-to-pin compatibility with upgraded functionality. It features an accurate 2.5V error amplifier reference and trimmed oscillator discharge current.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.40 | $0.40 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage range is 7.6V to 18V.
The UCC28C43DR is available in an 8-SOIC package.
The maximum operating temperature is 105°C (TJ).
The maximum duty cycle is 96%.
The UCC28C43DR supports Boost, Flyback, and Forward converter topologies.
The switching frequency can be up to 1MHz.