UCC28C45D

TEXAS INSTRUMENTS  UCC28C45D  控制器, PWM, 18V-12V电源, 1 MHz, 18V/1A输出, SOIC-8

The is a BiCMOS Low-power Current Mode PWM Controller with pin-for-pin compatibility to the industry standard UC384xA family and UC384x family of PWM controllers. Providing necessary features to control fixed frequency, peak current-mode power supplies, this controller offers the following performance advantages. The device offers high-frequency operation up to 1MHz with low start-up and operating currents, thus minimizing start-up loss and low operating power consumption for improved efficiency. The device also features a very fast current-sense-to-output delay time of 35ns and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

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50µA Start-up current, 100µA maximum

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Low operating current of 2.3mA at 52kHz

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Fast 35ns cycle-by-cycle over-current limiting

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±1A Peak output current

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Rail-to-rail output swings with 25ns rise and 20ns fall times

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±1% Initial trimmed 2.5V error amplifier reference

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Trimmed oscillator discharge current

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New under-voltage lockout versions

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Green product and no Sb/Br