产品概述
The UCC28C44D 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.
- 50µA Start-up current, 100µA maximum
- Low operating current of 2.3mA at 52kHz
- Fast 35ns cycle-by-cycle over-current limiting
- ±1A Peak output current
- Rail-to-rail output swings with 25ns rise and 20ns fall times
- ±1% Initial trimmed 2.5V error amplifier reference
- Trimmed oscillator discharge current
- New under-voltage lockout versions
- Green product and no Sb/Br
应用
电源管理
产品信息
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- 20V
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- 18V
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- 1A
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- 9V
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- 20V
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- SOIC
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- 8引脚
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- 1MHz
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- -40°C
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- 105°C
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- -
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- -
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- MSL 1 -无限制