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UCC28C45
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所属类别：ACDC-和-DCDC-电源
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产品名称：BiCMOS 低功耗电流模式 PWM 控制器
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厂商：TI
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生产批号：09+
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封装：8MSOP, 8PDIP, 8SOIC
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库存状态：有库存
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库存量：12000
- 最低订购量：1
- 详细资料：
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The UCC38C4x home is a high-performance current-mode PWM controller. This is an enhanced version of BiCMOS with pin-to-pin compatibility with the industry standard UC384xA home and PWM controller UC384x home. In addition, the 7-volt low-voltage version of the start-up is available as a UCC38C40 and UCC38C41.
Providing the necessary features to control a fixed-frequency, peak-current-mode power supply, the series offers the following performance benefits: The device provides high operating frequencies up to one low start-up and operating current megahertz to improve efficiency, minimize start-up losses, and low operating power. The device also features a very fast current-detected output with a delay time of 35 nanoseconds and an improved peak output rise and fall time of ±1 for driving high currents directly from external MOSFETs.
characteristic
- Enhance pin-to-pin compatibility with home and replacement UC3842A
- 1 - MHz operation
- 50μA start-up current, 100μA max
- The low operating current of 2.3 mA is 52 kHz
- Periodic overcurrent protection for cycles as fast as 35 ns
- ± 1 peak output current
- Orbital time 25-ns rise and 20 nanosecond orbit output swing fall
- ± 1% of the initial edge of the 2.5-V error amplifier reference
- Side vibration discharge current
- New version of low voltage locking
- The MSOP-8 package reduces board space
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apply
- Switching power supply
- DC-to-DC converters
- Board-mounted power module
parameter
| |
UCC28C45 |
|
| topology |
Boost, reverse, forward |
|
| Control method |
Current mode |
|
| Duty Cycle (Max) (%) |
50 |
|
| Frequency (max) (kHz) |
1000 |
|
| On/off of undervoltage lockout threshold (5) |
8.4/7.6 |
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| Pin/Pack |
8MSOP，8PDIP，8SOIC |
|
| (#) Regulated output |
One |
|
| Operating Temperature Range (°C) |
-40 to 105, -40 to 85 |
|
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