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UCC2804
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所属类别：ACDC-和-DCDC-电源
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产品名称：低功耗 BiCMOS 电流模式 PWM
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厂商：TI
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生产批号：09+
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封装：8PDIP, 8SOIC, 8TSSOP
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库存状态：有库存
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库存量：2530
- 最低订购量：1
- 详细资料：
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The high-speed, low-power IC contains all the control and driver components required for UCC1800/1/2/3/4/5 home switching power supplies for offline and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts.
These devices feature the same pinout configuration as the UC1842/3/4/5 series, and also offer internal full-cycle soft-start and internally leading current-sense input blanking value-added capabilities.
The UCC1800/1/2/3/4/5 series offers a choice of packages, temperature ranges, maximum duty cycles, and a selection of key various voltage levels. For example UCC1803 it is best to mate with UCC1805 reference parts to a battery-powered system, while higher reference and UCC1802 with UCC1804 higher UVLO hysteresis are ideal for use in off-line power supplies.
characteristic
- Typical starting power supply current of 100μA
- Typical operating current is 500μA
- to 1 MHz operation
- Internal soft start
- Internal soft start failure
- Built-in current sense signal with cutting-edge blanking
- 1 amp totem pole output
- The typical response of the 70NS ball valve ranges from current detection to gate drive output
- 1.5% tolerance voltage reference
- The same pin is the sum UC3842A of UC3842
parameter
| |
|
UCC2804 |
|
| topology |
|
Boost, reverse, forward |
|
| Control method |
|
Current mode |
|
| Duty Cycle (Max) (%) |
|
50 |
|
| Frequency (max) (kHz) |
|
1000 |
|
| On/off of undervoltage lockout threshold (5) |
|
12.5/8.3 |
|
| Pin/Pack |
|
8PDIP，8SOIC，8TSSOP |
|
| (#) Regulated output |
|
One |
|
| Operating Temperature Range (°C) |
|
-40 to 85 |
0 to 70 |
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The UC1861 IC - The 1868 series is ideal for the control of zero-current and zero-voltage switching quasi-resonant converters. The difference between this is from the UVLO threshold and the output selection of members of the various combination device family results. In addition, a single-pulse steering logic configuration scheme is available for both time zero-current systems (UC1865 - 1868) or shutdown times (UC1861 - 1864) for zero-voltage switching applications |