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UC2843
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Category:ACDC- and -DCDC-power supply
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Product Name:Automotive current mode PWM controller
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Manufacturers:TI
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Production Batch Number:10+
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Encapsulation:14SOIC, 8SOIC
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Stock Status:There is stock
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Stock Quantity:50000
- Minimum order quantity: 1
- Details:
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The UC1842/3/4/5 family provides the necessary functions to implement a fixed frequency current mode control scheme with minimal external component count off-wire or DC-to-DC fixed frequency current mode. Внутренняя схема реализации включает в себя блокировку при пониженном напряжении с пусковым током менее 1 мА, точную регулировку опорной точности на входе усилителя ошибок, логическую регистрацию для обеспечения работы блокировки, ШИМ-компаратор с обеспечением контроля предела тока и конструкцию выходного каскада тотемного полюса источника или приемника высокого пикового тока. Output stage, driving N-channel MOSFETs suitable for low off.
The difference between this family member is the undervoltage lockout threshold and the maximum duty cycle range.
characteristic
- Optimize offline and DC-DC converters
- Low start-up current" (
- Automatic Forward Compensation
- The pulse is limited by the pulse current
- Enhanced load response characteristics
- Undervoltage lockout
- Double pulse suppression
- The totem pole outputs a large current
- Internal fine-tuning bandgap reference
- 500 - kHz operation
parameter
| |
|
UC2843 |
|
| topology |
|
Boost, reverse, forward |
|
| Control method |
|
Current mode |
|
| Duty cycle (max.) (%) |
|
100 |
|
| Frequency (max) (khertz) |
|
450 |
|
| On/Off of Undervoltage Lockout Threshold (5) |
|
8.4/7.6 |
|
| Pins/Packets |
|
14SOIC，8PDIP，8SOIC |
|
| (#) Regulated output |
|
One |
|
| Operating temperature range(°C) |
|
-40 to 85 |
|
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