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UC3864
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Category:ACDC- and -DCDC-power supply
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Product Name:The IC-1868 series of UC1861 is best suited for the control of zero-current switching and zero-voltage switching quasi-resonant converters. This differs from UVLO's threshold and output selection to the members of the various combinations of device family results. In addition, a single-pulse steering logic configuration scheme is configured for either zero-current systems at the time (UC1865-1868) or zero-voltage switching applications at off-time (UC1861-1864).
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Manufacturers:TI
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Production Batch Number:08+
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Encapsulation:16PDIP
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Stock Status:There is stock
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Stock Quantity:6000
- Minimum order quantity: 1
- Details:
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The IC-1868 series of UC1861 is best suited for the control of zero-current switching and zero-voltage switching quasi-resonant converters. This differs from UVLO's threshold and output selection to the members of the various combinations of device family results. In addition, a single-pulse steering logic configuration scheme is configured for either zero-current systems at the time (UC1865-1868) or zero-voltage switching applications at off-time (UC1861-1864).
The main control module implementation consists of an error amplifier to compensate for the entire system cycle, driving a voltage-controlled oscillator (VCO) with programmable minimum and maximum frequencies. Triggered by the VCO, the maximum width of one program is generated at a time, and zero-modulated pulses can be compared by detection.
characteristic
- Control a zero-current switch (zero-current) or zero-voltage switch (zero-voltage switch) quasi-resonant converter
- Zero crossing terminates a single-shot trigger timer
- 1% accuracy, soft-start 5V reference
- Programmable delay after reboot failure
- Voltage controlled oscillator (VCO) and programmable minimum and maximum frequencies from 10kHz to 1MHz
- Low Start-up Current (150μA Typical)
- Dual 1 amp peak FET drivers
- UVLO options are available for offline or DC/DC applications
parameter
| |
|
UC3864 |
| topology |
|
Boost, reverse, forward |
| Control method |
|
Voltage mode |
| Duty cycle (max.) (%) |
|
One |
| Frequency (max) (khertz) |
|
450 |
| On/Off of Undervoltage Lockout Threshold (5) |
|
8 / 7 |
| Pins/Packets |
|
16PDIP |
| (#) Regulated output |
|
One |
| Operating temperature range(°C) |
|
0 to 70 |
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TI |
08+ |
16PDIP |
The IC-1868 series of UC1861 is best suited for the control of zero-current switching and zero-voltage switching quasi-resonant converters. This differs from UVLO's threshold and output selection to the members of the various combinations of device family results. In addition, a single-pulse steering logic configuration scheme is configured for either zero-current systems at the time (UC1865-1868) or zero-voltage switching applications at off-time (UC1861-1864). |
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