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UC3854
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所属类别：ACDC-和-DCDC-电源
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产品名称：高功率因子前置稳压器
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厂商：TI
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生产批号：10+
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封装：16PDIP, 16SOIC, 20PLCC
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库存状态：有库存
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库存量：2000
- 最低订购量：1
- 详细资料：
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The UC1854 provides an active power supply system that would otherwise be brought up for non-sinusoidal current factor correction for the sine power line. The unit implements all the necessary control functions to establish a power supply that optimally utilizes the existing power line current while minimizing line current distortion. To do this, the UC1854 contains a voltage amplifier, analog multiplier/divider, current amplifier, and fixed-frequency PWM. In addition, the UC1854 includes a power MOSFET gate driver compatible, 7.5V reference line estimator, load comparator, low power detector, and overcurrent comparator.
The UC1854 adopts an average current control mode to achieve stable and low-distortion current control at a fixed frequency.
characteristic
- PWM to control the boost power factor of 0.99
- 限制线电流失真
- Global action, no switch
- Feedforward line adjustment
- Average current mode control
- Low noise sensitivity
- Low starting current
- Fixed frequency PWM driver
- Low offset analog multiplier/divider
- 1A Totem Pole Gate Driver
- Precision voltage reference
parameter
| |
|
|
UC3854 |
| On/off of undervoltage lockout threshold (5) |
|
|
16/10 |
| Working power supply (max) (five) |
|
|
30 |
| Starting Current (mA) |
|
|
1.5 |
| Operating Supply Current (mA) |
|
|
10 |
| Vref (V) |
|
|
7.5 |
| Vref's Thor (%) |
|
|
1.3 |
| Duty Cycle (Max) (%) |
|
|
95 |
| Actual operating frequency (max) (MHz) |
|
|
0.2 |
| Pin/Pack |
|
|
16PDIP，16SOIC，20PLCC |
The ICs associated with the UC3854 include:
| Model |
Manufacturers |
lot number |
encapsulation |
illustrate |
| UC3854N-F |
UNITRODE |
05+ |
DIP-16P |
New original stock available |
| uc3854AN |
UC |
02+ |
DIP-16 |
Brand new original |
| 74HC38541A |
TI |
96+ |
SSOP-38P |
Original in stock |
| UG3854 |
UG |
03+ |
QFP-44 |
Original |
| BH3854AFS |
ROHM |
93+ |
SMD |
Brand new original |
| BH3854AS |
ROHM |
03+ |
DIP-32 |
Brand new original |
| UC3854BM |
TI |
99+ |
N／A |
Brand new original |
| UC3854B |
TI |
07+ |
16PDIP, 16SOIC |
Enhanced high-power factor pre-regulator |
| UC3854A |
TI |
10+ |
16PDIP, 16SOIC |
Enhanced high power factor pre-regulator |
| UC3854 |
TI |
10+ |
16PDIP, 16SOIC, 20PLCC |
High power factor pre-regulator |
| UC3854DW |
TI |
07+/08+ |
SOP |
|
| UC3854BDW |
FREESCAL |
0623+ |
SOP16 |
|
| UC3854N |
ON |
05+ |
DIP-8 |
|
| UC3854N |
ON |
05+ |
DIP-8 |
|
| UC3854N |
ON |
05+ |
DIP-8 |
|
| UC3854BN |
TI |
10+ |
DIP |
Enhanced high-power factor pre-regulator |
| UC3854ADW |
TI |
0831+ |
SOIC-16 |
|
| UC3854BN |
TI |
0820+ |
DIP-16 |
|
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