Recherchez avec le numéro de pièce ainsi que le fabricant ou la description
. . . . 4 2 Block diagram . 5 3 Electrical characteristics . 9 4 Typical electrical performance . . . . . . .
• Line-modulated fixed-off-time (LM-FOT) control of CCM-operated PFC pre-regulators
• Proprietary LM-FOT modulator for nearly fixedfrequency operation
• Proprietary multiplier design for minimum THD of AC input current
• Fast “bi-directional” input voltage feedforward (1/V2 correction)
• Accurate adjustable output overvoltage protection
• Protection against feedback loop failure (latched shutdown)
• Inductor saturation protection
• AC brownout detection
• Digital leading-edge blanking on current sense
• Soft-start
• 1% (at Tj = 25 °C) internal reference voltage
• - 600 / + 800 mA totem pole ga.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | L4984 |
STMicroelectronics |
CCM PFC controller |
|
| 2 | L4981A |
STMicroelectronics |
POWER FACTOR CORRECTOR |
|
| 3 | L4981B |
STMicroelectronics |
POWER FACTOR CORRECTOR |
|
| 4 | L4985 |
STMicroelectronics |
CCM PFC controller |
|
| 5 | L4986 |
STMicroelectronics |
CCM PFC controller |
|
| 6 | L4987 |
STMicroelectronics |
VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT AND DROPOUT CONTROL FLAG |
|
| 7 | L4987CPT33TR |
STMicroelectronics |
Very low drop voltage regulators |
|
| 8 | L4987CPT50TR |
STMicroelectronics |
Very low drop voltage regulators |
|
| 9 | L4988 |
STMicroelectronics |
Automotive low drop voltage regulator |
|
| 10 | L4989 |
STMicroelectronics |
LOW POWER VOLTAGE REGULATOR |
|
| 11 | L4989D |
STMicroelectronics |
Low power voltage regulator |
|
| 12 | L4989MD |
STMicroelectronics |
Low power voltage regulator |
|