STMicroelectronics L4984
This is preliminary information on a new product now in development or undergoing evaluation.| Part No. | L4984 |
|---|---|
| Datasheet | L4984 Download |
| Manufacturer |  STMicroelectronics |
| Description | CCM PFC controller |
| Buy | Stock & Price |
FEATURES
● 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 gate driver with active pull-down during UVLO and voltage clamp
● SSOP10 package
APPLICATIONS
● PFC pre-regulators for: – IEC61000-3-2 and JEIDA-MITI compliant SMPS in excess of 1 KW – Desktop PC, server, web server Datasheet — preliminary data SSOP10 Table 1. Device summary Order code Package L4984D L4984DTR SSOP10 Packaging Tube Tape and reel August 2012 Doc ID 023489 Rev 1 Details are subject to change without notice.
