E-CMOS EC3228
The EC3228 is a single-phase, constant-on-time, synchronous PWM controller, which drives N-channel MOSFETs. The EC3228 steps down high voltage to generate low-voltage chipset or RAM supplies in notebook computers. The EC3228 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode.| Part No. | EC3228 |
|---|---|
| Datasheet | EC3228 Download |
| Manufacturer |  E-CMOS |
| Description | High-Performance PWM Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
FEATURES
The EC3228 is a single-phase, constant-on-time,● synchronous PWM controller, which drives N-channel
● MOSFETs. The EC3228 steps down high voltage to
● generate low-voltage chipset or RAM supplies in notebook
● computers. The EC3228 provides excellent transient response and
● accurate DC voltage output in either PFM or PWM Mode. In
● Pulse Frequency Mode (PFM), the EC3228 provides very
● high efficiency over light to heavy loads with loading-
● modulated switching frequencies. In PWM Mode, the
● converter works nearly at constant frequency for low-noise
● requirements.
● The EC3228 is equipped with accurate positive current-
● limit, output under-voltage, and output over-voltage protections, perfect for NB applications. The Power-On-
● Reset function monitors the voltage on VCC to prevent
● wrong operation during power-on. The EC3228 has a 1ms
● digital soft-start and built-in an integrated output
● discharge method for soft-stop. An internal integrated
● soft-start ramps up the output voltage with programmable
● slew rate to reduce the start-up current.
