GENERAL DESCRIPTION
In addition, it operates at pseudoconstant frequency of 600kHz under heavy load conditions to minimize the size of inductor and capacitor. SY8386B also provides a fixed 3.3V LDO with 100mA current capability, which can be used to power the external peripheries, such as the keyboard controller in notebook. Silergy’s proprietary Instant-PWM™ fast-response, constant-on-time (COT) PWM control method supports high input/output voltage ratios (low duty cycles), and fast transient response while maintaining a near constant operating frequency over line, load and output voltage ranges. This control method provides stable operation without complex compensation and even with low ESR ceramic capacitors. The SY8386B operates over a wide input voltage range from 4.5V to 24V. Cycle-by-cycle current limit, input under voltage lock-out, internal soft-start, output under voltage protection, over voltage protection and thermal shutdown provide safe operation in all operating conditions.
Silergy
