SY8253 Overview
The SY8253 is a high efficiency 500 kHz synchronous step-down DC/DC converter capable of delivering 3A current. The SY8253 operates over a wide input voltage range from 4.5V to 23V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with 500 kHz switching frequency.
SY8253 Key Features
- low RDS(ON) for internal switches (top/bottom): 105mΩ/50mΩ
- 4.5-23V input voltage range
- 3A output current capability
- 500 kHz switching frequency
- Instant PWM architecture to achieve fast transient
- Cycle-by-cycle peak current limitation
- Internal softstart limits the inrush current
- Hic-cup mode output short circuit protection
- ±1.5% 0.6V reference
- Power good indicator (SY8253AIC only)