SY20118A Datasheet Summary
High-Efficiency, 1MHz, 4A Synchronous Step-Down Regulator
General Description
The SY20118A high-efficiency 1MHz synchronous step-down DC/DC regulator operates over a wide input voltage range of 2.5V to 5.5V, and can deliver an output current up to 4A with a low quiescent current of 55µA. It integrates a main switch and a synchronous switch with very low RDS(ON) to minimize conduction loss. The 1MHz switching frequency allows for low output-voltage ripple, as well as small external inductor and capacitor values.
The SY20118A is highly integrated, so only the input and output capacitors, inductor, and feedback resistors need to be selected for the targeted application specifications.
Features
- 2.5V to 5.5V Input Voltage Range
- Up to 4A Output Current
- Low RDS(ON) for Internal Switches: 85mΩ
Top, 60mΩ Bottom
- Low 55μA Quiescent Current
- High 1MHz Switching Frequency Minimizes
Required External ponents
- Internal Soft-Start Limits the Inrush Current
- 100% Dropout Operation
- Power-Good Indicator
- Hiccup Mode for Short-Circuit Protection
- Output Auto-Discharge Function
- RoHS-pliant and Halogen-Free
- pact Package: DFN2×2-8
The SY20118A is available in a pact DFN2×28 package.
Applications
- Set-Top Box
- USB Dongle
- Media Player
- Smartphone
Typical Application
VIN: 2.5-5.5V
CIN
RPG
ON/...