SY20112
SY20112 is 1.2MHz Synchronous Step-Down Regulator manufactured by Silergy.
Description
The SY20112 high-efficiency 1.2MHz 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 3A with a low quiescent current of 50µA. To minimize conduction loss, it integrates a main switch and a synchronous switch with very low RDS(ON).
The SY20112 adopts constant off-time and peak current mode control. The SY20112 is highly integrated, so only the input and output capacitors, inductor, and resistor-divider ponents need to be selected for the targeted application specifications.
The SY20112 is available in a space-saving, lowprofile SOT563 package.
Features
- 2.5V~5.5V Input Voltage Range
- Up to 3A Output Current
- Constant Off-time and Peak Current Mode
Control
- Low RDS(ON) for Internal Switches: 100mΩ
Top, 60mΩ Bottom
- Low 50µA Quiescent Current
- High 1.2MHz Switching Frequency
Minimizes Required External ponents
- Internal Soft-Start Limits Inrush Current
- 100% Dropout Operation
- Power-Good Indicator
- Hiccup Mode for Short-Circuit Protection
- Output Auto-Discharge Function
- Ro HS-pliant and Halogen-Free
- pact SOT563 Package
Applications
- Set-Top Box
- USB Dongle
- Media Player
- Smartphone
Typical Application
VIN: 2.5-5. 5V
ON/ OFF
L1
VOUT
EN...
