SY20112ARC

High Efficiency, 1.2MHz, 3A Buck

SY20112ARC High Efficiency, 1.2MHz, 3A Buck Datasheet

Parameters
Features
Description

Part Number	SY20112ARC
Vin_min (V)	2.5
Vin_max (V)	5.5
Io_max (A)	3
Channels
Vo_min (V)	0.6
Fsw (MHz)	1.2
Vref (V)
Vref Accuracy	±1.5%
Iq (uA)	50
Rdson1	100
Rdson2	60
Soft Start	0.7
Package	SOT563
Topology
Protection Mode	OVP,Hic-cup SCP
Features / Special Function	Power Good Indicator,Auto-Discharge,100% Dropout Operation
Temp Range

2.5V to 5.5V Input Voltage Range
50μA Low Quiescent Current
Low RDS(ON) for Internal Switches (Top/Bottom) 100mΩ /60mΩ
High Switching Frequency 1.2MHz Minimizes the External Components
Internal Soft-start Limits the Inrush Current
100% Dropout Operation
Hic-cup for Short Circuit Protection
Output Auto Discharge Function
RoHS Compliant and Halogen Free
Compact Package: SOT563

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 R_DS(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 components need to be selected for the targeted application specifications.

The SY20112 is available in a space-saving, low-profile SOT563 package.