SY20118ADFC

High Efficiency, 1MHz, 4A Synchronous Step Down Regulator

SY20118ADFC High Efficiency, 1MHz, 4A Synchronous Step Down Regulator Datasheet

Parameters
Features
Description

Part Number	SY20118ADFC
Vin_min (V)	2.5
Vin_max (V)	5.5
Io_max (A)	4
Channels
Vo_min (V)	0.6
Fsw (MHz)	1
Vref (V)
Vref Accuracy	±1.5%
Iq (uA)	55
Rdson1	85
Rdson2	60
Soft Start
Package	DFN2x2-8
Topology
Protection Mode
Features / Special Function	Power Good Indicator, Hic-cup SCP, Auto Discharge
Temp Range

2.5V to 5.5V Input Voltage Range
55μA Low Quiescent Current
Low R_DS(ON) for Internal Switches (Top/Bottom): 85mΩ /60mΩ
High Switching Frequency 1MHz Minimizes the External Components
Internal Soft-start Limits the Inrush Current
100% Dropout Operation
Power Good Indicator
Hic-cup for Short Circuit Protection
Output Auto Discharge Function
RoHS Compliant and Halogen Free
Compact Package: DFN2×2-8

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 R_DS(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.

The SY20118A is available in a compact DFN2×2-8 package.