SY20018A1AAC

High Efficiency, 1.5MHz, 1A Synchronous Step Down Regulator

SY20018A1AAC High Efficiency, 1.5MHz, 1A Synchronous Step Down Regulator Datasheet

Parameters
Features
Description

Part Number	SY20018A1AAC
Vin_min (V)	2.5
Vin_max (V)	5.5
Io_max (A)	1
Channels
Vo_min (V)	0.6
Fsw (MHz)	1.5
Vref (V)
Vref Accuracy	±2%
Iq (uA)	40
Rdson1	260
Rdson2	160
Soft Start	1
Package	SOT23-5
Topology
Protection Mode	Hic-cup SCP
Features / Special Function	100% Dropout Operation
Temp Range

2.5V to 5.5V Input Voltage Range
50μA Low Quiescent Current
Low R_DS(ON) for Internal Switches (Top/Bottom): 260mΩ /160mΩ
High Switching Frequency 1.5MHz Minimizes the External Components
Internal Soft-start Limits the Inrush Current
100% Dropout Operation
Reliable Short Circuit Protection
Without Output Auto Discharge Function
RoHS Compliant and Halogen Free
Compact Package: SOT23-5

The SY20018A1 is a high efficiency 1.5MHz synchronous step down DC/DC regulator, which is capable of delivering up to 1A output current. It can operate over a wide input voltage range from 2.5V to 5.5V and integrate a main switch and a synchronous switch with very low R_DS(ON) to minimize the conduction loss.

The low output voltage ripple, the small external inductor and the capacitor sizes are achieved with 1.5MHz switching frequency.