SY20109BDFC

400nA ultra low IQ, 1.0MHz, 1.0A continuous Synchronous Step Down Regulator

SY20109BDFC 400nA ultra low IQ, 1.0MHz, 1.0A continuous Synchronous Step Down Regulator Datasheet

Parameters
Features
Description

Part Number	SY20109BDFC
Vin_min (V)	2.4
Vin_max (V)	6
Io_max (A)	1
Channels
Vo_min (V)	1.2
Fsw (MHz)	1
Vref (V)
Vref Accuracy
Iq (uA)	0.4
Rdson1	300
Rdson2	130
Soft Start
Package	DFN2x2-8
Topology
Protection Mode	Hic-cup SCP
Features / Special Function	Power Good Indicator,Auto-Discharge,100% Dropout Operation
Temp Range

2.4~6.0V Input Voltage Range
Ultra Low Quiescent Current Down to 400nA
Low R_DS(ON) for the Internal Switches (Top/Bottom) 300mΩ /130mΩ
Instant PWM Control to Achieve the Ultra Fast Load Transient Speed
High Switching Frequency 1.0MHz Minimizes the External Components
Internal Soft-start Limits the Inrush Current
Power Good Indicator
Hiccup Mode for Output Short Circuit Protection
100% Drop Out Operation
Output Auto Discharge Function
RoHS Compliant and Halogen Free
Compact Package: DFN2×2-8

The SY20109B is a 400nA ultra low quiescent current, 1.0MHz synchronous step down DC/DC regulator, which is capable of delivering up to 1.0A output current. It can operate over a wide input voltage range from 2.4V to 6.0V 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 at 1.0MHz switching frequency.