SY2A23002BDFD

High-Efficiency, 5.5V, 2A Single Synchronous Buck Converter

SY2A23002BDFD High-Efficiency, 5.5V, 2A Single Synchronous Buck Converter Datasheet

Parameters
Features
Description

Part Number	SY2A23002BDFD
Vin_min (V)	2.8
Vin_max (V)	5.5
Io_max (A)	2
Channels	1
Vo_min (V)	0.6
Fsw (MHz)	2.35
Vref (V)	0.6
Vref Accuracy	±1.5%
Iq (uA)	22
Rdson1	120mΩ
Rdson2	85mΩ
Soft Start	0.2ms
Package	DFN2×2-8
Topology	Sync. Buck
Protection Mode	Hic-cup SCP
Features / Special Function	Power Good Indicator，Fixed Frequency PFM Mode
Temp Range	-40°C ~125°C

2.8V to 5.5V Input Voltage Range
Up to 2A Output Current
External Adjustable Voltage with ±1.5% Reference Accuracy
1μA Shutdown Current (Typical)
Fixed 2.35MHz Switching Frequency
100% Duty-Cycle Capable
PFM Mode for High Efficiency at Light Load
Cycle-by-Cycle Current Limit Protection
Hiccup Mode Short-Circuit Protection
Power Good Indicator
Thermal Shutdown
Compact DFN2×2-8 Package
AEC-Q100 Qualified for Automotive Applications

The SY2A23002B high efficiency 2.35MHz synchronous buck converter operates over an input voltage range of 2.8V to 5.5V and can deliver an output current up to 2A. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss. The 2.35MHz constant switching frequency reduces the required external inductor and capacitor values.

The SY2A23002B uses a peak current mode control architecture. It operates in fixed frequency pulse width modulation (PWM) mode at medium to heavy loads, and in pulse frequency modulation (PFM) mode during light loads, thereby maintaining high efficiency over the entire load current range. It also provides cycle-by-cycle current limit protection, output short-circuit protection, and overtemperature protection.

The SY2A23002B is available in a compact DFN2x2-8 package.