Description
SY8003/SY8003A High Efficiency 5.5V, 3A continuous, 1MHz Synchronous Step Down Regulator General .
The SY8003 and SY8003A are high-efficiency, high frequency synchronous step-down DC-DC regulator IC capable of delivering up to 3A output current.
Features
* Low RDS(ON) for internal switches (top/bottom):110mΩ/80mΩ
* 3A continuous load current capability
* 2.7-5.5V input voltage range
* High switching frequency minimizes the external
components: 1MHz
* Internal softstart limits the inrush current
* Reliable short circuit protec
Applications
* LCD TV
* Set Top Box
* Net PC
* Mini-Notebook PC
* Access Point Router
Typical Applications
VIN: 2.7-5.5V
2
3
IN
PG LX
6 L1:2.2µ H
VOUT: 1.8V
ON/ OFF
CIN 22μF
7 EN
FB 1
PGND SGND
4
8
R1 200k
C1
COUT
22pF 22μFх2
R2 100k
Figure 1.Schematic diagram
Efficiency
