SY20111
SY20111 is 1A Synchronous Step Down Regulator manufactured by Silergy.
Description
SY20111 is a high efficiency 2.5MHz synchronous step down DC/DC regulator IC capable of delivering up to 1A output currents. It can operate over a wide input voltage range from 2.5V to 5.5V and integrate main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss.
Ordering Information
SY20111- (-
- )- Tempera ture Code Pa cka ge Code Optional Spec Code
Ordering Number Package Type Note
SY20111DQC
DFN1.5×1.5-6 1A
Features
- Low RDS(ON) for internal switches (top/bottom) 230mΩ/150mΩ
- 2.5~5.5V input voltage range
- High switching frequency 2.5MHz minimizes the external ponents
- Internal soft-start limits the inrush current
- 100% dropout operation
- Ro HS pliant and Halogen Free
- Output auto discharge function
- pact package: DFN1.5x1.5-6
Applications
- Portable Navigation Device
- Set Top Box
- USB Dongle
- Media Player
- Smart phone
Typical Applications
VIN 2.5~5.5V
CIN 10u F
ON/ OFF
EN SGND
L1 1.0u H LX
VOUT 1.2V
R1
C1
100k 10p F
COUT 4.7u F
PGND
R2 100k
Figure1. Schematic Diagram
Efficiency...
