SY20121
SY20121 is 1.5A Synchronous Step Down Regulator manufactured by Silergy.
Description
SY20121 is a high efficiency 2.0MHz synchronous step down DC/DC regulator capable of delivering up to 1.5A output currents. It can operate over a wide input voltage range from 2.6V to 5.5V and integrate main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss.
Low output voltage ripple, small external inductor and capacitor sizes are achieved with 2.0MHz switching frequency.
Ordering Information
- (-
- )- Temperature Code Pa cka ge Code Optional Spec Code
Ordering Number SY20121ARC
Package Type Note
SOT563
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Features
- 2.6~5.5V Input Voltage Range
- 55µA Low Quiescent Current
- Ultra Fast Load Transient Speed
- Low RDS(ON) for Internal Switches
(Top/Bottom) 180mΩ /100mΩ
- High Switching Frequency 2.0MHz Minimizes the External ponents
- Internal Soft-start Limits the Inrush Current
- Output Auto Discharge Function
- Ro HS pliant and Halogen Free
- pact Package: SOT563
Applications
- Smart Phone
- Net PC
- Mini-notebook PC
- Access Point Router
Typical Application
VIN : 2.6V~5.5V
CIN 10µF/6.3V
6 IN
L：1.0µH LX 2
5 EN
4 OUT
3 FB
GND 1
RH: 100k
RL: 49.9k
VOUT:1.8V
COUT 22µF/6.3V
Figure1. Schematic...
