High Efficiency, 1.2MHz, 3A Buck
![]()
- Parameters
- Features
- Description
| Part number |
SY20112ARC |
| Channel(#) |
1 |
| Vin (min) (V) |
2.5 |
| Vin (max) (V) |
5.5 |
| Switching frequency (min)(kHz) |
1200 |
| Switching frequency (max)(kHz) |
1200 |
| Vout (min) (V) |
0.6 |
| Vout (max) (V) |
5 |
| Iout (max) (A) |
3 |
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
1.5 |
| Vout accuracy(±%) |
|
| Control mode |
COT OFF+Ipeak |
| Duty cycle (max)(%) |
100 |
| Operation mode |
Auto PFM |
| Iq (typ) (uA) |
50 |
| Features |
Power good, Output discharge |
| Package |
SOT563 |
| Operating temperature range(°C) |
-40 to 125 |
| Functional safety category |
|
- 2.5V to 5.5V Input Voltage Range
- 50μA Low Quiescent Current
- Low RDS(ON) for Internal Switches (Top/Bottom) 100mΩ /60mΩ
- High Switching Frequency 1.2MHz Minimizes the External Components
- Internal Soft-start Limits the Inrush Current
- 100% Dropout Operation
- Hic-cup for Short Circuit Protection
- Output Auto Discharge Function
- RoHS Compliant and Halogen Free
- Compact Package: SOT563
The SY20112 high-efficiency 1.2MHz synchronous step-down DC/DC regulator operates over a wide input voltage range of 2.5V to 5.5V and can deliver an output current up to 3A with a low quiescent current of 50µA. To minimize conduction loss, it integrates a main switch and a synchronous switch with very low RDS(ON).
The SY20112 adopts constant off-time and peak current mode control. The SY20112 is highly integrated, so only the input and output capacitors, inductor, and resistor-divider components need to be selected for the targeted application specifications.
The SY20112 is available in a space-saving, low-profile SOT563 package.
Evaluation Board
-
Photo of evaluation board
-
Photo of evaluation board
-
Photo of evaluation board
-
Photo of evaluation board
The EVB_SY20112ARC is intended for evaluating 1.2 MHz, 3A, 2.5~5.5V input, 1.8V output synchronous Buck regulator. It features enable control.
