High Efficiency, 1.5MHz 5.5V/1A Synchronous Step Down Regulator
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- Parameters
- Features
- Description
| Part number |
SY20019ARC |
| Channel(#) |
1 |
| Vin (min) (V) |
2.5 |
| Vin (max) (V) |
5.5 |
| Switching frequency (min)(kHz) |
1500 |
| Switching frequency (max)(kHz) |
1500 |
| Vout (min) (V) |
0.6 |
| Vout (max) (V) |
5 |
| Iout (max) (A) |
1 |
| 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) |
55 |
| 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
- 55μA Low Quiescent Current
- Low RDS(ON) for Internal Switches (Top/Bottom): 170mΩ /100mΩ
- High Switching Frequency 1.5MHz Minimizes the External Components
- Internal Soft-start Limits the Inrush Current
- 100% Dropout Operation
- Power Good Indicator
- Hic-cup for Short Circuit Protection
- Output Auto Discharge Function
- RoHS Compliant and Halogen Free
- Compact Package: SOT563
The SY20019 high-efficiency 1.5MHz 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 1A. It integrates a main switch and a synchronous switch with very low RDS(ON) to minimize conduction loss. The 1.5MHz pseudoconstant switching frequency allows for small external inductor and capacitor values.
The SY20019 uses constant-off-time and peak-current-mode control to achieve fast transient responses. It provides overcurrent and short-circuit protection.
The SY20019 is available in a space-saving, low-profile SOT563 package.
Evaluation Board
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Photo of evaluation board
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Photo of evaluation board
The EVB_SY20019ARC is intended for evaluating 1.5 MHz, 1A, 2.5~5.5V input, 1.8V output synchronous Buck regulator. It features enable control.
