High Efficiency, 1.5MHz 5.5V/1A Synchronous Step Down Regulator
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- Parameters
- Features
- Description
| Part Number | SY20019ARC |
|---|
| Vin_min (V) | 2.5 |
|---|
| Vin_max (V) | 5.5 |
|---|
| Io_max (A) | 1 |
|---|
| Channels | |
|---|
| Vo_min (V) | 0.6 |
|---|
| Fsw (MHz) | 1.5 |
|---|
| Vref (V) | |
|---|
| Vref Accuracy | ±1.5% |
|---|
| Iq (uA) | 55 |
|---|
| Rdson1 | 170 |
|---|
| Rdson2 | 100 |
|---|
| Soft Start | 0.75 |
|---|
| Package | SOT563 |
|---|
| Topology | |
|---|
| Protection Mode | Hic-cup SCP |
|---|
| Features / Special Function | Power Good Indicator,Auto-Discharge,100% Dropout Operation |
|---|
| Temp Range | |
|---|
- 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
Photo of evaluation board
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.
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