High Efficiency, 1MHz, 4A Synchronous Step Down Regulator
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- Parameters
- Features
- Description
| Part number | SY20118ADFC |
|---|
| Channel!(#) | 1 |
|---|
| Vin (min) !(V) | 2.5 |
|---|
| Vin (max) !(V) | 5.5 |
|---|
| Switching frequency (min)!(kHz) | 1000 |
|---|
| Switching frequency (max)!(kHz) | 1000 |
|---|
| Vout (min) !(V) | 0.6 |
|---|
| Vout (max) !(V) | 5 |
|---|
| Iout (max) !(A) | 4 |
|---|
| 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 | DFN2×2-8 |
|---|
| 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): 85mΩ /60mΩ
- High Switching Frequency 1MHz 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: DFN2×2-8
The SY20118A high-efficiency 1MHz 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 4A with a low quiescent current of 55µA. It integrates a main switch and a synchronous switch with very low RDS(ON) to minimize conduction loss. The 1MHz switching frequency allows for low output-voltage ripple, as well as small external inductor and capacitor values.
The SY20118A is highly integrated, so only the input and output capacitors, inductor, and feedback resistors need to be selected for the targeted application specifications.
The SY20118A is available in a compact DFN2×2-8 package.
Evaluation Board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
The EVB_SY20118ADFC is intended for evaluating 1MHz, 4A, 5.5V input synchronous Buck regulator. It features enable control.
