400nA ultra low IQ, 1.0MHz, 1.0A continuous Synchronous Step Down Regulator
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- Parameters
- Features
- Description
| Part number |
SY20109BDFC |
| Channel(#) |
1 |
| Vin (min) (V) |
2.4 |
| Vin (max) (V) |
6 |
| Switching frequency (min)(kHz) |
1000 |
| Switching frequency (max)(kHz) |
1000 |
| Vout (min) (V) |
1.2 |
| 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+Ripple |
| Duty cycle (max)(%) |
100 |
| Operation mode |
Auto PFM |
| Iq (typ) (uA) |
0.4 |
| Features |
Power good, Output discharge |
| Package |
DFN2×2-8 |
| Operating temperature range(°C) |
-40 to 125 |
| Functional safety category |
|
- 2.4~6.0V Input Voltage Range
- Ultra Low Quiescent Current Down to 400nA
- Low RDS(ON) for the Internal Switches (Top/Bottom) 300mΩ /130mΩ
- Instant PWM Control to Achieve the Ultra Fast Load Transient Speed
- High Switching Frequency 1.0MHz Minimizes the External Components
- Internal Soft-start Limits the Inrush Current
- Power Good Indicator
- Hiccup Mode for Output Short Circuit Protection
- 100% Drop Out Operation
- Output Auto Discharge Function
- RoHS Compliant and Halogen Free
- Compact Package: DFN2×2-8
The SY20109B is a 400nA ultra low quiescent current, 1.0MHz synchronous step down DC/DC regulator, which is capable of delivering up to 1.0A output current. It can operate over a wide input voltage range from 2.4V to 6.0V and integrate a main switch and a synchronous switch with very low RDS(ON) to minimize the conduction loss.
The low output voltage ripple, the small external inductor and the capacitor sizes are achieved at 1.0MHz switching frequency.
Evaluation Board
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Photo of evaluation board
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Photo of evaluation board
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Photo of evaluation board
The EVB_SY20109BDFC is intended for evaluating 1.0MHz, 1.0A, 2.4~6.0V input, 1.8V output synchronous Buck regulator. It features Enable control.
