High Efficiency, 1.5MHz, 1A, 5.5V Input Synchronous Buck Converter
- Parameters
- Features
- Description
| Part number |
SY80091ART |
| Channel(#) |
|
| Vin (min) (V) |
|
| Vin (max) (V) |
|
| Switching frequency (min)(kHz) |
|
| Switching frequency (max)(kHz) |
|
| Vout (min) (V) |
|
| Vout (max) (V) |
|
| Iout (max) (A) |
|
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
|
| Vout accuracy(±%) |
|
| Control mode |
|
| Duty cycle (max)(%) |
|
| Operation mode |
|
| Iq (typ) (uA) |
|
| Features |
|
| Package |
|
| Operating temperature range(°C) |
|
| Functional safety category |
|
- Low RDS(ON) for Internal MOSFETs: 170mΩ Top, 100mΩ Bottom
- Wide Input Voltage Range: 2.5V ~ 5.5V
- Up to 1A Output Current
- ±1.5% 0.6V Reference
- PFM Light Load Operation
- Internal Soft-Start Limits the Inrush Current
- 1.5MHz Switching Frequency Minimizes the External Components
- Constant Off-time and Peak Current Mode Control to Achieve Fast Transient Responses
- 100% Dropout Operation
- Output Auto Discharge Function
- Power Good Indicator for SY80091
- Cycle-by-Cycle Peak Current Limit Protection
- Hic-Cup Mode Output Under Voltage Protection
- Auto-Recovery Mode Over Temperature Protection
- Input Under Voltage Lockout (UVLO)
- RoHS-Compliant and Halogen-Free
- Compact Package: SOT563
- Moisture Sensitivity Level (MSL): 1
The SY80091x high efficiency 1.5MHz synchronous buck converter 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 top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss. The 1.5MHz pseudo-constant switching frequency enables using small external inductor and capacitor values.
