High Efficiency, Fast Response, 15A, 25V Input, Fixed 5.15V Output Synchronous Buck Converter
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- Parameters
- Features
- Description
| Part number |
SY83015CWUQ |
| Channel(#) |
1 |
| Vin (min) (V) |
5.5 |
| Vin (max) (V) |
25 |
| Switching frequency (min)(kHz) |
|
| Switching frequency (max)(kHz) |
600 |
| Vout (min) (V) |
|
| Vout (max) (V) |
5.15 |
| Iout (max) (A) |
15 |
| Vout2 (min)(V) |
|
| Vout2 (max )(V) |
|
| Iout2 (max)(A) |
|
| Vref accuracy (±%) |
±1% |
| Vout accuracy(±%) |
±1% |
| Control mode |
COT+Ripple |
| Duty cycle (max)(%) |
99% |
| Operation mode |
PFM/PFM+/USM Selectable |
| Iq (typ) (uA) |
|
| Features |
|
| Package |
|
| Operating temperature range(°C) |
-40°C to 125°C |
| Functional safety category |
|
- Low RDS(ON) for Internal MOSFETs: 7mΩ Top, 3.7mΩ Bottom
- Wide Input Voltage Range: 5.5V ~ 25V
- Fixed 5.15V Output Voltage
- Support 99% Duty Cycle Using On-time Stretch
- Integrated Bypass Switch: Smaller than 1.5Ω
- 15A Continuous Output Current Capability
- 600kHz Pseudo-Constant Frequency
- ±1% Output Voltage Accuracy under TJ = -40°C ~125°C
- Internal 0.8ms Soft-Start Limits the Inrush Current
- Support Smooth Startup with Pre-Biased Output
- Advanced Constant On-Time and Ripple-Based Control to Achieve Fast Transient Responses
- PFM/PFM+/USM Selectable Light Load Operation Mode
- Power Good Indicator
- Output Auto-Discharge Function
- Programmble Valley and Peak Current Limit Threshold by ILMT Pin
- Cycle-by-Cycle Valley and Peak Current Limit Protection
- Latch-Off Mode Output Over Voltage Protection
- Latch-Off Mode Output Under Voltage Protection
- Latch-Off Mode Over Temperature Protection
- Input Under Voltage Lockout (UVLO)
- RoHS Compliant and Halogen Free
- Compact Package: QFN3×4-28
- Moisture Sensitivity Level (MSL): 3
The SY83015C is a high efficiency synchronous buck converter operating over a wide input voltage range of 5.5V to 25V and capable of delivering up to 15A current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. In addition, it operates at pseudo-constant frequency of 600kHz under heavy load conditions to minimize the size of inductor and capacitor. The 3.3V VCC can switch over to BYP input (external 3.3V voltage source) to save power loss.
