| Part number | SY81586SVD |
|---|---|
| Channel(#) | 1 |
| Vin (min) (V) | 4.5 |
| Vin (max) (V) | 18 |
| Switching frequency (min)(kHz) | |
| Switching frequency (max)(kHz) | 400 |
| Vout (min) (V) | 0.6 |
| Vout (max) (V) | 9.5 |
| Iout (max) (A) | 6 |
| Vout2 (min)(V) | |
| Vout2 (max )(V) | |
| Iout2 (max)(A) | |
| Vref accuracy (±%) | |
| Vout accuracy(±%) | ±1% |
| Control mode | COT+Ripple |
| Duty cycle (max)(%) | |
| Operation mode | PFM |
| Iq (typ) (uA) | 200 |
| Features | Auto-Recovery Protection, Cycle by Cycle Bottom and Peak Current, Output Auto Discharge, MSL1, PFM |
| Package | DFN2.5×1.5-10 |
| Operating temperature range(°C) | -40°C to 125°C |
| Functional safety category |
· Low RDS(ON) for Internal MOSFETs: 29mΩ Top, 19mΩ Bottom
· Wide Input Voltage Range: 4.5V ~ 18V
· Up to 6A Output Current
· ±1% 0.6V Reference
· Pulse-Frequency Modulation (PFM) Mode Operation
· Internal Soft-Start Limits the Inrush Current
· Support Smooth Startup with Pre-Biased Output
· 400kHz Switching Frequency Minimizes the External Components
· Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
· Output Auto-Discharge Function
· Cycle-by-Cycle Valley and 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: DFN2.5×1.5-10
· Moisture Sensitivity Level (MSL): 1
The SY81586 high efficiency synchronous buck converter operates over a wide input voltage range of 4.5V to 18V, and can deliver an output current up to 6A. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss. The 400kHz pseudo-constant switching frequency enables using small external inductor and capacitor values.
| Title | Date |
|---|---|
| Silergy_Catalog_Q2_2026 | 2026-06-12 |
