| Part number | SY20019ARC |
|---|---|
| Channel(#) | 1 |
| Vin (min) (V) | 2.5 |
| Vin (max) (V) | 5.5 |
| Switching frequency (min)(kHz) | 1500 |
| Switching frequency (max)(kHz) | 1500 |
| Vout (min) (V) | 0.6 |
| 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 OFF+Ipeak |
| Duty cycle (max)(%) | 100 |
| Operation mode | Auto PFM |
| Iq (typ) (uA) | 55 |
| Features | Power good, Output discharge |
| Package | SOT563 |
| Operating temperature range(°C) | -40 to 125 |
| Functional safety category |
The SY20019 high-efficiency 1.5MHz 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 1A. It integrates a main switch and a synchronous switch with very low RDS(ON) to minimize conduction loss. The 1.5MHz pseudoconstant switching frequency allows for small external inductor and capacitor values.
The SY20019 uses constant-off-time and peak-current-mode control to achieve fast transient responses. It provides overcurrent and short-circuit protection.
The SY20019 is available in a space-saving, low-profile SOT563 package.
Photo of evaluation board
Photo of evaluation board
The EVB_SY20019ARC is intended for evaluating 1.5 MHz, 1A, 2.5~5.5V input, 1.8V output synchronous Buck regulator. It features enable control.
| Title | Date |
|---|---|
| Automotive_Solutions_Q1_2026 | 2026-02-09 |
| Silergy_Catalog_Q1_2026 | 2026-02-09 |
| SOT563 | 2021-09-27 |
