| Part number | SY21248RAC |
|---|---|
| Channel(#) | |
| Vin (min) (V) | 4 |
| Vin (max) (V) | 23 |
| Switching frequency (min)(kHz) | |
| Switching frequency (max)(kHz) | |
| Vout (min) (V) | 0.6 |
| Vout (max) (V) | |
| Iout (max) (A) | 8 |
| Vout2 (min)(V) | |
| Vout2 (max )(V) | |
| Iout2 (max)(A) | |
| Vref accuracy (±%) | ±1% |
| Vout accuracy(±%) | |
| Control mode | |
| Duty cycle (max)(%) | |
| Operation mode | |
| Iq (typ) (uA) | |
| Features | Power Good Indicator, Output Discharge, Latch-off UVP/OVP |
| Package | QFN3x3-20 |
| Operating temperature range(°C) | |
| Functional safety category |
The SY21248 develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 8A continuous, 16A peak current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. SY21248 also integrates a bypass switch which allows the IC to be powered by external DC source.
The SY21248 operates over a wide input voltage range from 4V to 23V. The DC-DC regulator adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at pseudo-constant frequency of 500kHz under heavy load conditions to minimize the size of inductor and capacitor. SY21248 is optimized for lower than 2.5VOUT application
| Title | Date |
|---|---|
| Silergy_Catalog_Q3_2026 | 2026-11-04 |
| QFN3x3-20 | 2022-05-20 |
