| Part number | SY21213ABT |
|---|---|
| Channel(#) | 1 |
| Vin (min) (V) | 4.5 |
| Vin (max) (V) | 30 |
| Switching frequency (min)(kHz) | 600 |
| Switching frequency (max)(kHz) | 600 |
| Vout (min) (V) | 0.6 |
| Vout (max) (V) | 12.5 |
| Iout (max) (A) | 2 |
| Vout2 (min)(V) | |
| Vout2 (max )(V) | |
| Iout2 (max)(A) | |
| Vref accuracy (±%) | 1(over temperature) |
| Vout accuracy(±%) | |
| Control mode | COT+Ripple |
| Duty cycle (max)(%) | 75 |
| Operation mode | Auto PFM |
| Iq (typ) (uA) | 250 |
| Features | |
| Package | SOT23-6 |
| Operating temperature range(°C) | -40 to 125 |
| Functional safety category |
The SY21213 high efficiency 600kHz synchronous buck converter operates over a wide input voltage range of 4.5V to 30V, and can deliver an output current up to 2A. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss. The 600kHz pseudo-constant switching frequency enables using small external inductor and capacitor values.
The SY21213 uses advanced constant on-time and ripple-based control strategy to achieve fast transient response for applications with high step-down ratios, and high efficiency at light loads. It also provides cycle-bycycle current limit protection, output under voltage protection and over temperature protection.
Only the input and output capacitors, inductor, feedback resistor divider and feedforward capacitor need to be selected for the targeted application specifications.
The SY21213 is available in a compact SOT23-6 package.
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
The EVB_SY21213ABT is intended for evaluating 2A, 30V, 600kHz synchronous buck converter.
| Title | Date |
|---|---|
| Automotive Solutions Q4 2025 | 2025-12-02 |
| Consumer Selection Guide Q4 2025 | 2025-12-02 |
| Industrial Designs Q4 2025 | 2025-12-02 |
