The SY21102 high efficiency asynchronous Buck converter can deliver 2A output current over a wide input voltage range from 5V to 40V. The SY21102 employs a constant off-time and peak current mode control strategy to achieve fast transient responses. It integrates a power MOSFET with low RDS(ON) to minimize conduction loss. The 800kHz switching frequency permits low output voltage ripple and reduces external inductor and capacitor sizes. The SY21102 also provides cycle-by-cycle current limit protection, over temperature protection, and output short circuit protection. The SY21102 is available in a compact SOT23-6 package.
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技术参数
| 电源 | |
|---|---|
| Channel(#) | 1 |
| 交流 / 直流特性 | |
| Switching frequency (max)(kHz) | 800 |
| Switching frequency (min)(kHz) | 800 |
| Vref accuracy (±%) | 2 |
| 环境与封装 | |
| Operating temperature range(°C) | -40 to 125 |
| Package | SOT23-6 |
| 其他 | |
| Control mode | COT OFF+Ipeak |
| Duty cycle (max)(%) | 80 |
| Features | Asynchronous |
| Iout (max) (A) | 2 |
| Iq (typ) (uA) | 160 |
| Operation mode | Auto PFM |
| Vin (max) (V) | 40 |
| Vin (min) (V) | 5 |
| Vout (max) (V) | 12 |
| Vout (min) (V) | 0.6 |