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TPS62745是一款高效超低功耗同步降压转换器，针对低功耗无线应用进行了优化。其提供的稳压输出消耗400nA的静态电流。该器件由两节可再充电的锂离子电池（锂电池主要化学成分为Li-SOCl2，Li-SO2，Li-MnO2）或者四到六节碱性电池供电。该器件的输入电压范围高达10V，因此也可以通过USB端口和薄膜太阳能模块供电。输出电压通过四个VSEL引脚设置，TPS62745的电压范围为1.8V至3.3V; TPS627451的电压范围为1.3V至2.8V。 VPS_SW。此开关专用于外部分压器，按比例降低外部ADC的输入电压。当电源电压低于欠压锁定阈值时，此开关会自动断开.TPS62745采用小型12引脚3mm×2mm WSON封装。
| Vin (Min) (V) |
| Vin (Max) (V) |
| Vout (Min) (V) |
| Vout (Max) (V) |
| Iout (Max) (A) |
| Regulated Outputs (#) |
| Switching Frequency (Min) (kHz) |
| Switching Frequency (Max) (kHz) |
| Iq (Typ) (mA) |
| Features |
| Control Mode |
| Duty Cycle (Max) (%) |
| Operating Temperature Range (C) |
| Rating |
| Package Group |
| TPS62745 | TPS62125 | TPS62175 | TPS62230 | TPS62671 | TPS62740 | TPS62742 | TPS62746 | TPS62748 | TPS62821 |
|---|---|---|---|---|---|---|---|---|---|
| 3.3 | 3 | 4.7 | 2.05 | 2.3 | 2.2 | 3 | 2 | 2.15 | 2.4 |
| 10 | 17 | 28 | 6 | 4.8 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| 1.8 | 1.2 | 1 | 2.5 | 1.8 | 1.8 | 1.8 | 1.2 | 1.2 | 0.6 |
| 3.3 | 10 | 6 | 2.5 | 1.8 | 3.3 | 3.3 | 3.3 | 1.8 | 4 |
| 0.3 | 0.3 | 0.5 | 0.5 | 0.5 | 0.3 | 0.4 | 0.3 | 0.3 | 1 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 2500 | 1000 | 1000 | 2000 | 5400 | 2000 | 2000 | 1200 | 1200 | 2200 |
| 2500 | 1000 | 1000 | 3000 | 6600 | 2000 | 2000 | 1200 | 1200 | 2200 |
| 0.0004 | 0.013 | 0.0048 | 0.022 | 0.017 | 0.0003 | 0.0003 | 0.0003 | 0.00036 | 0.004 |
| Dynamic Voltage Scaling Enable Light Load Efficiency Output Discharge Synchronous Rectification | Enable Light Load Efficiency Output Discharge Power Good Synchronous Rectification UVLO Adjustable | Enable Light Load Efficiency Output Discharge Power Good Synchronous Rectification | Enable Forced Pulse Width Modulation (FPWM) Mode Light Load Efficiency Synchronous Rectification | Enable Forced Pulse Width Modulation (FPWM) Mode Light Load Efficiency Spread Spectrum Synchronous Rectification | Dynamic Voltage Scaling Enable Light Load Efficiency Output Discharge Synchronous Rectification | Dynamic Voltage Scaling Light Load Efficiency Output Discharge Power Good Synchronous Rectification | Dynamic Voltage Scaling Enable Light Load Efficiency Output Discharge Synchronous Rectification | Load Disconnect | Enable Light Load Efficiency Output Discharge Over Current Protection Power Good Pre-Bias Start-Up Synchronous Rectification |
| Constant on-time (COT) DCS-Control | Constant on-time (COT) DCS-Control | Constant on-time (COT) DCS-Control | Constant on-time (COT) DCS-Control | Voltage Mode | Constant on-time (COT) DCS-Control | Constant on-time (COT) DCS-Control | Constant on-time (COT) DCS-Control | Constant on-time (COT) DCS-Control | Constant on-time (COT) DCS-Control |
| 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| -40 to 125 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 125 |
| Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| WSON | WSON | WSON | SON | DSBGA | WSON | WSON | DSBGA | DSBGA | VSON-HR |
型号：TPS62745DSSR 封装：WSON12_3X2MM_EP
品牌：TI 描述：具有 VSEL 和输入电压开关的 3.3V 至 10V 输入、300mA 超低 Iq 降压转换器
金额：￥1.61699
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