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数据： 具有 Eco-mode™ 的 TPS54340 42V 输入、3.5A 降压直流/直流转换器 数据表 (Rev. D)
TPS54340是一款42V，3.5A，降压稳压器，此稳压器具有一个集成的高侧MOSFET。按照ISO 7637标准，此器件能够耐受高达45V的抛负载脉冲。电流模式控制提供了简单的外部补偿和灵活的组件选择。一个低纹波脉冲跳跃模式将无负载时的电源电流减小至146μA。当启用引脚被拉至低电平时，关断电源电流被减少至1μA。
欠压闭锁在内部设定为4.3V，但可用使能引脚将之提高。输出电压启动斜升由内部控制以提供一个受控的启动并且消除过冲。
宽开关频率范围可实现对效率或者外部组件尺寸的优化。频率折返和热关断在过载条件下保护内部和外部组件。
TPS54340可提供8引脚热增强型HSOP PowerPAD™封装。
Al l商标是其各自所有者的财产。
| 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 |
| TPS54340 | LM43603 | LMR14030 | LMR23630 | TPS54040A | TPS54140A | TPS54240 | TPS5430 | TPS54341 | TPS54540 | TPS54541 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4.5 | 3.5 | 4 | 4.5 | 3.5 | 3.5 | 3.5 | 5.5 | 4.5 | 4.5 | 4.5 |
| 42 | 36 | 40 | 36 | 42 | 42 | 42 | 36 | 42 | 42 | 42 |
| 0.8 | 1 | 1 | 1 | 0.8 | 0.8 | 0.8 | 1.23 | 0.8 | 0.8 | 0.8 |
| 41 | 28 | 36 | 30 | 39 | 39 | 39 | 31 | 41 | 41.1 | 41 |
| 3.5 | 3 | 3.5 | 3 | 0.5 | 1.5 | 2.5 | 3 | 3.5 | 5 | 5 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 100 | 200 | 200 | 200 | 100 | 100 | 100 | 500 | 100 | 100 | 100 |
| 2500 | 2200 | 2500 | 2200 | 2500 | 2500 | 2500 | 500 | 2500 | 2500 | 2500 |
| 0.146 | 0.027 | 0.04 | 0.075 | 0.116 | 0.116 | 0.138 | 3 | 0.152 | 0.146 | 0.152 |
| Enable Frequency Synchronization Light Load Efficiency UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Power Good Synchronous Rectification Tracking | Enable Frequency Synchronization Light Load Efficiency Power Good Pre-Bias Start-Up Tracking UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Pre-Bias Start-Up Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable | Enable | Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Power Good Tracking UVLO Adjustable |
| Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Voltage Mode | Current Mode | Current Mode | Current Mode |
| 98 | 99 | 98 | 97 | 98 | 98 | 98 | 87 | 98 | 98 | 98 |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 125 | -40 to 85 |
| Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| SO PowerPAD | HTSSOP SON | SO PowerPAD | SO PowerPAD SON | MSOP-PowerPAD VSON | MSOP-PowerPAD VSON | MSOP-PowerPAD VSON | SO PowerPAD | WSON | SO PowerPAD | WSON |
金额：￥3.02614
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金额：￥35.43680
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型号：TPS54340BQDDARQ1 封装：SOIC8_150MIL_EP
品牌：TI 描述：DC-DC电源芯片 Vi=4.5~42V Vo=0.8~58.8V Io=3.5A SOIC8_150MIL_EP
金额：￥41.90040
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