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数据： LM5009 Wide Input, 100-V,150-mA, Step-Down Switching Regulator 数据表
LM5009降压型开关稳压器具有实现低成本，高效率，降压偏置稳压器所需的所有功能。该器件能够从9.5 V至95 V输入源驱动150 mA负载电流。开关频率可超过600 kHz，具体取决于输入和输出电压。输出电压可设置为2.5 V至85 V.该高压稳压器包含一个N通道降压开关和一个内部启动稳压器。该器件易于实现，采用8引脚VSSOP和热增强型8引脚WSON封装。 LM5009是高压单片或分立线性解决方案的理想替代品，其功率损耗变得不可接受。调节器操作基于使用与VIN成反比的导通时间的控制方案。此功能允许工作频率在负载和输入电压变化时保持相对恒定。控制方案不需要环路补偿，从而产生超快的瞬态响应。利用与V OUT 成反比的强制关断时间实现智能电流限制。该方案可确保短路保护并提供最小的折返。其他功能包括热关断，V CC 欠压锁定，栅极驱动欠压锁定和最大占空比限制。
| 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 |
| LM5009 | LM25011-Q1 | LM25019 | LM5009A | LM5165 | LM5165-Q1 | TPS54061 | TPS54061-Q1 | TPS54062 |
|---|---|---|---|---|---|---|---|---|
| 9.5 | 6 | 7.5 | 6 | 3 | 3 | 4.7 | 4.7 | 4.7 |
| 95 | 42 | 48 | 95 | 65 | 65 | 60 | 60 | 60 |
| 2.5 | 2.51 | 1.25 | 2.5 | 1.23 | 1.23 | 0.8 | 0.8 | 0.8 |
| 85 | 40 | 40 | 85 | 65 | 65 | 58 | 58 | 58 |
| 0.15 | 2 | 0.1 | 0.15 | 0.15 | 0.15 | 0.2 | 0.2 | 0.05 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 100 |
| 600 | 2000 | 1000 | 600 | 600 | 600 | 1100 | 1100 | 400 |
| 0.485 | 1.2 | 1.75 | 0.485 | 0.01 | 0.01 | 0.09 | 0.09 | 0.089 |
| Enable | Adjustable Current Limit | Synchronous Rectification UVLO Adjustable | Enable | Adjustable Current Limit Enable Light Load Efficiency Power Good Pre-Bias Start-Up Synchronous Rectification UVLO Adjustable | Adjustable Current Limit Enable Light Load Efficiency Power Good Pre-Bias Start-Up Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency Synchronous Rectification UVLO Adjustable |
| Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Constant on-time (COT) | Current Mode | Current Mode | Current Mode |
| 99 | 99 | 90 | 99 | 100 | 100 | 98 | 98 | 98 |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 150 | -40 to 150 | -40 to 150 | -40 to 150 | -40 to 125 |
| Catalog | Automotive | Catalog | Catalog | Catalog | Automotive | Catalog | Automotive | Catalog |
| VSSOP WSON | MSOP-PowerPAD | SO PowerPAD WSON | VSSOP WSON | VSON | VSON | SON | SON | SON VSSOP |
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