LT1129 - 具停机功能的微功率低压差稳压器
LT®1129 / LT1129-3.3 / LT1129-5 是具停机功能的微功率低压差稳压器。这些器件能够在压差电压为 400mV 的条件下 (在最大输出) 提供 700mA 的输出电流。它们专为在电池供电型系统中使用而设计，低静态电流 (在工作期间为 50μA，而在停机模式中则为 16μA) 使其成为一种理想的选择。在压差条件下，静态电流不会上升，这与许多其他的低压差 PNP 稳压器是不同的。 LT1129 / LT1129-3.3 / LT1129-5 的其他特点包括在采用小输出电容器的情况下能正常运作。它们可在输出端上采用仅 3.3μF 的电容器时保持稳定，而大多数老式器件则需要采用 10μF 至 100μF 的输出电容器来实现稳定。另外，输入可以连接至地或一个反向电压，而不会产生从输出端流至输入端的反向电流。这使得 LT1129 / LT1129-3.3 / LT1129-5 非常适合于备用电源场合，在这些场合中，输出被保持于高电平和输入处于地电位或被反向。在这些条件下，从输出引脚流至地的电流将仅为 16μA。这些器件采用 5 引脚 TO-220、5 引脚 DD-Pak 和 3 引脚 SOT-223 封装。
特点
典型应用  | 应用
封装信息      |
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
|---|---|---|---|---|
| LT1129CQ-3.3#PBF | DDPAK-5 | C | $3.08 | $2.45 |
| LT1129CQ-3.3#TRPBF | DDPAK-5 | C | $2.57 | |
| LT1129CQ-5#PBF | DDPAK-5 | C | $3.08 | $2.45 |
| LT1129CQ-5#TRPBF | DDPAK-5 | C | $2.57 | |
| LT1129CQ#PBF | DDPAK-5 | C | $3.08 | $2.45 |
| LT1129CQ#TRPBF | DDPAK-5 | C | $2.57 | |
| LT1129CS8-3.3#PBF | SO-8 | C | $3.17 | $2.50 |
| LT1129CS8-3.3#TRPBF | SO-8 | C | $2.56 | |
| LT1129CS8-5#PBF | SO-8 | C | $3.17 | $2.50 |
| LT1129CS8-5#TRPBF | SO-8 | C | $2.56 | |
| LT1129CS8#PBF | SO-8 | C | $3.17 | $2.50 |
| LT1129CS8#TRPBF | SO-8 | C | $2.56 | |
| LT1129CST-3.3#PBF | SOT-223 | C | $2.83 | $2.30 |
| LT1129CST-3.3#TRPBF | SOT-223 | C | $2.36 | |
| LT1129CST-5#PBF | SOT-223 | C | $2.83 | $2.30 |
| LT1129CST-5#TRPBF | SOT-223 | C | $2.36 | |
| LT1129CT-3.3#06PBF | TO-220 | C | $2.67 | $2.15 |
| LT1129CT-3.3#PBF | TO-220 | C | $2.67 | $2.15 |
| LT1129CT-5#06PBF | TO-220 | C | $2.67 | $2.15 |
| LT1129CT-5#PBF | TO-220 | C | $2.67 | $2.15 |
| LT1129CT#PBF | TO-220 | C | $2.67 | $2.15 |
| LT1129IQ-3.3#PBF | DDPAK-5 | I | $3.67 | $2.95 |
| LT1129IQ-3.3#TRPBF | DDPAK-5 | I | $3.07 | |
| LT1129IQ-5#PBF | DDPAK-5 | I | $3.67 | $2.95 |
| LT1129IQ-5#TRPBF | DDPAK-5 | I | $3.07 | |
| LT1129IQ#PBF | DDPAK-5 | I | $3.67 | $2.95 |
| LT1129IQ#TRPBF | DDPAK-5 | I | $3.07 | |
| LT1129IS8-3.3#PBF | SO-8 | I | $3.75 | $2.95 |
| LT1129IS8-3.3#TRPBF | SO-8 | I | $3.01 | |
| LT1129IS8-5#PBF | SO-8 | I | $3.75 | $2.95 |
| LT1129IS8-5#TRPBF | SO-8 | I | $3.01 | |
| LT1129IS8#PBF | SO-8 | I | $3.75 | $2.95 |
| LT1129IS8#TRPBF | SO-8 | I | $3.01 | |
| LT1129IST-3.3#PBF | SOT-223 | I | $3.17 | $2.60 |
| LT1129IST-3.3#TRPBF | SOT-223 | I | $2.66 | |
| LT1129IST-5#PBF | SOT-223 | I | $3.17 | $2.60 |
| LT1129IST-5#TRPBF | SOT-223 | I | $2.66 | |
| LT1129IT-3.3#PBF | TO-220 | I | $3.17 | $2.60 |
| LT1129IT-5#06PBF | TO-220 | I | $3.17 | $2.60 |
| LT1129IT-5#PBF | TO-220 | I | $3.17 | $2.60 |
| LT1129IT#06PBF | TO-220 | I | $3.17 | $2.60 |
| LT1129IT#PBF | TO-220 | I | $3.17 | $2.60 |
| LT1129MPST-3.3 | SOT-223 | MP | $10.03 | $7.02 |
| LT1129MPST-3.3#PBF | SOT-223 | MP | $10.03 | $7.02 |
| LT1129MPST-3.3#TR | SOT-223 | MP | $7.08 | |
| LT1129MPST-3.3#TRPBF | SOT-223 | MP | $7.08 |
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