LTC3025 300mA 微功率 VLDO 线性稳压器
LTC®3025 是一款微功率、VLDOTM (非常低压差) 线性稳压器，可在输入电压低至 0.9V 的情况下正常运作。该器件能够提供 300mA 的输出电流和一个仅 45mV 的典型压差电压。需要一个 BIAS 电源来运行内部基准和 LDO 电路，而输出电流则直接来自 IN 电源，旨在实现高效调节。0.4V 的低内部基准电压使得能够把 LTC3025 输出设置为远远低于常见 LDO 所能提供的电压 (范围为 0.4V 至 3.6V)。输出电压利用两个超小的 SMD 电阻器来设置。
LTC3025 的低静态电流使其成为电池供电型系统的理想选择。对于三节镍氢电池 (NiMH) 和单节锂离子电池应用，BIAS 电压能够直接由电池来提供，而输入则可取自一个高效率降压型稳压器，从而提供了一个高效率、低噪声输出。
该器件的其他特点包括高输出电压准确度、超卓的瞬态响应、稳定性 (当采用小至 1μF 的超低 ESR 陶瓷电容器)、短路和热过载保护以及输出电流限制功能。LTC3025 采用纤巧、扁平 (高度仅 0.75mm) 的 6 引脚 DFN (2mm x 2mm) 封装。
产品特点 Features
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LTC3025 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LTC3025EDC | DFN | 6 | E | $1.77 | |
| LTC3025EDC#PBF | DFN | 6 | E | $1.77 | |
| LTC3025EDC#TR | DFN | 6 | E | $1.77 | $1.24 |
| LTC3025EDC#TRM | DFN | 6 | E | $1.77 | $1.28 |
| LTC3025EDC#TRMPBF | DFN | 6 | E | $1.77 | $1.28 |
| LTC3025EDC#TRPBF | DFN | 6 | E | $1.77 | $1.24 |
| LTC3025EDC-1 | DFN | 6 | E | $1.97 | |
| LTC3025EDC-1#PBF | DFN | 6 | E | $1.97 | |
| LTC3025EDC-1#TR | DFN | 6 | E | $1.97 | $1.38 |
| LTC3025EDC-1#TRM | DFN | 6 | E | $1.97 | $1.43 |
| LTC3025EDC-1#TRMPBF | DFN | 6 | E | $1.97 | $1.43 |
| LTC3025EDC-1#TRPBF | DFN | 6 | E | $1.97 | $1.38 |
| LTC3025EDC-2 | DFN | 6 | E | $1.97 | |
| LTC3025EDC-2#PBF | DFN | 6 | E | $1.97 | |
| LTC3025EDC-2#TR | DFN | 6 | E | $1.97 | $1.38 |
| LTC3025EDC-2#TRM | DFN | 6 | E | $1.97 | $1.43 |
| LTC3025EDC-2#TRMPBF | DFN | 6 | E | $1.97 | $1.43 |
| LTC3025EDC-2#TRPBF | DFN | 6 | E | $1.97 | $1.38 |
| LTC3025EDC-3#PBF | DFN | 6 | E | $1.97 | |
| LTC3025EDC-3#TRMPBF | DFN | 6 | E | $1.97 | $1.43 |
| LTC3025EDC-3#TRPBF | DFN | 6 | E | $1.97 | $1.38 |
| LTC3025EDC-4#PBF | DFN | 6 | E | $1.97 | |
| LTC3025EDC-4#TRMPBF | DFN | 6 | E | $1.97 | $1.43 |
| LTC3025EDC-4#TRPBF | DFN | 6 | E | $1.97 | $1.38 |
| LTC3025IDC#PBF | DFN | 6 | I | $1.94 | |
| LTC3025IDC#TRMPBF | DFN | 6 | I | $1.94 | $1.41 |
| LTC3025IDC#TRPBF | DFN | 6 | I | $1.94 | $1.36 |
| LTC3025IDC-1#PBF | DFN | 6 | I | $2.17 | |
| LTC3025IDC-1#TRMPBF | DFN | 6 | I | $2.17 | $1.57 |
| LTC3025IDC-1#TRPBF | DFN | 6 | I | $2.17 | $1.52 |
| LTC3025IDC-2#PBF | DFN | 6 | I | $2.17 | |
| LTC3025IDC-2#TRM | DFN | 6 | I | $2.17 | $1.57 |
| LTC3025IDC-2#TRMPBF | DFN | 6 | I | $2.17 | $1.57 |
| LTC3025IDC-2#TRPBF | DFN | 6 | I | $2.17 | $1.52 |
| LTC3025IDC-3#PBF | DFN | 6 | I | $2.17 | |
| LTC3025IDC-3#TRMPBF | DFN | 6 | I | $2.17 | $1.57 |
| LTC3025IDC-3#TRPBF | DFN | 6 | I | $2.17 | $1.52 |
| LTC3025IDC-4#PBF | DFN | 6 | I | $2.17 | |
| LTC3025IDC-4#TRMPBF | DFN | 6 | I | $2.17 | $1.57 |
| LTC3025IDC-4#TRPBF | DFN | 6 | I | $2.17 | $1.52 |
演示电路板
| 器件型号 | 描述 |
| DC741A | LTC3025EDC | VLDO linear Regulator, 0.9 to 5.5Vin, Jumper Selectable 0.8,1.2, 1.5,1.8 Vout @ 300mA |
LTC3025 数据手册及相关资料下载
- 数据手册(英文) : LTC3025 - 300mA Micropower VLDO linear Regulator.PDF
- 可靠性数据 : R415 Reliability Data .PDF
