可提供此产品的更新版本
功能与比较器件相同但引脚有所不同。
TPS7A45
- Optimized for Fast Transient Response
- Output Current: 1.5 A
- High Output Voltage Accuracy: 1% at 25°C
- Dropout Voltage: 300 mV
- Low Noise: 35 µVRMS (10 Hz to 100 kHz)
- High Ripple Rejection: 68 dB at 1 kHz
- 1-mA Quiescent Current
- No Protection Diodes Needed
- Controlled Quiescent Current in Dropout
- Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V
- Adjustable Output from 1.21 V to 20 V (TPS7A4501 Only)
- Less Than 1-µA Quiescent Current in Shutdown
- Stable With 10-µF Ceramic Output Capacitor
- Reverse-Battery Protection
- Reverse Current Protection
The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very-low output noise, which makes them ideal for sensitive RF supply applications.
Output voltage range is from 1.21 to 20 V. The TPS7A45xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS7A45xx Low-Noise Fast-Transient-Response 1.5-A Low-Dropout Voltage Regulators 数据表 (Rev. F) | PDF | HTML | 2015-11-18 | ||
| 应用手册 | LDO 噪声揭秘 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2020-9-16 | |
| 应用手册 | Using Thermal Calculation Tools for Analog Components (Rev. A) | 2019-8-30 | ||||
| 应用手册 | A Topical Index of TI LDO Application Notes (Rev. F) | 2019-6-27 | ||||
| 应用手册 | LDO PSRR Measurement Simplified (Rev. A) | PDF | HTML | 2017-8-9 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TPS7A4501EVM-385 — TPS7A4501EVM-385 评估模块
TPS7A4501EVM-385 简化了 TPS7A4501 1.5A 低噪声快速瞬态响应低压降稳压器的评估过程。该 EVM 使用户能够应用不同的输入电压电平（2.5V 至 20V）和不同的负载（0 至 1.5A）以及检查稳压输出电压的稳定性。
PARALLEL-LDO-CALC — Parallel low-dropout (LDO) calculator
并联低压降 (LDO) 计算器是一款基于 Microsoft® Excel® 的工具，它使用镇流电阻为并联 LDO 稳压器提供最坏情形分析。该工具可帮助用户确定所需的最低并联 LDO 稳压器数量，以及满足一组系统要求的合适镇流电阻。
计算器中预填充了并联应用中常用 LDO 稳压器的数据表信息。用户可以根据其系统要求来评估哪款 LDO 稳压器器件能够满足其系统需求。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-223 (DCQ) | 6 | Ultra Librarian |
| TO-263 (KTT) | 5 | Ultra Librarian |
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