LM1117-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Junction temperature: –40°C to +150°C, TJ
- Input voltage range VIN:
- Absolute maximum: 20V
- Operating range: 2.5V to 18V
- Output voltage range VOUT:
- 1.2V, 3.3V, 5V, 12V fixed
- 0.8V to 13.0V (fixed, 100mV steps) available upon request
- Output current: Up to 1A
- Low quiescent current IQ: 65µA (typical)
- ±1% output accuracy
- High PSRR:
- 60dB at 1kHz
- 40dB at 1MHz
- Internal soft-start time: 500µs (typical)
- Foldback current limiting and thermal protection
- Stable with 1µF ceramic output capacitors
- Packages:
- SOT-223 (DCY), RθJA= 95.4°C/W
- TO-252 (KVU), RθJA= 67.2°C/W
The LM1117-Q1 is an AEC-Q100 qualified linear voltage regulator for automotive applications. The device provides improved performance compared to traditional x1117 regulators, with tighter output accuracy and low quiescent current (IQ) to minimize standby power consumption.
The LM1117-Q1 input voltage range is from 2.5V to 18V (20V absolute maximum). The device is available in 1.2V, 3.3V, 5V, and 12V fixed output voltages.
The wide bandwidth PSRR performance of the LM1117-Q1 is typically greater than 60dB at 1kHz and 40dB at 1MHz, which attenuates the switching frequency of an upstream DC/DC converter.
Additionally, the LM1117-Q1 has an internal soft-start feature to reduce inrush current during start-up, which helps save space and cost in a design by minimizing the need for input capacitance. The LM1117-Q1 features a foldback current limit that reduces the power dissipation of the device during high-load current faults or shorting events.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM1117-Q1 18V, 1A, Automotive, Fixed-Output Linear Voltage Regulator datasheet (Rev. B) | PDF | HTML | 2026/4/16 | ||
| 應用說明 | An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) | PDF | HTML | 2025/9/23 | |||
| 應用說明 | A Topical Index of TI LDO Application Notes (Rev. F) | 2019/6/27 | ||||
| 電子書 | LDO Basics (Rev. A) | 2019/4/8 | ||||
| 技術文章 | LDO basics: dropout | PDF | HTML | 2017/3/16 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
MLTLDO2EVM-037 — 適用於 DCY、DDA 和 KVU 封裝的通用 LDO 線性電壓穩壓器評估模組
MLTLDO2EVM-037 多重封裝低壓差 (LDO) 評估模組 (EVM) 可讓設計工程師評估多種常用線性穩壓器封裝的運作情形及性能，以利在自己的電路應用中使用。此 EVM 配置包含 DDA、3 針腳和 5 針腳 KVU，以及用於工程師焊接和評估其零件的 DCY 封裝板上配置。
TLV1117LV33EVM-714 — TLV1117LV 1-A 固定正電壓 LDO 線性穩壓器評估模組
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TO-252 (KVU) | 3 | Ultra Librarian |
| SOT-223 (DCY) | 4 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。