TPS7B87-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: 3V to 40V (42V max)
- Output voltage range: 3.3V and 5V (fixed)
- Maximum output current: 500mA
- Output voltage accuracy: ±0.85% (max)
- Low dropout voltage:
- 475mV (max) at 450mA
- Low quiescent current:
- 17µA (typ) at light loads
- Excellent line transient response:
- ±2% VOUT deviation during cold-crank
- ±2% VOUT deviation (1V/µs VIN slew rate)
- Power-good with programmable delay period
- Stable with a 2.2µF or larger capacitor
-
Functional Safety-Capable
- Documentation available to aid functional safety system design
- Package options:
- 5-pin TO-252 package: 29.7°C/W RθJA
- 8-pin HSOIC-8 package with thermal pad: 41.8°C/W RθJA
The TPS7B87-Q1 is a low-dropout linear regulator designed to connect to the battery in automotive applications. The device has an input voltage range extending to 40V, which allows the device to withstand transients (such as load dumps) that are anticipated in automotive systems. With only a 17µA quiescent current at light loads, the device is designed for powering always-on components such as microcontrollers (MCUs) and controller area network (CAN) transceivers in standby systems.
The device has state-of-the-art transient response that allows the output to quickly react to changes in load or line (for example, during cold-crank conditions). Additionally, the device has a novel architecture that minimizes output overshoot when recovering from dropout. During normal operation, the device has a tight DC accuracy of ±0.85% over line, load, and temperature.
The power-good delay can be adjusted by external components, allowing the delay time to be configured to fit application-specific systems.
The device is available in thermally conductive packaging to allow the device to efficiently transfer heat to the circuit board.
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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 | TPS7B87-Q1 Automotive, 500mA, 40V, Low-Dropout Regulator With Power-Good datasheet (Rev. B) | PDF | HTML | 2025/11/5 | ||
| 應用說明 | An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) | PDF | HTML | 2025/9/23 | |||
| 功能安全資訊 | TPS7B87-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2025/7/1 | |||
| 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。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TO-252 (KVU) | 5 | Ultra Librarian |
| HSOIC (DDA) | 8 | 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。