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TPS7B4254-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Device HBM ESD classification level 3A
- Device CDM ESD classification level C6
- Wide input voltage range: –40V to 45V (max)
- Output voltage adjust range: 2V to 40V
- Output current capability: 150mA
- Very low output-tracking tolerance: ±4mV
- Low-dropout voltage: 160mV for IOUT = 100mA
- Low quiescent current (I(Q)):
- < 4µA when ADJ = low
- 60µA typical at light load
- Extremely wide ESR range:
- 10µF to 500µF ceramic output capacitor
- ESR range from 1mΩ to 20Ω
- Reverse polarity protection
- Current-limit and thermal-shutdown protection
- Output short-circuit-proof to ground and supply
- Inductive clamp at OUT pin
- 8-pin HSOIC PowerPAD™ package with exposed thermal pad
- For a newer drop-in alternative in the HSOIC package, see the TPS7B4258-Q1 device.
For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.
The TPS7B4254-Q1 is designed for automotive applications with a 45V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or as a voltage tracker to build one closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.
To provide an accurate power supply to the off-board modules, the device offers a 4mV ultra-low tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under a reverse-polarity condition. The TPS7B4254-Q1 also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS7B4254-Q1 Automotive, 150mA, 40V, Voltage-Tracking LDO With 4mV Tracking Tolerance datasheet (Rev. C) | PDF | HTML | 2025年 11月 4日 |
| Product overview | Robust Tracking LDOs for Powering Off Board Sensors | PDF | HTML | 2025年 10月 1日 | |
| Functional safety information | TPS7B4254-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) | PDF | HTML | 2023年 4月 28日 | |
| Application brief | Automotive Off-Board Sensor Power Considerations | 2018年 9月 20日 | ||
| More literature | Fundamentals of designing with LDOs in auto battery direct connect applications | 2017年 2月 27日 | ||
| Application note | Using Tracking LDOs as High-Side Switch (for Low-Current Applications) | 2016年 10月 28日 | ||
| Application note | Various Applications for Voltage-Tracking LDO | 2016年 8月 3日 |
設計與開發
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TPS7B4254EVM — TPS7B4254-Q1 電壓追蹤 LDO 穩壓器評估模組
高達 VIN = 45V 的供應電壓，可根據在調整輸入針腳 ADJ 上以高準確度，以及高達 150mA 負載的參考電壓進行調節。
TPS7B4254-Q1 TINA-TI Transient Reference Design (Rev. A)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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。