TPS7B7802-Q1
- AEC-Q100 qualified for automotive
applications:
- Temperature grade 1: -40℃ to 125℃, TA
- Junction temperature; -40℃ to 150℃, TJ
- Wide input voltage range:
- Absolute maximum range: -40V to 45V
- Operating range: 4.5V to 40V
- Output voltage:
- Wide range of output voltage can be set using external resistors: 2V to 40V
- Output voltage range programmed using I2C without external resistors: 2V to 27.4V in 100mV steps
- Power switch mode can be set using I2C (internal FB mode) or tying FB to GND (external FB resistor mode)
- Supports up to 300mA of load current per channel
- High accuracy current sense (≤ ±15%) to detect low load currents (≤25mA) without further calibration.
- Adjustable current limit via I2C programming
- Low dropout voltage: 315mV (max) at 100mA
- Stable over a wide range of
ceramic output capacitor values:
- COUT Range: 4.7µF to 100µF
- ESR Range : 1mΩ to 500mΩ
- Integrated protection features:
- Reverse current protection
- Reverse polarity protection
- Overtemperature protection
- Protection against output short-circuit to ground and battery
- Integrated diagnostic and
monitoring features using I2C interface:
- Input and Output voltage Monitoring
- Load Current Monitoring
- Junction Temperature monitoring
- Open circuit detection
- Output under-voltage and over-voltage detection.
The TPS7B7802-Q1 is a monolithic dual channel, high voltage low-dropout regulator with an integrated ADC and I2C interface. The device has a wide input voltage operating range, and is designed to protect against a 45V input voltage load dump scenario. This device is an excellent choice to power remotely located LNAs (associated with AM/FM/GNSS antenna), microphone and camera modules over coax cables. In harsh automotive environments, coax cables are potentially exposed to various fault conditions, increasing risk of failure. Such conditions include short to ground, short to battery, and overtemperature. TPS7B7802-Q1 comes with integrated protection features against each of these fault conditions, as well as protection against reverse polarity. The device incorporates a topology containing two back-to-back P-channel metal-oxide semiconductor field-effect transistors (MOSFETs). This PMOS topology eliminates the need for an external diode that is otherwise required to prevent the flow of reverse current. Each channel can provide up to 300mA of output current and an adjustable output voltage from 2V to 40V.
This device can uniquely identify and diagnose several fault conditions. This diagnosis information can be inferred from a register via I2C communication and the error pin. The integrated 10-bit ADC allows the user to continuously monitor the input voltage, output voltage, junction temperature and load current. The device features a high accuracy current sense circuitry across the current range (≤ ±15%, 1mA to 300mA) for both channels. This feature allows the device to precisely detect and distinguish between open, normal and short-circuit conditions without further calibration. Each channel also offers adjustable current limit, that can be set using I2C communication.
This device operates over −40°C to +125°C ambient temperature range and is available in a thermally conductive package with wettable flanks.
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 | TPS7B7802-Q1 Automotive, Dual-Channel LDO With Diagnostics and I2 C Interface datasheet | PDF | HTML | 2026/6/22 |
設計與開發
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TPS7B78EVM-131 — TPS7B780x-Q1 評估模組
TPS7B78EVM-131 是一款評估模組 (EVM)，專為輕鬆測量與設定具備診斷功能與 I2C 介面的 TPS7B780x-Q1 系列車規 LDO 所設計。此 EVM 包含一個 USB 轉 I2C 轉接器、高速負載暫態測試電路、輸入與輸出電流測量配置，以及用於設定 TPS7B780x-Q1 的跳線。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTJ) | 20 | 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。