首頁 電源管理 線性與低壓差 (LDO) 穩壓器
首頁
電源管理
線性與低壓差 (LDO) 穩壓器

TPS7B68-Q1

現行

具有 WD 的汽車 500-mA、無電池 (40-V)、高 PSRR、低 IQ、低壓差電壓穩壓器

立即訂購
產品規格表

TPS7B68-Q1

現行
產品規格表 立即訂購

產品詳細資料

Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Iq (typ) (mA) 0.019 Thermal resistance θJA (°C/W) 38 TI functional safety category Functional Safety-Capable Rating Automotive Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Power good, Watchdog timer Accuracy (%) 2 PSRR at 100 KHz (dB) 55 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Iq (typ) (mA) 0.019 Thermal resistance θJA (°C/W) 38 TI functional safety category Functional Safety-Capable Rating Automotive Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Features Enable, Power good, Watchdog timer Accuracy (%) 2 PSRR at 100 KHz (dB) 55 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Maximum output current: 500 mA
  • 4-V to 40-V wide VIN input-voltage range with up to 45-V transients
  • Fixed 3.3-V and 5-V outputs
  • Maximum dropout voltage: 600 mV at 500 mA
  • Stable with output capacitor in wide-range of capacitance (4.7 µF to 500 µF) and ESR (0.001 Ω to 20 Ω)
  • Low quiescent current (I(Q)):
    • < 4 µA when EN is low (shutdown mode)
    • 19 µA typical at light loads with WD_EN high (watchdog disabled)
  • Configurable for window watchdog or standard watchdog
  • Open-to-closed window ratio configurable as 1:1 or 8:1
  • Fully adjustable watchdog period (from 10 ms to 500 ms)
  • 10% accurate watchdog period
  • Dedicated WD_EN pin to control watchdog ON-OFF
  • Fully adjustable power-good threshold and power-good delay period
  • Low Input-voltage tracking to UVLO
  • Integrated fault protection:
    • Overload current-limit protection
    • Thermal shutdown
  • 28-Pin HTSSOP package
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Maximum output current: 500 mA
  • 4-V to 40-V wide VIN input-voltage range with up to 45-V transients
  • Fixed 3.3-V and 5-V outputs
  • Maximum dropout voltage: 600 mV at 500 mA
  • Stable with output capacitor in wide-range of capacitance (4.7 µF to 500 µF) and ESR (0.001 Ω to 20 Ω)
  • Low quiescent current (I(Q)):
    • < 4 µA when EN is low (shutdown mode)
    • 19 µA typical at light loads with WD_EN high (watchdog disabled)
  • Configurable for window watchdog or standard watchdog
  • Open-to-closed window ratio configurable as 1:1 or 8:1
  • Fully adjustable watchdog period (from 10 ms to 500 ms)
  • 10% accurate watchdog period
  • Dedicated WD_EN pin to control watchdog ON-OFF
  • Fully adjustable power-good threshold and power-good delay period
  • Low Input-voltage tracking to UVLO
  • Integrated fault protection:
    • Overload current-limit protection
    • Thermal shutdown
  • 28-Pin HTSSOP package

In automotive microcontroller or microprocessor power-supply applications, the watchdog is used to monitor the microcontroller working status to prevent software runaway. The watchdog must be independent of the microcontroller in a reliable system.

The TPS7B68-Q1 is a 500-mA watchdog LDO designed for an operating voltage up to 40 V, with typical quiescent current of only 19 µA at light load. The device integrates a programmable function for selecting a window or standard watchdog, with an external resistor to set the watchdog time within 10% accuracy.

The PG pin on the TPS7B68-Q1 indicates when the output voltage is stable and in regulation. The power-good delay period and power-good threshold can be adjusted by external components. The device also features an integrated short-circuit and overcurrent protection. The combination of such features makes this device particularly flexible and suitable to supply microcontroller systems in automotive applications.

In automotive microcontroller or microprocessor power-supply applications, the watchdog is used to monitor the microcontroller working status to prevent software runaway. The watchdog must be independent of the microcontroller in a reliable system.

The TPS7B68-Q1 is a 500-mA watchdog LDO designed for an operating voltage up to 40 V, with typical quiescent current of only 19 µA at light load. The device integrates a programmable function for selecting a window or standard watchdog, with an external resistor to set the watchdog time within 10% accuracy.

The PG pin on the TPS7B68-Q1 indicates when the output voltage is stable and in regulation. The power-good delay period and power-good threshold can be adjusted by external components. The device also features an integrated short-circuit and overcurrent protection. The combination of such features makes this device particularly flexible and suitable to supply microcontroller systems in automotive applications.
open-in-new 尋找其它 線性與低壓差 (LDO) 穩壓器
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 3
類型 標題 日期
* Data sheet TPS7B68-Q1 500-mA 40-V high-voltage ultralow quiescent-current watchdog LDO datasheet (Rev. C) PDF | HTML 2019年 2月 14日
Functional safety information TPS7B68-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2022年 10月 24日
Technical article Discrete SBCs: versatile and scalable solutions for any application PDF | HTML 2017年 7月 27日

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)。

開發板

TPS7B6850EVM — TPS7B6850-Q1 500mA 看門狗 LDO 穩壓器評估模組

The TPS7B6850EVM evaluation module (EVM) helps you evaluate the operation and performance of the TPS7B6850-Q1 watchdog low-dropout (LDO) regulator. The TPS7B6850-Q1 device is a monolithic integrated 40-V 500-mA watchdog LDO regulator in a 28-pin HTSSOP (...)
使用指南: PDF
TI.com 無法提供
模擬型號

TPS7B6833-Q1 PSpice Transient Model

SLVMBW4.ZIP (139 KB) - PSpice Model
下載
模擬型號

TPS7B6850-Q1 PSpice Transient Model

SLVMBW5.ZIP (143 KB) - PSpice Model
下載
封裝 引腳 下載
HTSSOP (PWP) 28 檢視選項
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • 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
  • 資格摘要
  • 進行中可靠性監測
內含資訊：
  • 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。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片