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線性與低壓差 (LDO) 穩壓器

TPS7B85-Q1

現行

具有整合式電壓監控功能的車用 150mA、40V 低壓差電壓穩壓器

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產品規格表

TPS7B85-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.15 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Noise (µVrms) 280 PSRR at 100 KHz (dB) 70 Iq (typ) (mA) 0.02 Features Enable, Power good, Power-fail detect, Wettable flanks package Thermal resistance θJA (°C/W) 50.3 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 100 Operating temperature range (°C) -40 to 150
Rating Automotive Vin (max) (V) 40 Vin (min) (V) 3 Iout (max) (A) 0.15 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Noise (µVrms) 280 PSRR at 100 KHz (dB) 70 Iq (typ) (mA) 0.02 Features Enable, Power good, Power-fail detect, Wettable flanks package Thermal resistance θJA (°C/W) 50.3 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 100 Operating temperature range (°C) -40 to 150
VSON (DRC) 10 9 mm² (3 mm × 3 mm)
  • 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: 3 V to 40 V (42 V max)
  • Output voltage range: 3.3 V and 5 V (fixed)
  • Output current: up to 150 mA
  • Output voltage accuracy: ±0.75% (max)
  • Low dropout voltage:
    • 225 mV (max) at 150 mA (VOUT ≥ 3.3 V)
  • Low quiescent current:
    • 18 µA (typ)
    • 4 µA (max) when disabled
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1-V/µs VIN slew rate)
  • Integrated voltage detection
  • Power-good with adjustable threshold and programmable delay period
  • Stable with a 2.2-µF or larger capacitor
  • Functional Safety-Capable
  • Package: 10-pin VSON with thermal pad
    • Low thermal resistance (RθJA): 50.3°C/W
  • 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: 3 V to 40 V (42 V max)
  • Output voltage range: 3.3 V and 5 V (fixed)
  • Output current: up to 150 mA
  • Output voltage accuracy: ±0.75% (max)
  • Low dropout voltage:
    • 225 mV (max) at 150 mA (VOUT ≥ 3.3 V)
  • Low quiescent current:
    • 18 µA (typ)
    • 4 µA (max) when disabled
  • Excellent line transient response:
    • ±2% VOUT deviation during cold-crank
    • ±2% VOUT deviation (1-V/µs VIN slew rate)
  • Integrated voltage detection
  • Power-good with adjustable threshold and programmable delay period
  • Stable with a 2.2-µF or larger capacitor
  • Functional Safety-Capable
  • Package: 10-pin VSON with thermal pad
    • Low thermal resistance (RθJA): 50.3°C/W

The TPS7B85-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 40 V, which allows the device to withstand transients (such as load dump) that are anticipated in automotive systems. With only an 18-µA quiescent current, the device is an optimal solution 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 ±0.75% over line, load, and temperature.

The TPS7B85-Q1 is equipped with power-good and integrated voltage monitoring. The power-good delay and voltage threshold can be adjusted by external components. The integrated voltage detector can be used to monitor the input voltage and alert downstream components (such as MCUs) when the battery voltage begins to fall.

The device is available in a small VSON package that facilitates a compact printed circuit board (PCB) design. The low thermal resistance enables sustained operation despite significant dissipation across the device.

The TPS7B85-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 40 V, which allows the device to withstand transients (such as load dump) that are anticipated in automotive systems. With only an 18-µA quiescent current, the device is an optimal solution 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 ±0.75% over line, load, and temperature.

The TPS7B85-Q1 is equipped with power-good and integrated voltage monitoring. The power-good delay and voltage threshold can be adjusted by external components. The integrated voltage detector can be used to monitor the input voltage and alert downstream components (such as MCUs) when the battery voltage begins to fall.

The device is available in a small VSON package that facilitates a compact printed circuit board (PCB) design. The low thermal resistance enables sustained operation despite significant dissipation across the device.
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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 TPS7B85-Q1 150-mA, 40-V, Low-Dropout Regulator With Power-Good and Integrated Voltage Monitoring datasheet (Rev. A) PDF | HTML 2020/11/17
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 TPS7B85-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2023/4/28
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

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開發板

TPS7B8550EVM — 具有整合式電壓監控功能的 TPS7B85-Q1 150-mA 40-V LDO 電壓穩壓器評估模組

The TPS7B8550 評估模組 (EVM) 可評估 TPS7B85-Q1 線性穩壓器的運作及性能。此 EVM 配置包含適合各種應用的單一廣泛輸入電壓、小尺寸、低壓降 (LDO) 穩壓器。

穩壓器能以 LDO VIN 至 VOUT 為負載提供最高 150 mA。為保持穩定，請使用最小降額電容為 1-µF（或更大）的輸出電容器。

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TPS7B85-Q1 PSpice Transient Model

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