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線性與低壓差 (LDO) 穩壓器

TPS746-Q1

現行

具電源良好指示的車用 1A 低 IQ 高 PSRR 低壓差 (LDO) 電壓穩壓器

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TPS746-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.5 Iout (max) (A) 1 Output options Adjustable Output, Fixed Output Vout (max) (V) 5.5 Vout (min) (V) 0.55 Fixed output options (V) 0.7, 1, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.5, 1.7, 1.8, 2.5, 2.8, 2.9, 3, 3.3, 3.4, 5, 5.5 Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Features Enable, Foldback Overcurrent protection, Power good, Wettable flanks package Thermal resistance θJA (°C/W) 55 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 0.85 Dropout voltage (Vdo) (typ) (mV) 190 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.5 Iout (max) (A) 1 Output options Adjustable Output, Fixed Output Vout (max) (V) 5.5 Vout (min) (V) 0.55 Fixed output options (V) 0.7, 1, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.5, 1.7, 1.8, 2.5, 2.8, 2.9, 3, 3.3, 3.4, 5, 5.5 Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Features Enable, Foldback Overcurrent protection, Power good, Wettable flanks package Thermal resistance θJA (°C/W) 55 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 0.85 Dropout voltage (Vdo) (typ) (mV) 190 Operating temperature range (°C) -40 to 125
VSON (DRB) 8 9 mm² 3 x 3 WSON (DRV) 6 4 mm² 2 x 2
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Device operating junction temperature range:
    • –40°C to +150°C
  • Package:
    • 2mm × 2mm wettable flank WSON
    • 3mm × 3mm wettable flank VSON
  • Input voltage range: 1.5V to 6.0V
  • Output voltage range:
    • Fixed option: 0.65V to 5.0V
    • Adjustable option: 0.55V to 5.5V
  • High PSRR: 38dB at 100kHz
  • Output accuracy: ±0.85% typical, ±1.5% maximum
  • Power-good output options:
    • Open-drain or push-pull
  • Ultra-low dropout:
    • 265mV (max) at 1A (3.3VOUT)
  • Stable with a 1µF or larger capacitor
  • Low IQ: 25µA (typical)
  • Active output discharge
  • Functional Safety-Capable
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin VSON), RθJA = 55.5°C/W
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Device operating junction temperature range:
    • –40°C to +150°C
  • Package:
    • 2mm × 2mm wettable flank WSON
    • 3mm × 3mm wettable flank VSON
  • Input voltage range: 1.5V to 6.0V
  • Output voltage range:
    • Fixed option: 0.65V to 5.0V
    • Adjustable option: 0.55V to 5.5V
  • High PSRR: 38dB at 100kHz
  • Output accuracy: ±0.85% typical, ±1.5% maximum
  • Power-good output options:
    • Open-drain or push-pull
  • Ultra-low dropout:
    • 265mV (max) at 1A (3.3VOUT)
  • Stable with a 1µF or larger capacitor
  • Low IQ: 25µA (typical)
  • Active output discharge
  • Functional Safety-Capable
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin VSON), RθJA = 55.5°C/W

The TPS746-Q1 is a 1A, ultra-low-dropout regulator (LDO) with power-good functionality. This device is available in a small 6-pin, 2mm × 2mm WSON package and a small 8-pin, 3mm × 3mm VSON package with wettable flanks to facilitate optical inspection. The TPS746-Q1 consumes low quiescent current and provides fast line and load transient performance.

The TPS746-Q1 is a flexible device for post-regulation by supporting an input voltage range from 1.5V to 6.0V and an externally adjustable output range of 0.55V to 5.5V. The device also features fixed output voltages for powering common voltage rails.

The TPS746-Q1 has a power-good (PG) output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power supplies in the system.

The TPS746-Q1 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides high accuracy of ±0.85% (max) at 25°C and ±1.5% (max) over temperature. This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS746-Q1 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.

The TPS746-Q1 is a 1A, ultra-low-dropout regulator (LDO) with power-good functionality. This device is available in a small 6-pin, 2mm × 2mm WSON package and a small 8-pin, 3mm × 3mm VSON package with wettable flanks to facilitate optical inspection. The TPS746-Q1 consumes low quiescent current and provides fast line and load transient performance.

The TPS746-Q1 is a flexible device for post-regulation by supporting an input voltage range from 1.5V to 6.0V and an externally adjustable output range of 0.55V to 5.5V. The device also features fixed output voltages for powering common voltage rails.

The TPS746-Q1 has a power-good (PG) output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power supplies in the system.

The TPS746-Q1 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides high accuracy of ±0.85% (max) at 25°C and ±1.5% (max) over temperature. This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS746-Q1 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.
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類型 標題 日期
* Data sheet TPS746-Q1 Automotive, 1A LDO With Power-Good in Small Wettable Flank Packages datasheet (Rev. D) PDF | HTML 2025年 4月 14日
Application brief Discrete Power Design for C2000™ PDF | HTML 2024年 8月 15日
Test report Power Delivery Reference Design for AMD Versal™ AI Edge Series PDF | HTML 2024年 3月 25日
Functional safety information TPS746-Q1 Functional Safety FIT Rate, FMD and Pin FMEA PDF | HTML 2022年 8月 10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

TPS746EVM-009 — 具有電源良好狀態的 TPS746 可調整 1-A LDO 線性穩壓器評估模組

TPS746EVM-009 評估模組（EVM）設計為典型配置，用於評估 TPS746 的運作和性能。TPS746 是一款 1A、低輸入電壓（Low-Vin）、具備電源良好指示功能的低壓差 (LDO) 穩壓器。

EVM 電路板主要配置爲參考設計，可供需要高達 1 A 動態負載電流的工程應用。

使用指南: PDF
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參考設計

PMP23227 — 適用於 AMD Versal™ Edge AI 系列的電力傳輸參考設計

此參考設計展示了 VE2302 裝置所需的電源軌如何由 TI 的穩壓器 IC 供電。AMD 的最小供應器電源軌電力整合。請參見 AMD 的 Power Design Manager (PDM) 工具，以了解所有可用的電源整合選項。在預估任何應用的功率時，請使用 PDM。此參考設計使用範例功率估計。設計 AI Edge 系列其他裝置的電源樹狀架構時，也可使用此設計作為基礎。此系統的原始電源通常介於 8VIN 至 18VIN 之間，並可提供約 50W 的功率。
Test report: PDF
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VSON (DRB) 8 Ultra Librarian
WSON (DRV) 6 Ultra Librarian
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