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線性與低壓差 (LDO) 穩壓器

TPS745

現行

具有電源良好指示的 500mA、低 IQ、高準確度、可調整超低壓差電壓穩壓器

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TPS745

現行
產品規格表 立即訂購

產品詳細資料

Output options Adjustable Output Iout (max) (A) 0.5 Vin (max) (V) 6 Vin (min) (V) 1.5 Vout (max) (V) 5.5 Vout (min) (V) 0.55 Noise (µVrms) 53 Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 PSRR at 100 KHz (dB) 45 Dropout voltage (Vdo) (typ) (mV) 95 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 0.5 Vin (max) (V) 6 Vin (min) (V) 1.5 Vout (max) (V) 5.5 Vout (min) (V) 0.55 Noise (µVrms) 53 Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 PSRR at 100 KHz (dB) 45 Dropout voltage (Vdo) (typ) (mV) 95 Operating temperature range (°C) -40 to 125
WSON (DRV) 6 4 mm² 2 x 2
  • Input Voltage Range: 1.5 V to 6.0 V
  • Adjustable Output Voltage:
    • 0.55 V to 5.5 V
  • Very Low Dropout:
    • 130 mV (max) at 500 mA (3.3 VOUT)
  • High Output Accuracy: 0.7% (Typical) and 1% (Maximum Over Temperature)
  • Open-Drain Power-Good Output
  • IQ: 25 µA (Typical)
  • Built-In Soft-Start With Monotonic VOUT Rise
  • Package:
    • 2-mm × 2-mm WSON-6 (DRV)
  • Active Output Discharge
  • Input Voltage Range: 1.5 V to 6.0 V
  • Adjustable Output Voltage:
    • 0.55 V to 5.5 V
  • Very Low Dropout:
    • 130 mV (max) at 500 mA (3.3 VOUT)
  • High Output Accuracy: 0.7% (Typical) and 1% (Maximum Over Temperature)
  • Open-Drain Power-Good Output
  • IQ: 25 µA (Typical)
  • Built-In Soft-Start With Monotonic VOUT Rise
  • Package:
    • 2-mm × 2-mm WSON-6 (DRV)
  • Active Output Discharge

The TPS745 is an adjustable 500-mA low-dropout (LDO) regulator with power-good functionality. This device is available in a small, 6-pin, 2-mm × 2-mm WSON package and consumes very low quiescent current and provides fast line and load transient performance. The TPS745 features an ultra-low dropout of 130 mV at 500 mA that can help improve the power efficiency of the system.

The TPS745 is optimized for a wide variety of applications by supporting an input voltage range from 1.5 V to 6.0 V and an externally adjustable output range of 0.55 V to 5.5 V. The low output voltage enables this LDO to power the modern microcontrollers with lower core voltages.

The TPS745 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 the sequencing multiple power sources in the system.

The TPS745 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 0.7% (max) at 25°C and 1% (max) over temperature (85ºC). This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS745 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.




The TPS745 is an adjustable 500-mA low-dropout (LDO) regulator with power-good functionality. This device is available in a small, 6-pin, 2-mm × 2-mm WSON package and consumes very low quiescent current and provides fast line and load transient performance. The TPS745 features an ultra-low dropout of 130 mV at 500 mA that can help improve the power efficiency of the system.

The TPS745 is optimized for a wide variety of applications by supporting an input voltage range from 1.5 V to 6.0 V and an externally adjustable output range of 0.55 V to 5.5 V. The low output voltage enables this LDO to power the modern microcontrollers with lower core voltages.

The TPS745 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 the sequencing multiple power sources in the system.

The TPS745 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 0.7% (max) at 25°C and 1% (max) over temperature (85ºC). This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS745 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 TPS745 500-mA, High Accuracy, Adjustable LDO With Power-Good in a Small Size Package datasheet (Rev. A) PDF | HTML 2018年 12月 14日
Application note An empirical analysis of the impact of board layout on LDO thermal performance 2019年 2月 22日
EVM User's guide TPS746EVM-009 Evaluation Module User's Guide 2018年 3月 14日

設計與開發

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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

The TPS746EVM-009 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS746, which is a 1-A, low-Vin, low-dropout (LDO) voltage regulator with power good.

The EVM circuit board is configured to be a reference design for engineering (...)

使用指南: PDF
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模擬型號

TLV74501P PSpice Transient Model

SBVM932.ZIP (44 KB) - PSpice Model
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模擬型號

TPS74501P Unencrypted PSpice Transient Model

SBVM931.ZIP (3 KB) - PSpice Model
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參考設計

TIDA-010231 — 適合光電應用、適用於電弧偵測的類比前端參考設計

此參考設計在光伏系統中實作四通道類比前端進行 DC 電弧偵測，支援高達 tp 1000 V 的 DC 電壓及高達 10 A 的電流。透過分析太陽能面板和逆變器間 DC 電流的 AC 雜訊，即可偵測電弧。在使用 C2000 即時微控制器 (MCU) 完成頻率分析前，訊號會由條件為類比濾波器階段的電流變壓器擷取，並由 16 位元 ADC ADC8363 取樣。此設計相容於不同 C2000 controlCARD，可將 MCU 調整至系統。可使用 ADS8363 的旁路選項來評估 C2000™ MCU 的內部 ADC。C2000 軟體套件可在最新 (...)
Design guide: PDF
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