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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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產品規格表

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 Rating Catalog Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 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 Rating Catalog Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 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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堅固耐用的 PRO 版本符合 IP67 防塵和防水標準，並且配備符合 AEC-Q100 第 2 級（溫度範圍 -40°C 至 +105°C）的車規影像感應器。

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光學模組

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ZRT512C-R454B-4-A 冷媒感測器模組是一款智慧型紅外線型感測器模組，內建 TI MCU 和類比裝置，採用非分散紅外線 (NDIR) 原則偵測是否存在冷媒，具有良好的選擇性且不依賴於氧氣。這是一款精巧的高性能感測器模組，結合成熟的紅外線氣體偵測技術與微型機械加工及精密電路設計打造而成。該產品易於使用，性能卓越。

從：Zhengzhou Winsen Electronics Technology Co., Ltd
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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

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