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線性與低壓差 (LDO) 穩壓器

TPS7A74

現行

具備可編程緩啟動的 1.5-A 低壓差 (LDO) 線性穩壓器

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產品規格表

TPS7A74

現行
產品規格表 立即訂購

產品詳細資料

Output options Adjustable Output Iout (max) (A) 1.5 Vin (max) (V) 6 Vin (min) (V) 0.8 Vout (max) (V) 3.6 Vout (min) (V) 0.65 Rating Catalog Noise (µVrms) 7 PSRR at 100 KHz (dB) 30 Iq (typ) (mA) 0.55 Thermal resistance θJA (°C/W) 49.3 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Soft start Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 1.5 Vin (max) (V) 6 Vin (min) (V) 0.8 Vout (max) (V) 3.6 Vout (min) (V) 0.65 Rating Catalog Noise (µVrms) 7 PSRR at 100 KHz (dB) 30 Iq (typ) (mA) 0.55 Thermal resistance θJA (°C/W) 49.3 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Soft start Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 150 Operating temperature range (°C) -40 to 125
WSON (DSD) 8 9 mm² 3 x 3
  • VOUT range: 0.65 V to 3.6 V
  • Ultra-low VIN range: 0.65 V to 6 V
  • VBIAS range: 1.7 V to 6 V
  • Low dropout: 150 mV typical at 1.5 A, VBIAS = 5 V
  • Noise: 7.1 µVRMS
  • PSRR:
    • 70 dB at 1 kHz
    • 60 dB at 10 kHz
    • 55 dB at 100 kHz
    • 50 dB at 1 MHz
  • 1.5% accuracy over line, load, and temperature
  • Programmable soft-start provides linear voltage start-up
  • VBIAS permits low VIN operation with good transient response
  • UVLO on both IN and BIAS
  • Stable with any output capacitor ≥ 10 µF
  • Package: Small, 3-mm × 3-mm × 0.8-mm WSON-8
  • VOUT range: 0.65 V to 3.6 V
  • Ultra-low VIN range: 0.65 V to 6 V
  • VBIAS range: 1.7 V to 6 V
  • Low dropout: 150 mV typical at 1.5 A, VBIAS = 5 V
  • Noise: 7.1 µVRMS
  • PSRR:
    • 70 dB at 1 kHz
    • 60 dB at 10 kHz
    • 55 dB at 100 kHz
    • 50 dB at 1 MHz
  • 1.5% accuracy over line, load, and temperature
  • Programmable soft-start provides linear voltage start-up
  • VBIAS permits low VIN operation with good transient response
  • UVLO on both IN and BIAS
  • Stable with any output capacitor ≥ 10 µF
  • Package: Small, 3-mm × 3-mm × 0.8-mm WSON-8

The TPS7A74 low-dropout (LDO) linear regulator provides an easy-to-use robust power management solution for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start up. The soft-start is monotonic and well-suited for powering many different types of processors and application-specific integrated circuits (ASICs). The enable input allows for easy sequencing with external regulators. This complete flexibility allows a solution to be configured that meets the sequencing requirements of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with special start-up requirements.

A precision reference and error amplifier deliver 1.5% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 10 µF, and is fully specified for TJ = –40°C to +125°C. The TPS7A74 is offered in a small, 3-mm × 3-mm, WSON-8 package, yielding a highly compact, total solution size.

The TPS7A74 low-dropout (LDO) linear regulator provides an easy-to-use robust power management solution for a wide variety of applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start up. The soft-start is monotonic and well-suited for powering many different types of processors and application-specific integrated circuits (ASICs). The enable input allows for easy sequencing with external regulators. This complete flexibility allows a solution to be configured that meets the sequencing requirements of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with special start-up requirements.

A precision reference and error amplifier deliver 1.5% accuracy over load, line, temperature, and process. The device is stable with any type of capacitor greater than or equal to 10 µF, and is fully specified for TJ = –40°C to +125°C. The TPS7A74 is offered in a small, 3-mm × 3-mm, WSON-8 package, yielding a highly compact, total solution size.
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* Data sheet TPS7A74 1.5-A, Low-Dropout Linear Regulator With Programmable Soft-Start datasheet (Rev. B) PDF | HTML 2022年 8月 11日
White paper Demystifying LDO Turn-On (startup) Time PDF | HTML 2024年 10月 5日

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開發板

TPS7A74EVM-068 — 適用於含可編程緩啟動的 1.5-A LDO 線性穩壓器的 TPS7A74 評估模組

TPS7A74 評估模組 (EVM) 可協助設計工程師評估 TPS7A74 線性穩壓器的運作及性能，適合其本身的電路應用。此 EVM 配置包含適合各種廣泛應用的單一低雜訊、小尺寸、線性穩壓器。該穩壓器能以低 VIN 至 VOUT 壓差提供高達 1.5 A 的負載。

爲了穩定，請使用最小降額輸出電容 4.7-µF (或更大)。隨附新增高性能負載暫態電路，以改善低壓差 (LDO) 穩壓器的測量能力。

使用指南: PDF | HTML
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TPS7A74 PSpice Transient Model

SBVM990.ZIP (63 KB) - PSpice Model
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WSON (DSD) 8 Ultra Librarian
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