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線性與低壓差 (LDO) 穩壓器

TPS7A84A

現行

具有電源良好功能的 3-A、低 VIN (1.1-V)、低雜訊、高準確度、超低壓差電壓穩壓器

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TPS7A84 現行 具有高準確度且具有電源良好功能的 3-A、低 VIN、低雜訊、超低壓差電壓穩壓器 3-A LDO regulator with good accuracy (1%) and improved thermal resistance (35.4°C/W).

TPS7A84A

現行
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產品詳細資料

Output options Adjustable Output, Fixed Output Iout (max) (A) 3 Vin (max) (V) 6.5 Vin (min) (V) 1.1 Vout (max) (V) 5.15 Vout (min) (V) 0.5 Noise (µVrms) 4.4 Iq (typ) (mA) 2.8 Thermal resistance θJA (°C/W) 43 Rating Catalog Load capacitance (min) (µF) 47 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 0.75 PSRR at 100 KHz (dB) 25 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 3 Vin (max) (V) 6.5 Vin (min) (V) 1.1 Vout (max) (V) 5.15 Vout (min) (V) 0.5 Noise (µVrms) 4.4 Iq (typ) (mA) 2.8 Thermal resistance θJA (°C/W) 43 Rating Catalog Load capacitance (min) (µF) 47 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 0.75 PSRR at 100 KHz (dB) 25 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
VQFN (RGR) 20 12.25 mm² 3.5 x 3.5
  • Low dropout: 180 mV (maximum) at 3 A with BIAS
  • 0.75% (maximum) accuracy over line, load, and temperature with BIAS
  • Output voltage noise: 4.4 µVRMS
  • Input voltage range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5 V
  • TPS7A8400A output voltage range:
    • Adjustable operation: 0.8 V to 5.15 V
    • ANY-OUT™ operation: 0.8 V to 3.95 V
  • TPS7A8401A output voltage range:
    • Adjustable operation: 0.5 V to 5.15 V
    • ANY-OUT™ operation: 0.5 V to 2.075 V
  • Power-supply ripple rejection:
    • 40 dB at 500 kHz
  • Excellent load transient response
  • Adjustable soft-start in-rush control
  • Open-drain power-good (PG) output
  • Low dropout: 180 mV (maximum) at 3 A with BIAS
  • 0.75% (maximum) accuracy over line, load, and temperature with BIAS
  • Output voltage noise: 4.4 µVRMS
  • Input voltage range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5 V
  • TPS7A8400A output voltage range:
    • Adjustable operation: 0.8 V to 5.15 V
    • ANY-OUT™ operation: 0.8 V to 3.95 V
  • TPS7A8401A output voltage range:
    • Adjustable operation: 0.5 V to 5.15 V
    • ANY-OUT™ operation: 0.5 V to 2.075 V
  • Power-supply ripple rejection:
    • 40 dB at 500 kHz
  • Excellent load transient response
  • Adjustable soft-start in-rush control
  • Open-drain power-good (PG) output

The TPS7A84A is a low-noise, low-dropout linear regulator (LDO) capable of sourcing 3 A with only 180-mV of maximum dropout. The device is offered in two output voltage ranges. The TPS7A8400A output voltage is pin-programmable from 0.8 V to 3.95 V, with a 50-mV resolution, and adjustable from 0.8 V to 5.15 V using an external resistor divider. The TPS7A8401A output voltage is pin-programmable from 0.5 V to 2.075 V, with a 25-mV resolution, and adjustable from 0.5 V to 5.15 V using an external resistor divider.

The combination of low-noise, high-PSRR, and high output-current capability makes the TPS7A84A ideal to power noise-sensitive components such as those found in high-speed communications, video, medical, or test and measurement applications. The high performance of the TPS7A84A limits power-supply-generated phase noise and clock jitter, making this device ideal for powering high-performance serializer and deserializer (SerDes), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. Specifically, RF amplifiers benefit from the high-performance and > 5-V output capability of the device.

For digital loads [such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs)] requiring low-input voltage, low-output (LILO) voltage operation, the exceptional accuracy (0.75% over line, load, and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A84A ensure optimal system performance.

The versatility of the TPS7A84A makes the device a component of choice for many demanding applications.

The TPS7A84A is a low-noise, low-dropout linear regulator (LDO) capable of sourcing 3 A with only 180-mV of maximum dropout. The device is offered in two output voltage ranges. The TPS7A8400A output voltage is pin-programmable from 0.8 V to 3.95 V, with a 50-mV resolution, and adjustable from 0.8 V to 5.15 V using an external resistor divider. The TPS7A8401A output voltage is pin-programmable from 0.5 V to 2.075 V, with a 25-mV resolution, and adjustable from 0.5 V to 5.15 V using an external resistor divider.

The combination of low-noise, high-PSRR, and high output-current capability makes the TPS7A84A ideal to power noise-sensitive components such as those found in high-speed communications, video, medical, or test and measurement applications. The high performance of the TPS7A84A limits power-supply-generated phase noise and clock jitter, making this device ideal for powering high-performance serializer and deserializer (SerDes), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. Specifically, RF amplifiers benefit from the high-performance and > 5-V output capability of the device.

For digital loads [such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs)] requiring low-input voltage, low-output (LILO) voltage operation, the exceptional accuracy (0.75% over line, load, and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A84A ensure optimal system performance.

The versatility of the TPS7A84A makes the device a component of choice for many demanding applications.
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TPS74401 現行 3-A、低 VIN (0.8-V)、低雜訊、高 PSRR、可調式超低壓降電壓穩壓器 3-A LDO regulator with a smaller VOUT range (0.8 V to 3.3 V).

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類型 標題 日期
* Data sheet TPS7A84A 3-A, High-Accuracy (0.75%), Low-Noise (4.4-µVRMS) LDO Regulator datasheet (Rev. C) PDF | HTML 2020年 12月 16日
White paper Parallel LDO Architecture Design Using Ballast Resistors PDF | HTML 2022年 12月 14日
White paper Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast PDF | HTML 2022年 12月 13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

TPS7A84EVM-753 — TPS7A84 3A 高電流、1% 高準確度、4.4μVRMS LDO 穩壓器評估模組

The TPS7A84EVM-753 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS7A84, High-Current 3-A low dropout voltage regulator. The EVM circuit board is configured to be a reference design for engineering applications requiring current to a (...)
使用指南: PDF
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模擬型號

TPS7A84 PSpice Transient Model

SBVM575.ZIP (76 KB) - PSpice Model
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模擬型號

TPS7A84 Unencrypted PSpice Transient Model

SBVM574.ZIP (3 KB) - PSpice Model
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計算工具

PARALLEL-LDO-CALC — Parallel low-dropout (LDO) calculator

The parallel low-dropout (LDO) calculator is a Microsoft® Excel®-based tool that provides worst-case analysis for parallel LDO regulators using ballast resistors. The tool helps the user identify the minimum number of parallel LDO regulators required and optimum ballast resistance for a (...)

支援產品和硬體

支援產品和硬體

產品
線性與低壓差 (LDO) 穩壓器
TPS7A33 — 具啟用功能的 1A、高 PSRR、負可調式超低壓差電壓穩壓器 TPS7A47 — 具啟用功能的 1-A、36-V、低雜訊、高 PSRR、低壓差電壓穩壓器 TPS7A47-Q1 — 具有啟用功能的汽車 1-A、36-V、低雜訊、高 PSRR、低壓差電壓穩壓器 TPS7A4701-EP — 強化型 36-V、1-A、4-μVRMS、RF LDO 電壓穩壓器 TPS7A52 — 2-A、低 VIN (1.1-V)、低雜訊、高準確度、超低壓差 (LDO) 電壓穩壓器 TPS7A52-Q1 — 車用 2-A、低 VIN (1.1-V)、低雜訊、高準確度、低壓降 (LDO) 電壓穩壓器 TPS7A53 — 3-A、低輸入電壓 (1.1 V) 低雜訊高準確度超低壓差 (LDO) 電壓穩壓器 TPS7A53-Q1 — 車用 3-A、低 VIN (1.1 V)、低雜訊、高準確度、低壓降 (LDO) 電壓穩壓器 TPS7A53A-Q1 — 車用 3-A、低 VIN 5.6-µVRMS 低雜訊高準確度低壓降電壓穩壓器 TPS7A53B — 具有 0.5-V 低 VREF 的 3-A ， 1.1-V ，低 VIN ，低雜訊高準確度超低壓差電壓穩壓器 TPS7A54 — 4-A、低 VIN (1.1-V)、低雜訊、高準確度、超低壓差 (LDO) 電壓穩壓器 TPS7A54-Q1 — 車用 4-A、低 VIN (1.1-V)、低雜訊、高準確度、低壓差 (LDO) 電壓穩壓器 TPS7A57 — 5-A、低輸入電壓、低雜訊、高準確度、低壓差 (LDO) 電壓穩壓器 TPS7A83A — 具有電源良好功能的 2-A、低 VIN (1.1-V)、低雜訊、高準確度、超低壓差電壓穩壓器 TPS7A84A — 具有電源良好功能的 3-A、低 VIN (1.1-V)、低雜訊、高準確度、超低壓差電壓穩壓器 TPS7A85A — 具有電源良好功能的 4-A、低 VIN (1.1-V)、低雜訊、高準確度、超低壓差電壓穩壓器 TPS7A94 — 1-A、超低雜訊、超高 PSRR、射頻電壓穩壓器 TPS7B7702-Q1 — 汽車 300-mA、無電池 (40-V)、雙通道可調整天線低壓差電壓穩壓器 TPS7A8300 — 2-A、低 VIN、低 2-A、低 VIN、低雜訊、超低壓降電壓穩壓器具有高準確度、低雜訊的良好電源，超低壓降電壓穩壓器具有高準確度的良好電源 TPS7A84 — 具有高準確度且具有電源良好功能的 3-A、低 VIN、低雜訊、超低壓差電壓穩壓器 TPS7A85 — 具有高準確度且具有電源良好功能的 4-A、低 VIN、低雜訊、超低壓差電壓穩壓器 TPS7A96 — 2-A、超低雜訊、超高 PSRR 射頻電壓穩壓器 TPS7A4501-SP — 抗輻射、QMLV、1.5-V 至 20-V 輸入 1.5-A 低壓降 (LDO) 穩壓器 TPS7H1111-SP — 抗輻射、QMLV 和 QMLP、1.5-A、超低雜訊高 PSRR 低壓降 (LDO) 穩壓器 TPS7H1111-SEP — 耐輻射、1.5-A、超低雜訊、超高 PSRR RF LDO 穩壓器
硬體開發
開發板
TPS7A57EVM-081 — 適用於 5-A 低雜訊高準確度低壓差 (LDO) 電壓穩壓器的 TPS7A57 評估模組
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參考設計

TIDA-01027 — 在 12.8 GSPS 資料採集系統中發揮最大效能的低雜訊電源供應參考設計

This reference design demonstrates an efficient, low-noise five-rail power supply design for very high-speed Data Acquisition (DAQ) systems capable of > 12.8 GSPS. The power supply DC/DC converters are frequency-synchronized and phase-shifted in order to minimize input current ripple and (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01232 — 高電流低雜訊並聯 LDO 參考設計

This parallel low-dropout (LDO) reference design showcases the TPS7A85 low-noise LDO linear regulator in a parallel configuration, which is capable of sourcing 3.5 A per LDO or 7 A per board. Additional design flexibility includes the ability to stack this design to meet the current (...)
Design guide: PDF
電路圖: PDF
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