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線性與低壓差 (LDO) 穩壓器

TPS7A89

現行

2A 低雜訊高準確度雙通道可調整超低壓差電壓穩壓器

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TPS7A89

現行
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產品詳細資料

Rating Catalog Vin (max) (V) 6.5 Vin (min) (V) 1.4 Iout (max) (A) 2 Output options Adjustable Output, Dual output Vout (max) (V) 5.2 Vout (min) (V) 0.8 Noise (µVrms) 3.8 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 2.1 Features Enable, Foldback Overcurrent protection, Power good, Soft start Thermal resistance θJA (°C/W) 33 Load capacitance (min) (µF) 10 Regulated outputs (#) 2 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 6.5 Vin (min) (V) 1.4 Iout (max) (A) 2 Output options Adjustable Output, Dual output Vout (max) (V) 5.2 Vout (min) (V) 0.8 Noise (µVrms) 3.8 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 2.1 Features Enable, Foldback Overcurrent protection, Power good, Soft start Thermal resistance θJA (°C/W) 33 Load capacitance (min) (µF) 10 Regulated outputs (#) 2 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
WQFN (RTJ) 20 16 mm² 4 x 4
  • Two Independent LDO Channels
  • 4-mm × 4-mm, 20-Pin WQFN Package
  • Low Output Noise: 3.8 µVRMS (10 Hz to 100 kHz)
  • Low Dropout: 180 mV (typ) at 2 A
  • Wide Input Voltage Range: 1.4 V to 6.5 V
  • Wide Output Voltage Range: 0.8 V to 5.2 V
  • High Power-Supply Rejection Ratio (PSRR):
    • 75 dB at DC
    • 40 dB at 100 kHz
    • 40 dB at 1 MHz
  • 1.0% Accuracy Over Line, Load, and Temperature
  • Excellent Load Transient Response
  • Adjustable Start-Up In-Rush Control
  • Selectable Soft-Start Charging Current
  • Independent Open-Drain Power-Good (PGx) Outputs
  • Stable with a 10 µF or Larger Ceramic Output Capacitor
  • Two Independent LDO Channels
  • 4-mm × 4-mm, 20-Pin WQFN Package
  • Low Output Noise: 3.8 µVRMS (10 Hz to 100 kHz)
  • Low Dropout: 180 mV (typ) at 2 A
  • Wide Input Voltage Range: 1.4 V to 6.5 V
  • Wide Output Voltage Range: 0.8 V to 5.2 V
  • High Power-Supply Rejection Ratio (PSRR):
    • 75 dB at DC
    • 40 dB at 100 kHz
    • 40 dB at 1 MHz
  • 1.0% Accuracy Over Line, Load, and Temperature
  • Excellent Load Transient Response
  • Adjustable Start-Up In-Rush Control
  • Selectable Soft-Start Charging Current
  • Independent Open-Drain Power-Good (PGx) Outputs
  • Stable with a 10 µF or Larger Ceramic Output Capacitor

The TPS7A89 is a dual, low-noise (3.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 2 A per channel with only 400 mV of maximum dropout.

The TPS7A89 provides the flexibility of two independent LDOs and approximately 60% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8 V to 5.2 V. The wide input-voltage range of the TPS7A89 supports operation as low as 1.4 V and up to 6.5 V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A89 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-end processors, and field-programmable gate arrays (FPGAs)].

The TPS7A89 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 3.8-µVRMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize the performance of clocking devices, ADCs, and DACs.

The TPS7A89 is a dual, low-noise (3.8 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 2 A per channel with only 400 mV of maximum dropout.

The TPS7A89 provides the flexibility of two independent LDOs and approximately 60% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8 V to 5.2 V. The wide input-voltage range of the TPS7A89 supports operation as low as 1.4 V and up to 6.5 V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A89 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-end processors, and field-programmable gate arrays (FPGAs)].

The TPS7A89 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 3.8-µVRMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize the performance of clocking devices, ADCs, and DACs.
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類型 標題 日期
* Data sheet TPS7A89 Small, Dual, 2-A, Low-Noise (3.8 μVRMS), LDO Voltage Regulator datasheet (Rev. A) PDF | HTML 2016年 7月 15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
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 2018年 3月 21日

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TPS7A8901EVM-853 — TPS7A89 小型雙路 2A 低雜訊 (3.8 μVRMS) LDO 電壓穩壓器評估模組

TPS7A8901EVM-853 評估模組採用一個典型設定，用於評估 TPS7A89（雙通道 2A 低壓差線性穩壓器）的操作與效能。EVM 電路板主要配置爲參考設計，可供需要高達每通道 2A 動態負載電流的工程應用。
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TPS7A89 PSpice Transient Model

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TPS7A89 Unencrypted PSpice Transient Model

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