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TPS7A85 正在供货 具有电源正常指示功能的 4A、低输入电压、低噪声、高精度、超低压降稳压器 4-A LDO regulator with good accuracy (1%) and improved thermal resistance (35.4°C/W).

产品详情

Output options Adjustable Output, Programmable Output Iout (max) (A) 4 Vin (max) (V) 6.5 Vin (min) (V) 1.1 Vout (max) (V) 5.1 Vout (min) (V) 0.8 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) 150 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Programmable Output Iout (max) (A) 4 Vin (max) (V) 6.5 Vin (min) (V) 1.1 Vout (max) (V) 5.1 Vout (min) (V) 0.8 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) 150 Operating temperature range (°C) -40 to 125
VQFN (RGR) 20 12.25 mm² 3.5 x 3.5
  • Low Dropout: 150 mV (Typical) at 4 A
  • 0.75% (Maximum) Accuracy Over Line, Load, and Temperature With BIAS
  • Output Voltage Noise:
    • 4.4 µVRMS at 0.8-V Output
    • 7.7 µVRMS at 5.1-V Output
  • Input Voltage Range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5 V
  • ANY-OUT™ Operation:
    • Output Voltage Range: 0.8 V to 3.95 V
  • Adjustable Operation:
    • Output Voltage Range: 0.8 V to 5.1 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
  • Stable with a 47-µF or Larger Ceramic Output Capacitor
  • θJC = 3.4°C/W
  • 3.5-mm × 3.5-mm, 20-Pin VQFN
  • Low Dropout: 150 mV (Typical) at 4 A
  • 0.75% (Maximum) Accuracy Over Line, Load, and Temperature With BIAS
  • Output Voltage Noise:
    • 4.4 µVRMS at 0.8-V Output
    • 7.7 µVRMS at 5.1-V Output
  • Input Voltage Range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5 V
  • ANY-OUT™ Operation:
    • Output Voltage Range: 0.8 V to 3.95 V
  • Adjustable Operation:
    • Output Voltage Range: 0.8 V to 5.1 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
  • Stable with a 47-µF or Larger Ceramic Output Capacitor
  • θJC = 3.4°C/W
  • 3.5-mm × 3.5-mm, 20-Pin VQFN

The TPS7A85A is a low-noise (4.4 µVRMS), low dropout linear regulator (LDO) capable of sourcing 4 A with only 240 mV of maximum dropout. The device output voltage is pin-programmable from 0.8 V to 3.95 V and adjustable from 0.8 V to 5.1 V using an external resistor divider.

The combination of low-noise (4.4 µVRMS), high- PSRR, and high output current capability makes the TPS7A85A 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 TPS7A85A 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 5.1-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 load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A85A ensure optimal system performance.

The versatility of the TPS7A8500A makes the device a component of choice for many demanding applications.

The TPS7A85A is a low-noise (4.4 µVRMS), low dropout linear regulator (LDO) capable of sourcing 4 A with only 240 mV of maximum dropout. The device output voltage is pin-programmable from 0.8 V to 3.95 V and adjustable from 0.8 V to 5.1 V using an external resistor divider.

The combination of low-noise (4.4 µVRMS), high- PSRR, and high output current capability makes the TPS7A85A 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 TPS7A85A 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 5.1-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 load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A85A ensure optimal system performance.

The versatility of the TPS7A8500A makes the device a component of choice for many demanding applications.

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类型 项目标题 下载最新的英语版本 日期
* 数据表 TPS7A85A 4-A, High-Accuracy (0.75%), Low-Noise (4.4 μVRMS), LDO Regulator 数据表 PDF | HTML 2017年 6月 6日
选择指南 Low Dropout Regulators Quick Reference Guide (Rev. P) 2018年 3月 21日
EVM 用户指南 TPS7A8500EVM-579 User's Guide 2016年 2月 29日

设计和开发

如需其他信息或资源,请查看下方列表,点击标题即可进入详情页面。

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用户指南: PDF
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评估板

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TSW40RF80 评估模块 (EVM) 是一种双发双收 (2T2R) 射频采样收发器参考设计。该模块包含 DAC38RF80 双通道射频采样数模转换器 (DAC) 和 ADC32RF45 双通道射频采样模数转换器 (ADC)。


DAC38RF80 采样率高达 9GSPS,包括用于高频时钟生成的板载 PLL/VCO。输出是单端的,便于连接 50Ω 的电路。ADC32RF45 采样率高达 3GSPS。它可以选择在每个通道中使用双数字下变频器,或者通过旁路访问奈奎斯特全带宽。


TSW40RF80EVM 包括 LMK04828 时钟发生器,用于为 DAC PLL 提供参考信号,以及用于生成 (...)

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评估板

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TSW40RF82 评估模块 (EVM) 是一种双发双收 (2T2R) 射频采样收发器参考设计。该模块包含 DAC38RF82 双通道射频采样数模转换器 (DAC) 和 ADC32RF45 双通道射频采样模数转换器 (ADC)。

DAC38RF82 采样率高达 9GSPS,采用交流耦合,带有板载 2:1 阻抗变压器的差动输出,可实现平衡至不平衡转换。ADC32RF45 采样率高达 3GSPS。它可以选择在每个通道中使用双数字下变频器,或者通过旁路访问奈奎斯特全带宽。

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用户指南: PDF
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仿真模型

TPS7A85 PSpice Transient Model

SBVM573.ZIP (77 KB) - PSpice Model
仿真模型

TPS7A85 Unencrypted PSpice Transient Model

SBVM572.ZIP (3 KB) - PSpice Model
参考设计

TIDA-01027 — 可最大限度提升 12.8GSPS 数据采集系统性能的低噪声电源参考设计

此参考设计显示了适用于能超过 12.8GSPS 的极高速 DAQ 系统的高效率、低噪声 5 轨电源设计。该电源的直流/直流转换器进行了频率同步和相移,从而使输入电流纹波最小并控制频率成分。此外,它还使用高性能 HotRod™ 封装技术将任何潜在的辐射电磁干扰 (EMI) 降到了最低。
设计指南: PDF
原理图: PDF
参考设计

TIDA-01232 — 高电流低噪声并行 LDO 参考设计

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设计指南: PDF
原理图: PDF
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VQFN (RGR) 20 了解详情

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  • MTBF/时基故障估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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