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线性和低压降 (LDO) 稳压器

TPS794

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具有使能功能的 250mA、低压降稳压器

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数据表

TPS794

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数据表 立即订购

米6体育平台手机版_好二三四详情

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.25 Vin (max) (V) 5.5 Vin (min) (V) 2.7 Vout (max) (V) 5.4 Vout (min) (V) 1.22 Fixed output options (V) 1.8, 2.5, 2.8, 3, 3.3 Rating Catalog Noise (µVrms) 32 PSRR at 100 KHz (dB) 38 Iq (typ) (mA) 0.17 Thermal resistance θJA (°C/W) 53 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 155 Operating temperature range (°C) -40 to 85
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.25 Vin (max) (V) 5.5 Vin (min) (V) 2.7 Vout (max) (V) 5.4 Vout (min) (V) 1.22 Fixed output options (V) 1.8, 2.5, 2.8, 3, 3.3 Rating Catalog Noise (µVrms) 32 PSRR at 100 KHz (dB) 38 Iq (typ) (mA) 0.17 Thermal resistance θJA (°C/W) 53 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 155 Operating temperature range (°C) -40 to 85
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 SOT-223 (DCQ) 6 45.89 mm² 6.5 x 7.06
  • 250-mA Low-Dropout Regulator With Enable
  • Available in Fixed and Adjustable (1.2 V to
    5.5 V) Versions
  • High PSRR (60 dB at 10 kHz)
  • Ultralow Noise (32 µVrms, TPS79428)
  • Fast Start-Up Time (50 µs)
  • Stable With a 2.2-µF Ceramic Capacitor
  • Excellent Load/Line Transient Response
  • Very Low Dropout Voltage (155 mV at Full Load)
  • Available in MSOP-8 and SOT223-6 Packages
  • APPLICATIONS
    • RF: VCOs, Receivers, ADCs
    • Audio
    • Bluetooth™, Wireless LAN
    • Cellular and Cordless Telephones
    • Handheld Organizers, PDAs

PowerPAD is a trademark of Texas Instruments.
Bluetooth is a trademark of Bluetooth SIG, Inc.
All trademarks are the property of their respective owners.
  • 250-mA Low-Dropout Regulator With Enable
  • Available in Fixed and Adjustable (1.2 V to
    5.5 V) Versions
  • High PSRR (60 dB at 10 kHz)
  • Ultralow Noise (32 µVrms, TPS79428)
  • Fast Start-Up Time (50 µs)
  • Stable With a 2.2-µF Ceramic Capacitor
  • Excellent Load/Line Transient Response
  • Very Low Dropout Voltage (155 mV at Full Load)
  • Available in MSOP-8 and SOT223-6 Packages
  • APPLICATIONS
    • RF: VCOs, Receivers, ADCs
    • Audio
    • Bluetooth™, Wireless LAN
    • Cellular and Cordless Telephones
    • Handheld Organizers, PDAs

PowerPAD is a trademark of Texas Instruments.
Bluetooth is a trademark of Bluetooth SIG, Inc.
All trademarks are the property of their respective owners.

The TPS794xx family of low-dropout (LDO) linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow-noise, fast start-up, and excellent line and load transient responses in small outline, MSOP-8 PowerPAD™ and SOT223-6 packages. Each device in the family is stable with a small 2.2-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 155 mV at 250 mA). Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than µA. The TPS79428 exhibits approximately 32 µVRMS of output voltage noise at 2.8 V output with a 0.1-µF bypass capacitor. Applications with analog components that are noise-sensitive, such as portable RF electronics, benefit from the high PSRR and low noise features as well as the fast response time.

The TPS794xx family of low-dropout (LDO) linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow-noise, fast start-up, and excellent line and load transient responses in small outline, MSOP-8 PowerPAD™ and SOT223-6 packages. Each device in the family is stable with a small 2.2-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 155 mV at 250 mA). Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than µA. The TPS79428 exhibits approximately 32 µVRMS of output voltage noise at 2.8 V output with a 0.1-µF bypass capacitor. Applications with analog components that are noise-sensitive, such as portable RF electronics, benefit from the high PSRR and low noise features as well as the fast response time.
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TPS796 正在供货 具有使能功能的 1A、低压降稳压器 P2P in SOT-223, higher current
功能与比较器件相同，但引脚排列有所不同
TPS7A20 正在供货 具有高 PSRR 的 300mA、超低噪声、低 IQ、低压降 (LDO) 线性稳压器 Much smaller size, much lower IQ, much lower noise, improved PSRR, reduced in-rush current, wider VIN Range

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类型 标题 下载最新的英语版本 日期
* 数据表 Ultralow-Noise, High-PSRR, Fast, RF, 250-mA Low-Dropout Linear Regulators 数据表 (Rev. E) 2006年 1月 3日
应用手册 LDO 噪声揭秘 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2020年 9月 16日
应用手册 PowerPAD™ Thermally Enhanced Package (Rev. H) 2018年 7月 6日
应用手册 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
测试报告 TI Power Reference Design for Xilinx® Artix®-7 (AC701) 2014年 5月 12日
用户指南 PMP7977 User's Guide 2013年 9月 11日
应用手册 简化的 LDO PSRR 测量 最新英语版本 (Rev.A) PDF | HTML 2010年 7月 28日
应用手册 Using 3.3-V Signals for Spartan-3 Configuration and JTAG Ports (Rev. A) 2004年 4月 13日
用户指南 DEM-SOT223LDO Demonstration Fixture 2003年 10月 15日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

DEM-SOT223LDO — 采用 SOT223 (DCQ) 封装与大多数正输出 LDO 兼容的 DEM-SOT223LDO

The Texas Instruments DEM-SOT223LDO demonstration module (DEM) helps designers evaluate the operation and performance of Texas Instruments low-dropout regulators (LDOs).  This module is compatible with most positive output LDOs offered in the SOT223 (DCQ) package.

用户指南: PDF
TI.com 上无现货
仿真模型

TPS79401 PSpice Transient Model

SLVMBR6.ZIP (81 KB) - PSpice Model
下载
仿真模型

TPS79401 Unencrypted PSpice Transient Model

SLVMBR7.ZIP (2 KB) - PSpice Model
下载
仿真模型

TPS79418 PSpice Transient Model

SLVMBU9.ZIP (80 KB) - PSpice Model
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仿真模型

TPS79418 Unencrypted PSpice Transient Model

SLVMBV0.ZIP (2 KB) - PSpice Model
下载
仿真模型

TPS79425 PSpice Transient Model

SLVMBV2.ZIP (82 KB) - PSpice Model
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仿真模型

TPS79425 Unencrypted PSpice Transient Model

SLVMBV1.ZIP (2 KB) - PSpice Model
下载
仿真模型

TPS79428 PSpice Transient Model

SLVMBU5.ZIP (83 KB) - PSpice Model
下载
仿真模型

TPS79428 Unencrypted PSpice Transient Model

SLVMBU6.ZIP (2 KB) - PSpice Model
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仿真模型

TPS79430 PSpice Transient Model

SLVMBU8.ZIP (83 KB) - PSpice Model
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仿真模型

TPS79430 Unencrypted PSpice Transient Model

SLVMBU7.ZIP (2 KB) - PSpice Model
下载
仿真模型

TPS79433 PSpice Transient Model

SLVMBU4.ZIP (83 KB) - PSpice Model
下载
仿真模型

TPS79433 Unencrypted PSpice Transient Model

SLVMBU3.ZIP (2 KB) - PSpice Model
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PCB 布局

PMP7977 PCB

TIDU151.PDF (6781 KB)
下载
参考设计

PMP7977 — 适用于 Artix 7 的模拟解决方案

该 Artix 7 电源管理参考设计板使用电源模块、线性稳压器和兼容 PMBus 的系统控制器来提供 FPGA（包括 DDR 存储器终端）所需的所有内核和辅助电压。数字电源图形用户界面用于监控电路板电源轨的电压和电流强度。
测试报告: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
HVSSOP (DGN) 8 Ultra Librarian
SOT-223 (DCQ) 6 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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