TPS794

正在供貨

具有使能功能的 250mA、低壓降穩壓器

產品詳情

Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 2.7 Iout (max) (A) 0.25 Output options Adjustable Output, Fixed Output Vout (max) (V) 5.4 Vout (min) (V) 1.22 Fixed output options (V) 1.8, 2.5, 2.8, 3, 3.3, 5.4 Noise (μVrms) 32 PSRR at 100 KHz (dB) 38 Iq (typ) (mA) 0.17 Features Enable Thermal resistance θJA (°C/W) 53 Load capacitance (min) (μF) 2.2 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 155 Operating temperature range (°C) -40 to 85
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 2.7 Iout (max) (A) 0.25 Output options Adjustable Output, Fixed Output Vout (max) (V) 5.4 Vout (min) (V) 1.22 Fixed output options (V) 1.8, 2.5, 2.8, 3, 3.3, 5.4 Noise (μVrms) 32 PSRR at 100 KHz (dB) 38 Iq (typ) (mA) 0.17 Features Enable Thermal resistance θJA (°C/W) 53 Load capacitance (min) (μF) 2.2 Regulated outputs (#) 1 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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類型 標題 下載最新的英語版本 日期
* 數據表 Ultralow-Noise, High-PSRR, Fast, RF, 250-mA Low-Dropout Linear Regulators 數據表 (Rev. E) 2006年 1月 3日
應用手冊 LDO 噪聲揭秘 (Rev. B) PDF | HTML 英語版 (Rev.B) PDF | HTML 2020年 9月 16日
應用手冊 PowerPAD? Thermally Enhanced Package (Rev. H) 2018年 7月 6日
應用手冊 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
測試報告 TI Power Reference Design for Xilinx? Artix?-7 (AC701) 2014年 5月 12日
用戶指南 PMP7977 User's Guide 2013年 9月 11日
應用手冊 簡化的 LDO PSRR 測量 最新英語版本 (Rev.A) PDF | HTML 2010年 7月 28日
應用手冊 Using 3.3-V Signals for Spartan-3 Configuration and JTAG Ports (Rev. A) 2004年 4月 13日
用戶指南 DEM-SOT223LDO Demonstration Fixture 2003年 10月 15日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

評估板

DEM-SOT223LDO — 采用 SOT223 (DCQ) 封裝與大多數正輸出 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.

用戶指南: PDF
TI.com 上無現貨
仿真模型

TPS79401 PSpice Transient Model

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

TPS79401 Unencrypted PSpice Transient Model

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

TPS79428 PSpice Transient Model

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

TPS79433 PSpice Transient Model

SLVMBU4.ZIP (83 KB) - PSpice Model
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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)
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參考設計

PMP7977 — 適用于 Artix 7 的模擬解決方案

該 Artix 7 電源管理參考設計板使用電源模塊、線性穩壓器和兼容 PMBus 的系統控制器來提供 FPGA（包括 DDR 存儲器終端）所需的所有內核和輔助電壓。數字電源圖形用戶界面用于監控電路板電源軌的電壓和電流強度。
測試報告: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
HVSSOP (DGN) 8 Ultra Librarian
SOT-223 (DCQ) 6 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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