REG103

現行

具 power good 與賦能的 500-mA、15-V、低壓差電壓穩壓器

現在提供此產品的更新版本

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TPS7A26 現行 具有電源正常指示的 500mA、18V、超低 IQ、高準確度、可調整低壓差電壓穩壓器 Wider voltage range
TPS7B86-Q1 現行 具有電源良好指示的車用 500mA、40V 超低 IQ 低壓差 (LDO) 線性穩壓器 Automotive version

產品詳細資料

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 15 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 1.3 Fixed output options (V) 2.5, 3, 3.3, 5, 5.5 Rating Catalog Noise (µVrms) 33 PSRR at 100 KHz (dB) 20 Iq (typ) (mA) 1 Thermal resistance θJA (°C/W) 150 Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 115 Operating temperature range (°C) -40 to 85
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 15 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 1.3 Fixed output options (V) 2.5, 3, 3.3, 5, 5.5 Rating Catalog Noise (µVrms) 33 PSRR at 100 KHz (dB) 20 Iq (typ) (mA) 1 Thermal resistance θJA (°C/W) 150 Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 115 Operating temperature range (°C) -40 to 85
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-223 (DCQ) 6 45.89 mm² 6.5 x 7.06 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • NEW DMOS TOPOLOGY:
    Ultra Low Dropout Voltage:
    115mV Typ at 500mA and 3.3V Output
    Output Capacitor NOT Required for Stability
  • FAST TRANSIENT RESPONSE
  • VERY LOW NOISE: 33µVrms
  • HIGH ACCURACY: ±2% max
  • HIGH EFFICIENCY:
    IGND = 1mA at IOUT = 500mA
    Not Enabled: IGND = 0.5µA
  • 2.5V, 2.7V, 3.0V, 3.3V, 5.0V, AND ADJUSTABLE OUTPUT VERSIONS
  • FOLDBACK CURRENT LIMIT
  • THERMAL PROTECTION
  • OUTPUT VOLTAGE ERROR INDICATOR(1)
  • SMALL SURFACE-MOUNT PACKAGES: SOT223-5, DDPAK-5, SO-8
  • APPLICATIONS
    • PORTABLE COMMUNICATION DEVICES
    • BATTERY-POWERED EQUIPMENT
    • PERSONAL DIGITAL ASSISTANTS
    • MODEMS
    • BAR-CODE SCANNERS
    • BACKUP POWER SUPPLIES

All trademarks are the property of their respective owners.

  • NEW DMOS TOPOLOGY:
    Ultra Low Dropout Voltage:
    115mV Typ at 500mA and 3.3V Output
    Output Capacitor NOT Required for Stability
  • FAST TRANSIENT RESPONSE
  • VERY LOW NOISE: 33µVrms
  • HIGH ACCURACY: ±2% max
  • HIGH EFFICIENCY:
    IGND = 1mA at IOUT = 500mA
    Not Enabled: IGND = 0.5µA
  • 2.5V, 2.7V, 3.0V, 3.3V, 5.0V, AND ADJUSTABLE OUTPUT VERSIONS
  • FOLDBACK CURRENT LIMIT
  • THERMAL PROTECTION
  • OUTPUT VOLTAGE ERROR INDICATOR(1)
  • SMALL SURFACE-MOUNT PACKAGES: SOT223-5, DDPAK-5, SO-8
  • APPLICATIONS
    • PORTABLE COMMUNICATION DEVICES
    • BATTERY-POWERED EQUIPMENT
    • PERSONAL DIGITAL ASSISTANTS
    • MODEMS
    • BAR-CODE SCANNERS
    • BACKUP POWER SUPPLIES

All trademarks are the property of their respective owners.

The REG103 is a family of low-noise, low-dropout, linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low-dropout voltage (only 115mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 1mA (at IOUT = 500mA) and drops to 0.5µA in not enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions. The REG103 has very low output noise (typically 33µVrms for VOUT = 3.3V with CNR = 0.01µF), making it ideal for use in portable communications equipment. On-chip trimming results in high output voltage accuracy. Accuracy is maintained over temperature, line, and load variations. Key parameters are tested over the specified temperature range (–40°C to +85°C).

The SO-8 version of the REG103 has an ERROR\ pin that provides a power good flag, indicating the regulator is in regulation. The REG103 is well protected—internal circuitry provides a current limit that protects the load from damage. Thermal protection circuitry keeps the chip from being damaged by excessive temperature. In addition to the SO-8 package, the REG103 is also available in the DDPAK and the SOT223-5.

The REG103 is a family of low-noise, low-dropout, linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low-dropout voltage (only 115mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 1mA (at IOUT = 500mA) and drops to 0.5µA in not enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions. The REG103 has very low output noise (typically 33µVrms for VOUT = 3.3V with CNR = 0.01µF), making it ideal for use in portable communications equipment. On-chip trimming results in high output voltage accuracy. Accuracy is maintained over temperature, line, and load variations. Key parameters are tested over the specified temperature range (–40°C to +85°C).

The SO-8 version of the REG103 has an ERROR\ pin that provides a power good flag, indicating the regulator is in regulation. The REG103 is well protected—internal circuitry provides a current limit that protects the load from damage. Thermal protection circuitry keeps the chip from being damaged by excessive temperature. In addition to the SO-8 package, the REG103 is also available in the DDPAK and the SOT223-5.

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類型 標題 日期
* Data sheet DMOS 500mA Low-Dropout Regulator datasheet (Rev. D) 2005年 9月 22日
Application note LDO Noise Demystified (Rev. B) PDF | HTML 2020年 8月 18日
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
Application note Packaging Limits Range of Linear Regulators 2010年 5月 8日
User guide DEM-SOT223LDO Demonstration Fixture 2003年 10月 15日
User guide DEM-TO263LDO Demonstration Fixture 2003年 10月 15日
More literature DMOS Delivers Dramatic Performance Gains to LDO Regulators (EDN mag) 2001年 2月 14日

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開發板

DEM-SOT223LDO — 採用 SOT223 (DCQ) 封裝與最大正輸出 LDO 相容的 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.

使用指南: PDF
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開發板

TPS79301EVM — TPS79301 評估模組

使用指南: PDF
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開發板

TPS79328EVM — TPS79328 評估模組

The purpose of this EVM is to facilitate evaluation of the TPS793xx family of LDO regulators. Each EVM package contains one SLVP191 test board, with either a TPS79301DBV linear regulator or a TPS79328DBV linear regulator, as well as supporting passive components. The TPS79301DBV adjustable device (...)

使用指南: PDF
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian
SOT-223 (DCQ) 6 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian

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  • 進行中持續性的可靠性監測
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