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線性與低壓差 (LDO) 穩壓器

TPS781

現行

具啟用功能的 150-mA 超低 IQ 低壓降電壓穩壓器

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產品規格表

TPS781

現行
產品規格表 立即訂購

產品詳細資料

Output options Adjustable Output, Dual output, Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 5.5 Vin (min) (V) 2.2 Vout (max) (V) 5.25 Vout (min) (V) 1.2 Fixed output options (V) 2, 2.2, 2.5, 3.3 Noise (µVrms) 86 Iq (typ) (mA) 0.0005 Thermal resistance θJA (°C/W) 65 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR at 100 KHz (dB) 13 Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Dual output, Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 5.5 Vin (min) (V) 2.2 Vout (max) (V) 5.25 Vout (min) (V) 1.2 Fixed output options (V) 2, 2.2, 2.5, 3.3 Noise (µVrms) 86 Iq (typ) (mA) 0.0005 Thermal resistance θJA (°C/W) 65 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR at 100 KHz (dB) 13 Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125
SOT-23-THN (DDC) 5 8.12 mm² 2.9 x 2.8 WSON (DRV) 6 4 mm² 2 x 2
  • Low IQ: 1µA
  • 150mA, Low-Dropout Regulator with Pin-Selectable Dual Voltage Level Output
  • Low Dropout: 200mV at 150mA
  • 3% Accuracy Over Load/Line/Temperature
  • Available in Dual-Level, Fixed Output Voltages from 1.5V to 4.2V Using Innovative Factory EPROM Programming
  • Available in an Adjustable Version from 1.22V to 5.25V or a Dual-Level Output Version
  • VSET Pin Toggles Output Voltage Between Two Factory-Programmed Voltage Levels
  • Stable with a 1.0µF Ceramic Capacitor
  • Thermal Shutdown and Overcurrent Protection
  • CMOS Logic Level-Compatible Enable Pin
  • Available in DDC (TSOT23-5) or DRV (2mm × 2mm SON-6) Package Options
  • APPLICATIONS
    • TI MSP430 Attach Applications
    • Power Rails with Programming Mode
    • Dual Voltage Levels for Power-Saving Mode
    • Wireless Handsets, Smartphones, PDAs, MP3 Players, and Other Battery-Operated Handheld Products

All other trademarks are the property of their respective owners
  • Low IQ: 1µA
  • 150mA, Low-Dropout Regulator with Pin-Selectable Dual Voltage Level Output
  • Low Dropout: 200mV at 150mA
  • 3% Accuracy Over Load/Line/Temperature
  • Available in Dual-Level, Fixed Output Voltages from 1.5V to 4.2V Using Innovative Factory EPROM Programming
  • Available in an Adjustable Version from 1.22V to 5.25V or a Dual-Level Output Version
  • VSET Pin Toggles Output Voltage Between Two Factory-Programmed Voltage Levels
  • Stable with a 1.0µF Ceramic Capacitor
  • Thermal Shutdown and Overcurrent Protection
  • CMOS Logic Level-Compatible Enable Pin
  • Available in DDC (TSOT23-5) or DRV (2mm × 2mm SON-6) Package Options
  • APPLICATIONS
    • TI MSP430 Attach Applications
    • Power Rails with Programming Mode
    • Dual Voltage Levels for Power-Saving Mode
    • Wireless Handsets, Smartphones, PDAs, MP3 Players, and Other Battery-Operated Handheld Products

All other trademarks are the property of their respective owners

The TPS781 family of low-dropout (LDO) regulators offer the benefits of ultralow power (IQ = 1µA), miniaturized packaging (2×2 SON-6), and selectable dual-level output voltage levels. An adjustable version is also available, but does not have the capability to shift voltage levels.

The VSET pin allows the end user to switch between two voltage levels on-the-fly through a microprocessor-compatible input. This LDO is designed specifically for battery-powered applications where dual-level voltages are needed. With ultralow IQ (1µA), microprocessors, memory cards, and smoke detectors are ideal applications for this device.

The ultralow-power and selectable dual-level output voltages allow designers to customize power consumption for specific applications. Designers can now shift to a lower voltage level in a battery-powered design when the microprocessor is in sleep mode, further reducing overall system power consumption. The two voltage levels are preset at the factory through a unique architecture using an EPROM. The EPROM technique allows for numerous output voltage options between VSET low (1.5V to 4.2V) and VSET high (2.0V to 3.0V) in the fixed output version only. See the table in this data sheet or consult with your local factory representative for exact voltage options and ordering information; minimum order quantities may apply.

The TPS781 series are designed to be compatible with the TI MSP430 and other similar products. The enable pin is compatible with standard CMOS logic. This LDO is stable with any output capacitor greater than 1.0µF. Therefore, implementations of this device require minimal board space because of miniaturized packaging and a potentially small output capacitor. The TPS781 series IQ (1µA) also come with thermal shutdown and current limit to protect the device during fault conditions. All packages have an operating temperature range of TJ = -40°C to +125°C. For high-performance applications requiring a dual-level voltage option, consider the TPS780 series, with an IQ of 500nA and dynamic voltage scaling.

The TPS781 family of low-dropout (LDO) regulators offer the benefits of ultralow power (IQ = 1µA), miniaturized packaging (2×2 SON-6), and selectable dual-level output voltage levels. An adjustable version is also available, but does not have the capability to shift voltage levels.

The VSET pin allows the end user to switch between two voltage levels on-the-fly through a microprocessor-compatible input. This LDO is designed specifically for battery-powered applications where dual-level voltages are needed. With ultralow IQ (1µA), microprocessors, memory cards, and smoke detectors are ideal applications for this device.

The ultralow-power and selectable dual-level output voltages allow designers to customize power consumption for specific applications. Designers can now shift to a lower voltage level in a battery-powered design when the microprocessor is in sleep mode, further reducing overall system power consumption. The two voltage levels are preset at the factory through a unique architecture using an EPROM. The EPROM technique allows for numerous output voltage options between VSET low (1.5V to 4.2V) and VSET high (2.0V to 3.0V) in the fixed output version only. See the table in this data sheet or consult with your local factory representative for exact voltage options and ordering information; minimum order quantities may apply.

The TPS781 series are designed to be compatible with the TI MSP430 and other similar products. The enable pin is compatible with standard CMOS logic. This LDO is stable with any output capacitor greater than 1.0µF. Therefore, implementations of this device require minimal board space because of miniaturized packaging and a potentially small output capacitor. The TPS781 series IQ (1µA) also come with thermal shutdown and current limit to protect the device during fault conditions. All packages have an operating temperature range of TJ = -40°C to +125°C. For high-performance applications requiring a dual-level voltage option, consider the TPS780 series, with an IQ of 500nA and dynamic voltage scaling.
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類型 標題 日期
* Data sheet 150mA, LDO Reg, Ultralow-Power, Iq 1uA w/ Pin-Selectable, Dual-Level Output Volt datasheet (Rev. B) 2008年 5月 11日
White paper Understanding the Foundations of Quiescent Current in Linear Power Systems 2021年 2月 18日
Application note LDO Noise Demystified (Rev. B) PDF | HTML 2020年 8月 18日
Application note A Topical Index of TI LDO Application Notes (Rev. F) 2019年 6月 27日
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
EVM User's guide TPS78101 EVM 2008年 4月 28日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

模擬型號

TPS78101 PSpice Transient Model

SBVM390.ZIP (21 KB) - PSpice Model
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模擬型號

TPS781250200 PSpice Transient Model (Rev. A)

SBVM102A.ZIP (22 KB) - PSpice Model
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模擬型號

TPS781330220 PSpice Transient Model

SBVM391.ZIP (22 KB) - PSpice Model
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參考設計

TIDEP0024 — 使用 LPDDR2 的 AM437x 低功耗待機模式

This low power mode implementation realizes processor power consumption less than 0.1 mW while keeping LPDDR2 memory in self refresh consuming ~ 1.6 mW. The system solution is comprised of AM437x Sitara processor, LPDDR2 memory and TPS65218 power management IC and optimized for new low power mode (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23-THN (DDC) 5 Ultra Librarian
WSON (DRV) 6 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

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