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线性和低压降 (LDO) 稳压器

TPS781

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具有使能功能的 150mA、超低 IQ、低压降稳压器

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数据表

TPS781

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产品详情

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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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 150mA, LDO Reg, Ultralow-Power, Iq 1uA w/ Pin-Selectable, Dual-Level Output Volt 数据表 (Rev. B) 2008年 5月 11日
白皮书 Understanding the Foundations of Quiescent Current in Linear Power Systems 2021年 2月 18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 A Topical Index of TI LDO Application Notes (Rev. F) 2019年 6月 27日
应用手册 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9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
EVM 用户指南 TPS78101 EVM 2008年 4月 28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）。

仿真模型

TPS78101 PSpice Transient Model

SBVM390.ZIP (21 KB) - PSpice Model
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仿真模型

TPS781250200 PSpice Transient Model (Rev. A)

SBVM102A.ZIP (22 KB) - PSpice Model
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仿真模型

TPS781330220 PSpice Transient Model

SBVM391.ZIP (22 KB) - PSpice Model
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参考设计

TIDEP0024 — AM437x 使用 LPDDR2 的低功耗挂起模式

此低功耗模式方案实现了小于 0.1 mW 的处理器功耗，同时使自刷新状态的 LPDDR2 存储器功耗保持在大约 1.6 mW。该系统解决方案由 AM437x Sitara 处理器、LPDDR2 存储器和 TPS65218 电源管理 IC 组成，并已针对新型低功耗模式进行优化，同时支持传统低功耗模式。通过关闭除 RTC 电源外的所有处理器电源，可最大限度降低处理器电源。包括电源控制在内的系统电源状态变换可由单个接口信号（PMIC_PWR_EN 信号）借助 PMIC 寄存器编程来执行。
设计指南: PDF
原理图: PDF
封装 引脚 下载
SOT-23-THN (DDC) 5 查看选项
WSON (DRV) 6 查看选项
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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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