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线性和低压降 (LDO) 稳压器

TPS777

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具有使能和复位延迟功能的 750mA、10V、低压降稳压器

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TPS777

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产品详情

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.75 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 1.5 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Rating Catalog Noise (µVrms) 54 PSRR at 100 KHz (dB) 29 Iq (typ) (mA) 0.08 Thermal resistance θJA (°C/W) 43, 57.9 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.75 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 1.5 Fixed output options (V) 1.5, 1.8, 2.5, 3.3 Rating Catalog Noise (µVrms) 54 PSRR at 100 KHz (dB) 29 Iq (typ) (mA) 0.08 Thermal resistance θJA (°C/W) 43, 57.9 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 260 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Open Drain Power-On Reset With 200-ms Delay (TPS777xx)
  • Open Drain Power Good (TPS778xx)
  • 750-mA Low-Dropout Voltage Regulator
  • Avilable in 1.5-V, 1.8-V, 2.5-V, 3.3-V Fixed Output and Adjustable Versions
  • Dropout Voltage to 260 mV (Typ) at 750 mA (TPS77x33)
  • Ultralow 85 µA Typical Quiescent Current
  • Fast Transient Response
  • 2% Tolerance Over Specified Conditions for Fixed-Output Versions
  • 8-Pin SOIC and 20-Pin TSSOP PowerPAD™ (PWP) Package
  • Thermal Shutdown Protection

All trademarks are the property of their respective owners.
  • Open Drain Power-On Reset With 200-ms Delay (TPS777xx)
  • Open Drain Power Good (TPS778xx)
  • 750-mA Low-Dropout Voltage Regulator
  • Avilable in 1.5-V, 1.8-V, 2.5-V, 3.3-V Fixed Output and Adjustable Versions
  • Dropout Voltage to 260 mV (Typ) at 750 mA (TPS77x33)
  • Ultralow 85 µA Typical Quiescent Current
  • Fast Transient Response
  • 2% Tolerance Over Specified Conditions for Fixed-Output Versions
  • 8-Pin SOIC and 20-Pin TSSOP PowerPAD™ (PWP) Package
  • Thermal Shutdown Protection

All trademarks are the property of their respective owners.

TPS777xx and TPS778xx are designed to have a fast transient response and be stable with a 10-µF low ESR capacitors. This combination provides high performance at a reasonable cost.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 260 mV at an output current of 750 mA for the TPS77x33) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 µA over the full range of output current, 0 mA to 750 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a sleep mode; applying a TTL high signal to EN\ (enable) shuts down the regulator, reducing the quiescent current to 1 µA at TJ = 25°C.

The RESET\ output of the TPS777xx initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS777xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.

Power good (PG) of the TPS778xx is an active high output, which can be used to implement a power-on reset or a low-battery indicator.

The TPS777xx and TPS778xx are offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V for TPS77701 option and 1.2 V to 5.5 V for TPS77801 option). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS777xx and TPS778xx families are available in 8 pin SOIC and 20 pin PWP packages.

TPS777xx and TPS778xx are designed to have a fast transient response and be stable with a 10-µF low ESR capacitors. This combination provides high performance at a reasonable cost.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 260 mV at an output current of 750 mA for the TPS77x33) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 85 µA over the full range of output current, 0 mA to 750 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. This LDO family also features a sleep mode; applying a TTL high signal to EN\ (enable) shuts down the regulator, reducing the quiescent current to 1 µA at TJ = 25°C.

The RESET\ output of the TPS777xx initiates a reset in microcomputer and microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS777xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.

Power good (PG) of the TPS778xx is an active high output, which can be used to implement a power-on reset or a low-battery indicator.

The TPS777xx and TPS778xx are offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V for TPS77701 option and 1.2 V to 5.5 V for TPS77801 option). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges. The TPS777xx and TPS778xx families are available in 8 pin SOIC and 20 pin PWP packages.
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类型 标题 下载最新的英语版本 日期
* 数据表 TPS777/8xx: Fast-Transient-Response 750-mA LDO Voltage Regulators 数据表 (Rev. G) 2004年 1月 5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
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

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）。

参考设计

TIDA-00145 — 用于电动折叠侧视镜的汽车类无刷电机驱动器

此参考设计具有两个评估模块 (EVM)，可通过一个易于使用的平台来展示电动折叠侧镜电机驱动器的功能和性能。

此参考设计还可轻松评估能够驱动车辆侧视镜收回功能的全桥有刷直流电机驱动器。凭借内置的过流、热、击穿、UVLO 和宽输入电压（宽 VIN）范围等汽车保护功能，此电机驱动器使汽车能够在竞争激烈的市场环境中占据一席之地。

此外，此设计还提供了测试数据，让您可以快速评估用于折叠镜模块的 DRV8801-Q1 和 DRV8872-Q1 的性能。

设计指南: PDF
原理图: PDF
参考设计

TIDA-00144 — 汽车类 HVAC 风门电机控制

此 TIDA-00144 参考设计提供一个 1.6A 双 H 桥电机驱动器以及少量外部组件，可驱动汽车 HVAC 风门电机应用中的最多两个刷式直流电机。此设计通过 45V 最大工作电源电压实现脱离电池功能，还通过内部关断功能提供过流保护、短路保护、欠压锁定和过热警告。此设计通过整合 DRV8802EVM 板来形成该解决方案。
设计指南: PDF
原理图: PDF
参考设计

TIDA-00146 — 汽车类自适应头灯定位步进电机

此 TIDA-00146 参考设计提供集成电机驱动器解决方案，用于在汽车自适应前灯定位应用中驱动双极步进电机。此设计通过 45V 最大工作电源电压实现脱离电池功能。此外，此设计还通过内部关断功能提供过流保护、短路保护、欠压锁定和过热警告。此设计通过整合 DRV8824EVM 板来形成该解决方案。
设计指南: PDF
原理图: PDF
参考设计

TIDA-00111 — 具有中型转矩驱动器的步进电机系统

此双极步进电机系统采用一个 MSP430、一个 DRV8818 和一个 NEMA 23 电机。此系统适用于要求最高扭矩 140 oz-in 和转速最高 800 RPM 的应用。电机电压支持为 8V 到 35V，且最大电流为 2.5A。可通过多种配置选项对电流波形进行微调，包括调节后的电流电平、应用的微步进、电流衰减期间的 H 桥 FET 状态、电流衰减的时间间隔以及电流抗尖峰脉冲时间。电机驱动平台整合了针对短路、击穿、欠压和过热的保护措施。
测试报告: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
HTSSOP (PWP) 20 Ultra Librarian
SOIC (D) 8 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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