主页 电源管理 线性和低压降 (LDO) 稳压器
主页
电源管理
线性和低压降 (LDO) 稳压器

TPS779

正在供货

具有使能和复位延迟功能的 250mA、10V、低压降稳压器

立即订购
数据表

可提供此产品的更新版本

open-in-new 比较替代产品
功能与比较器件相同但引脚有所不同
TLV767 正在供货 具有可调节输出和固定输出的 1A、16V 正电压低压降 (LDO) 线性稳压器 Alternative product with higher PSRR and better thermals in a 2x2 WSON and 3x3 MSOP-8 package

TPS779

正在供货
数据表 立即订购

产品详情

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.25 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 1.5 Fixed output options (V) 1.8, 2.5, 3 Noise (µVrms) 55 Iq (typ) (mA) 0.09 Thermal resistance θJA (°C/W) 243 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 PSRR at 100 KHz (dB) 24 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.25 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 5.5 Vout (min) (V) 1.5 Fixed output options (V) 1.8, 2.5, 3 Noise (µVrms) 55 Iq (typ) (mA) 0.09 Thermal resistance θJA (°C/W) 243 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 PSRR at 100 KHz (dB) 24 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Open Drain Power-On Reset With 220-ms Delay
  • 250-mA Low-Dropout Voltage Regulator
  • Available in 1.8-V, 2.5-V, 3-V, Fixed Output and Adjustable Versions
  • Dropout Voltage Typically 200 mV
    at 250 mA (TPS77930)
  • Ultralow 92-uA Quiescent Current (Typ)
  • 8-Pin MSOP (DGK) Package
  • Low Noise (55 uVrms) With No Bypass Capacitor (TPS77918)
  • 2% Tolerance Over Specified Conditions For Fixed-Output Versions
  • Fast Transient Response
  • Thermal Shutdown Protection
  • See the TPS773xx and TPS774xx Family of Devices for Active Low Enable
  • Open Drain Power-On Reset With 220-ms Delay
  • 250-mA Low-Dropout Voltage Regulator
  • Available in 1.8-V, 2.5-V, 3-V, Fixed Output and Adjustable Versions
  • Dropout Voltage Typically 200 mV
    at 250 mA (TPS77930)
  • Ultralow 92-uA Quiescent Current (Typ)
  • 8-Pin MSOP (DGK) Package
  • Low Noise (55 uVrms) With No Bypass Capacitor (TPS77918)
  • 2% Tolerance Over Specified Conditions For Fixed-Output Versions
  • Fast Transient Response
  • Thermal Shutdown Protection
  • See the TPS773xx and TPS774xx Family of Devices for Active Low Enable

The TPS779xx is a low-dropout regulator with integrated power-on reset. The device is capable of supplying 250 mA of output current with a dropout of 200 mV (TPS77930). Quiescent current is 92 uA at full load dropping down to 1 uA when the device is disabled. The device is optimized to be stable with a wide range of output capacitors including low ESR ceramic (10uF) or low capacitance (1uF) tantalum capacitors. The device has extremely low noise output performance (55 uVrms) without using any added filter capacitors. TPS779xx is designed to have a fast transient response for larger load current changes.

The TPS779xx is offered in 1.8-V, 2.5-V, and 3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V). Output voltage tolerance is 2% over line, load, and temperature ranges. The TPS779xx family is available in 8-pin MSOP (DGK) packages.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 200 mV at an output current of 250 mA for 3.3 volt option) 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 92 uA over the full range of output current, 0 mA to 250 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems.

The device is enabled when the EN pin is connected to a high-level input voltage. This LDO family also features a sleep mode; applying a TTL low signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 uA at TJ = 25°C.

The TPS779xx features an integrated power-on reset, commonly used as a supply voltage supervisor (SVS), or reset output voltage. The RESET\ output of the TPS779xx initiates a reset in DSP, microcomputer, or microprocessor systems at power-up and in the event of an undervoltage condition. An internal comparator in the TPS779xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage. When OUT reaches 95% of its regulated voltage, RESET\ will go to a high-impedance state after a 220 ms delay. RESET\ will go to low-impedance state when OUT is pulled below 95% (i.e. over load condition) of its regulated voltage.

The TPS779xx is a low-dropout regulator with integrated power-on reset. The device is capable of supplying 250 mA of output current with a dropout of 200 mV (TPS77930). Quiescent current is 92 uA at full load dropping down to 1 uA when the device is disabled. The device is optimized to be stable with a wide range of output capacitors including low ESR ceramic (10uF) or low capacitance (1uF) tantalum capacitors. The device has extremely low noise output performance (55 uVrms) without using any added filter capacitors. TPS779xx is designed to have a fast transient response for larger load current changes.

The TPS779xx is offered in 1.8-V, 2.5-V, and 3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V). Output voltage tolerance is 2% over line, load, and temperature ranges. The TPS779xx family is available in 8-pin MSOP (DGK) packages.

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 200 mV at an output current of 250 mA for 3.3 volt option) 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 92 uA over the full range of output current, 0 mA to 250 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems.

The device is enabled when the EN pin is connected to a high-level input voltage. This LDO family also features a sleep mode; applying a TTL low signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than 1 uA at TJ = 25°C.

The TPS779xx features an integrated power-on reset, commonly used as a supply voltage supervisor (SVS), or reset output voltage. The RESET\ output of the TPS779xx initiates a reset in DSP, microcomputer, or microprocessor systems at power-up and in the event of an undervoltage condition. An internal comparator in the TPS779xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage. When OUT reaches 95% of its regulated voltage, RESET\ will go to a high-impedance state after a 220 ms delay. RESET\ will go to low-impedance state when OUT is pulled below 95% (i.e. over load condition) of its regulated voltage.
open-in-new 查找其他 线性和低压降 (LDO) 稳压器
下载 观看带字幕的视频 视频

技术文档

star =有关此产品的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 5
类型 标题 下载最新的英语版本 日期
* 数据表 250-mA LDO Regulator with Integrated Reset in a MSOP8 Package 数据表 (Rev. D) 2002年 3月 22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 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
应用手册 Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A) 2006年 10月 13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）。

封装 引脚 下载
VSSOP (DGK) 8 查看选项
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

支持和培训

视频