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线性和低压降 (LDO) 稳压器

LP2986

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具有可调节或固定电压配置的 200mA、16V 低压降稳压器

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功能与比较器件相同但引脚有所不同。
TPS7A25 正在供货 具有电源正常指示功能的 300mA、18V、超低 IQ、高精度、可调节低压降稳压器 Alternative product offering lower-IQ and higher accuracy in a 2x2 WSON package

LP2986

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产品详情

Rating Catalog Vin (max) (V) 16 Vin (min) (V) 2.1 Iout (max) (A) 0.2 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 1.23 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 160 PSRR at 100 KHz (dB) 42 Iq (typ) (mA) 0.1 Features Enable, Power good Thermal resistance θJA (°C/W) 38 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 180 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 16 Vin (min) (V) 2.1 Iout (max) (A) 0.2 Output options Fixed Output Vout (max) (V) 5 Vout (min) (V) 1.23 Fixed output options (V) 3, 3.3, 5 Noise (µVrms) 160 PSRR at 100 KHz (dB) 42 Iq (typ) (mA) 0.1 Features Enable, Power good Thermal resistance θJA (°C/W) 38 Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 180 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) WSON (NGN) 8 16 mm² (4 mm × 4 mm)
  • Wide Supply Voltage Range (16 V Maximum)
  • Ultra-Low-Dropout Voltage
  • 0.5% Output Voltage Accuracy (A Grade)
  • Ensured 200-mA Output Current
  • < 1-μA Quiescent Current when Shutdown
  • Low GROUND Pin Current at All Loads
  • High Peak Current Capability (400 mA Typical)
  • Overtemperature/Overcurrent Protection
  • −40°C to +125°C Junction Temperature Range
  • Wide Supply Voltage Range (16 V Maximum)
  • Ultra-Low-Dropout Voltage
  • 0.5% Output Voltage Accuracy (A Grade)
  • Ensured 200-mA Output Current
  • < 1-μA Quiescent Current when Shutdown
  • Low GROUND Pin Current at All Loads
  • High Peak Current Capability (400 mA Typical)
  • Overtemperature/Overcurrent Protection
  • −40°C to +125°C Junction Temperature Range

The LP2986 is a 200-mA high-precision LDO regulator with a wide input voltage supply. The device has two output voltage modes: a fixed-precision output mode and an adjustable output voltage via an external resistive divider.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2986 delivers superior performance:

  • Dropout Voltage: Typically 180 mV at 200-mA load, and 1 mV at 1-mA load.
  • GROUND Pin Current: Typically 1 mA at 200-mA load, and 200 μA at 10-mA load.
  • Sleep Mode: The LP2986 draws less than 1 μA quiescent current when SHUTDOWN pin is pulled low.
  • ERROR Flag: The built-in ERROR flag goes low when the output drops approximately 5% below nominal.
  • Precision Output: The standard product versions available can be pin-strapped (using the internal resistive divider) to provide output voltages of 5 V, 3.3 V, or 3 V with ensured accuracy of 0.5% (A grade) and 1% (standard grade) at room temperature.
For all available packages, see the orderable addendum at the end of the data sheet.

The LP2986 is a 200-mA high-precision LDO regulator with a wide input voltage supply. The device has two output voltage modes: a fixed-precision output mode and an adjustable output voltage via an external resistive divider.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2986 delivers superior performance:

  • Dropout Voltage: Typically 180 mV at 200-mA load, and 1 mV at 1-mA load.
  • GROUND Pin Current: Typically 1 mA at 200-mA load, and 200 μA at 10-mA load.
  • Sleep Mode: The LP2986 draws less than 1 μA quiescent current when SHUTDOWN pin is pulled low.
  • ERROR Flag: The built-in ERROR flag goes low when the output drops approximately 5% below nominal.
  • Precision Output: The standard product versions available can be pin-strapped (using the internal resistive divider) to provide output voltages of 5 V, 3.3 V, or 3 V with ensured accuracy of 0.5% (A grade) and 1% (standard grade) at room temperature.
For all available packages, see the orderable addendum at the end of the data sheet.
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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LP2986 Micropower, 200-mA Ultra-Low-Dropout Fixed or Adjustable Voltage Regulator 数据表 (Rev. I) PDF | HTML 2015-9-23
应用手册 Using the LM2660 and LP2986 to Generate a Regulated Negative Output Voltage 2007-3-21

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参考设计

PMP20873 — 效率高达 99% 且基于 GaN 的 1kW CCM 图腾柱功率因数校正 (PFC) 转换器参考设计

连续导通模式 (CCM) 图腾柱功率因数校正 (PFC) 是一款简单高效的电源转换器。  为了实现 99% 的效率，需要考虑许多设计细节。  PMP20873 参考设计采用 TI 的 600V GaN 功率级，LMG3410 和 TI 的 UCD3138 数字控制器。  设计概述详细介绍了连续导通模式 (CCM) 图腾柱拓扑的工作原理，给出了电路的详细设计考虑考量因素，并提供了磁性元件和固件控制方面的设计考虑因素。此转换器设计的工作频率为 100KHz。在交流线路过零处软启动可最大限度地减小电流尖峰并降低 THD。  PFC 固件实时测量交流电流和 PFC (...)
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
WSON (NGN) 8 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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