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LP38855-具有启用的 1.5A 快速响应高分辨率 LDO 线性稳压器
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TI产品 - LP38855介绍

LP38855 - 具有启用的 1.5A 快速响应高分辨率 LDO 线性稳压器

LP38855是TI德州仪器公司的一款单通道LDO产品，LP38855是具有启用的 1.5A 快速响应高分辨率 LDO 线性稳压器，本站介绍了LP38855的封装应用图解、特点和优点、功能等，并给出了与LP38855相关的TI元器件型号供参考。

LP38855 - 具有启用的 1.5A 快速响应高分辨率 LDO 线性稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品描述

The LP38855 is a high-current, fast-response regulator which can maintain output voltage regulation with an extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIAS provides power for the internal bias and control circuits, as well as drive for the gate of the N-MOS power transistor, while VIN supplies power to the load. The use of an external bias rail allows the part to operate from ultra low VIN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of this device makes it suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The LP38855 is available in TO-220 and DDPAK/TO-263 5-Lead packages.

Dropout Voltage: 130 mV (typical) at 1.5A load current.

Low Ground Pin Current: 10 mA (typical) at 1.5A load current.

Shutdown Current: 1 µA (typical) IIN(GND) when EN pin is low.

Precision Output Voltage: ±1.0% for TJ = 25°C and ±2.0% for 0°C ≤ TJ ≤ +125°C, across all line and load conditions

产品特性

  • Standard VOUT Values of 0.8V and 1.2V
  • Wide VBIAS Supply Operating Range of 3.0V to 5.5V
  • Stable with 10 µF Ceramic Capacitors
  • Dropout Voltage of 130 mV (Typical) at 1.5A Load Current
  • Precision Output Voltage Across All Line and Load Conditions:
    • ±1.0% for TJ = 25°C
    • ±2.0% for 0°C ≤ TJ ≤ +125°C
    • ±3.0% for -40°C ≤ TJ ≤ +125°C
  • Over-Temperature and Over-Current Protection
  • Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
  • Custom VOUT Values between 0.8V and 1.2V are Available
  • -40°C to +125°C Operating Temperature Range

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