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线性和低压降 (LDO) 稳压器

LP3882

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1.5A、超低压降稳压器

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LP3882

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产品详情

Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 1.31 Iout (max) (A) 1.5 Output options Fixed Output Vout (max) (V) 1.8 Vout (min) (V) 1.2 Fixed output options (V) 1.2, 1.5, 1.8 Noise (µVrms) 90 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 4 Thermal resistance θJA (°C/W) 40 Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 1.31 Iout (max) (A) 1.5 Output options Fixed Output Vout (max) (V) 1.8 Vout (min) (V) 1.2 Fixed output options (V) 1.2, 1.5, 1.8 Noise (µVrms) 90 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 4 Thermal resistance θJA (°C/W) 40 Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 110 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm) TO-263 (KTT) 5 154.8384 mm² (10.16 mm × 15.24 mm)
  • Ultra Low Dropout Voltage (110 mV at
    1.5A typ)
  • Low Ground Pin Current
  • Load Regulation of 0.04%/A
  • 60 nA Typical Quiescent Current in Shutdown
  • 1.5% Output Accuracy (25°C)
  • TO-220, DDPAK/TO-263 and SO PowerPad Packages
  • Over Temperature/Over Current Protection
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

  • Ultra Low Dropout Voltage (110 mV at
    1.5A typ)
  • Low Ground Pin Current
  • Load Regulation of 0.04%/A
  • 60 nA Typical Quiescent Current in Shutdown
  • 1.5% Output Accuracy (25°C)
  • TO-220, DDPAK/TO-263 and SO PowerPad Packages
  • Over Temperature/Over Current Protection
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

The LP3882 is a high current, fast response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which 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 these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in TO-220, DDPAK/TO-263 and SO PowerPad packages.

Dropout Voltage: 110 mV (typ) at 1.5A load current.

Ground Pin Current: 3 mA (typ) at full load.

Shutdown Current: 60 nA (typ) when S/D pin is low.

Precision Output Voltage: 1.5% room temperature accuracy.

The LP3882 is a high current, fast response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which 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 these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in TO-220, DDPAK/TO-263 and SO PowerPad packages.

Dropout Voltage: 110 mV (typ) at 1.5A load current.

Ground Pin Current: 3 mA (typ) at full load.

Shutdown Current: 60 nA (typ) when S/D pin is low.

Precision Output Voltage: 1.5% room temperature accuracy.
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* 数据表 LP3882 1.5A Fast-Response Ultra Low Dropout Linear Regulators 数据表 (Rev. F) 2013-4-2
选择指南 电源管理指南 2018 2018-7-31

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评估板

MLTLDO2EVM-037 — 用于 DCY、DDA 和 KVU 封装的通用 LDO 线性稳压器评估模块

借助采用多种封装选项的 MLTLDO2EVM-037 低压降 (LDO) 评估模块 (EVM)，设计工程师能评估可能用于其自身电路应用的线性稳压器采用多种常见封装时的运行情况和性能。这种 EVM 配置包含一个 DDA、3 引脚和 5 引脚 KVU 以及 DCY 封装，便于工程师焊接和评估部件。

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