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线性和低压降 (LDO) 稳压器

LP3891

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具有使能功能的 800mA、超低压降稳压器

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数据表

LP3891

正在供货
数据表 立即订购

米6体育平台手机版_好二三四详情

Output options Fixed Output Iout (max) (A) 0.8 Vin (max) (V) 5.5 Vin (min) (V) 1.3 Vout (max) (V) 1.8 Vout (min) (V) 1.2 Fixed output options (V) 1.2, 1.5, 1.8 Noise (µVrms) 150 Iq (typ) (mA) 4 Thermal resistance θJA (°C/W) 40 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 30 Dropout voltage (Vdo) (typ) (mV) 100 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.8 Vin (max) (V) 5.5 Vin (min) (V) 1.3 Vout (max) (V) 1.8 Vout (min) (V) 1.2 Fixed output options (V) 1.2, 1.5, 1.8 Noise (µVrms) 150 Iq (typ) (mA) 4 Thermal resistance θJA (°C/W) 40 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR at 100 KHz (dB) 30 Dropout voltage (Vdo) (typ) (mV) 100 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • Ultra Low Dropout Voltage (100mV at 0.8A 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-8 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 (100mV at 0.8A 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-8 Packages
  • Over Temperature/Over Current Protection
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

The LP3891 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-8 packages.

Dropout Voltage: 100 mV (typ) at 0.8A 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 LP3891 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-8 packages.

Dropout Voltage: 100 mV (typ) at 0.8A 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 LP3891 0.8A Fast-Response Ultra Low Dropout Linear Regulators 数据表 (Rev. D) 2013年 4月 2日

设计和开发

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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。

用户指南: PDF
TI.com 上无现货
封装 引脚 CAD 符号、封装和 3D 模型
HSOIC (DDA) 8 Ultra Librarian
TO-263 (KTT) 5 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

支持和培训

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