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LP38842

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具有使能功能的 1.5A、低输入电压 (0.915V)、超低压降稳压器

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LP38842

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产品详情

Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.915 Iout (max) (A) 1.5 Output options Fixed Output Vout (max) (V) 1.5 Vout (min) (V) 0.8 Fixed output options (V) 0.8, 1.2, 1.5 Noise (µVrms) 90 PSRR at 100 KHz (dB) 29 Iq (typ) (mA) 32 Features Enable Thermal resistance θJA (°C/W) 35 Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 115 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.915 Iout (max) (A) 1.5 Output options Fixed Output Vout (max) (V) 1.5 Vout (min) (V) 0.8 Fixed output options (V) 0.8, 1.2, 1.5 Noise (µVrms) 90 PSRR at 100 KHz (dB) 29 Iq (typ) (mA) 32 Features Enable Thermal resistance θJA (°C/W) 35 Load capacitance (min) (µF) 4.7 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 115 Operating temperature range (°C) -40 to 125
TO-220 (KC) 5 45.212 mm² 10.16 x 4.45 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • Ideal for Conversion from 1.8V or 1.5V Inputs
  • Designed for use with low ESR Ceramic Capacitors
  • 0.8V, 1.2V and 1.5V Standard Voltages Available
  • Ultra Low Dropout Voltage (115mV at 1.5A typ)
  • 1.5% Initial Output Accuracy
  • Load Regulation of 0.1%/A (typical)
  • 30nA Quiescent Current in Shutdown (typical)
  • Low Ground Pin Current at all Loads
  • Over Temperature/Over Current Protection
  • Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

  • Ideal for Conversion from 1.8V or 1.5V Inputs
  • Designed for use with low ESR Ceramic Capacitors
  • 0.8V, 1.2V and 1.5V Standard Voltages Available
  • Ultra Low Dropout Voltage (115mV at 1.5A typ)
  • 1.5% Initial Output Accuracy
  • Load Regulation of 0.1%/A (typical)
  • 30nA Quiescent Current in Shutdown (typical)
  • Low Ground Pin Current at all Loads
  • Over Temperature/Over Current Protection
  • Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

The LP38842 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 and DDPAK/TO-263 packages.

Dropout Voltage: 115 mV (typ) at 1.5A load current.

Quiescent Current: 30 mA (typ) at full load.

Shutdown Current: 30 nA (typ) when S/D pin is low.

Precision Output Voltage: 1.5% room temperature accuracy.

The LP38842 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 and DDPAK/TO-263 packages.

Dropout Voltage: 115 mV (typ) at 1.5A load current.

Quiescent Current: 30 mA (typ) at full load.

Shutdown Current: 30 nA (typ) when S/D pin is low.

Precision Output Voltage: 1.5% room temperature accuracy.
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类型 标题 下载最新的英语版本 日期
* 数据表 LP38842 1.5A Ultra Low Dropout Linear Reg Stable w/Ceramic Output Cap 数据表 (Rev. C) 2013年 4月 2日
EVM 用户指南 AN-1457 LP3884X-ADJ Evaluation Board (Rev. A) 2013年 4月 24日

设计和开发

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封装 引脚 CAD 符号、封装和 3D 模型
TO-220 (KC) 5 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

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