主页 电源管理 线性和低压降 (LDO) 稳压器
主页
电源管理
线性和低压降 (LDO) 稳压器

LP38853

正在供货

具有使能功能的 3A、低输入电压 (1.04V)、可调节超低压降稳压器

立即订购
数据表

LP38853

正在供货
数据表 立即订购

产品详情

Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 1.04 Iout (max) (A) 3 Output options Adjustable Output Vout (max) (V) 1.8 Vout (min) (V) 0.8 Noise (µVrms) 150 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 10 Features Enable, Soft start Thermal resistance θJA (°C/W) 34 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 240 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 1.04 Iout (max) (A) 3 Output options Adjustable Output Vout (max) (V) 1.8 Vout (min) (V) 0.8 Noise (µVrms) 150 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 10 Features Enable, Soft start Thermal resistance θJA (°C/W) 34 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 240 Operating temperature range (°C) -40 to 125
TO-220 (NDZ) 7 82.6008 mm² (10.16 mm × 8.13 mm) TO-263 (KTW) 7 153.924 mm² (10.1 mm × 15.24 mm) HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • Wide VBIAS Supply Operating Range: 3 V to 5.5 V
  • Adjustable VOUT Range: 0.8 V to 1.8 V
  • Dropout Voltage of 240 mV (Typical) at 3-A Load Current
  • Precision VADJ Across All Line and Load Conditions:
    • ±1.5% VADJ for TJ = 25°C
    • ±2% VADJ for 0°C ≤ TJ ≤ +125°C
    • ±3% VADJ for –40°C ≤ TJ ≤ +125°C
  • Overtemperature and Overcurrent Protection
  • Stable with 10-µF Ceramic Capacitors
  • −40°C to +125°C Operating Junction Temperature Range
  • Wide VBIAS Supply Operating Range: 3 V to 5.5 V
  • Adjustable VOUT Range: 0.8 V to 1.8 V
  • Dropout Voltage of 240 mV (Typical) at 3-A Load Current
  • Precision VADJ Across All Line and Load Conditions:
    • ±1.5% VADJ for TJ = 25°C
    • ±2% VADJ for 0°C ≤ TJ ≤ +125°C
    • ±3% VADJ for –40°C ≤ TJ ≤ +125°C
  • Overtemperature and Overcurrent Protection
  • Stable with 10-µF Ceramic Capacitors
  • −40°C to +125°C Operating Junction Temperature Range

The LP38853 is a high-current, fast-response regulator that can maintain output voltage regulation with extremely low 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 NMOS power transistor; VIN is the input voltage which supplies power to the load. The use of an external bias rail allows the device 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 NMOS 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 and microcontroller core voltages, and switch-mode power-supply post regulators. Dropout Voltage: 240 mV (typical) at 3-A load current Low Ground Pin Current: 10 mA (typical) at 3-A load currentSoft Start: Programmable soft-start time

For all available packages, see the orderable addendum at the end of the data sheet.

The LP38853 is a high-current, fast-response regulator that can maintain output voltage regulation with extremely low 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 NMOS power transistor; VIN is the input voltage which supplies power to the load. The use of an external bias rail allows the device 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 NMOS 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 and microcontroller core voltages, and switch-mode power-supply post regulators. Dropout Voltage: 240 mV (typical) at 3-A load current Low Ground Pin Current: 10 mA (typical) at 3-A load currentSoft Start: Programmable soft-start time

For all available packages, see the orderable addendum at the end of the data sheet.
filter 查找其他 线性和低压降 (LDO) 稳压器
下载 观看带字幕的视频 视频

技术文档

未找到结果。请清除搜索并重试。
查看全部 7
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 LP38853 3-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator With Enable and Soft Start 数据表 (Rev. F) PDF | HTML 2016-11-4
应用手册 A Topical Index of TI LDO Application Notes (Rev. F) 2019-6-27
选择指南 电源管理指南 2018 2018-7-31
选择指南 Low Dropout Regulators Quick Reference Guide (Rev. P) 2018-3-21
应用手册 AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) 2013-4-24
应用手册 Application Note 1560 LP38852MR-ADJ Evaluation Board (cn) 2007-3-17
应用手册 Application Note 1504 LP38853S-ADJ Evaluation Board (cn) 2007-3-13

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

封装 引脚 CAD 符号、封装和 3D 模型
TO-220 (NDZ) 7 Ultra Librarian
TO-263 (KTW) 7 Ultra Librarian
HSOIC (DDA) 8 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

订购和质量

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

可获得 TI 工程师技术支持的 TI E2E™ 论坛

查看全部论坛主题 查看英文版全部论坛主题

所有内容均由 TI 和社区贡献者按“原样”提供，并不构成 TI 规范。请参阅使用条款。

如果您对质量、包装或订购 TI 产品有疑问，请参阅 TI 支持。​​​​​​​​​​​​​​

视频