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线性和低压降 (LDO) 稳压器

LP2954

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250mA、30V、低压降稳压器

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数据表

LP2954

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数据表 立即订购

米6体育平台手机版_好二三四详情

Output options Adjustable Output Iout (max) (A) 0.25 Vin (max) (V) 30 Vin (min) (V) -20 Vout (max) (V) 29 Vout (min) (V) 1.23 Noise (µVrms) 80 Iq (typ) (mA) 0.21 Thermal resistance θJA (°C/W) 44 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 PSRR at 100 KHz (dB) 14 Dropout voltage (Vdo) (typ) (mV) 800 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 0.25 Vin (max) (V) 30 Vin (min) (V) -20 Vout (max) (V) 29 Vout (min) (V) 1.23 Noise (µVrms) 80 Iq (typ) (mA) 0.21 Thermal resistance θJA (°C/W) 44 Rating Catalog Load capacitance (min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 PSRR at 100 KHz (dB) 14 Dropout voltage (Vdo) (typ) (mV) 800 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6 TO-220 (NDE) 3 46.5328 mm² 10.16 x 4.58 TO-263 (KTT) 3 154.8384 mm² 10.16 x 15.24
  • 5-V Output within 1.2% Over Temperature
    (A Grade)
  • Adjustable 1.23-V to 29-V Output Voltage Available (LP2954IM and LP2954AIM)
  • Ensured 250-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Reverse Battery Protection
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Pin Compatible with LM2940 and LM340
    (5-V Version Only)
  • Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown
  • 5-V Output within 1.2% Over Temperature
    (A Grade)
  • Adjustable 1.23-V to 29-V Output Voltage Available (LP2954IM and LP2954AIM)
  • Ensured 250-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Reverse Battery Protection
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Pin Compatible with LM2940 and LM340
    (5-V Version Only)
  • Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown

The LP2954 is a 5-V micropower LDO with very low quiescent current (90 μA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250-mA load current).

The quiescent current increases only slightly at dropout (120 μA typical), which prolongs battery life.

The LP2954 with a fixed 5-V output is available in three-pin TO-220 and DDPAK/TO-263 packages. The adjustable LP2954 is provided in an 8-pin, small-outline SOIC package. The adjustable version also provides a resistor network which can be pin strapped to set the output to any voltage from to 1.23 V to 29 V.

Reverse battery protection is provided for the IN pin.

The tight line and load regulation (0.04% typical), as well as very low output temperature coefficient make the LP2954 well suited for use as a low-power voltage reference.

Output accuracy is ensured at both room temperature and over the entire operating temperature range.

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

The LP2954 is a 5-V micropower LDO with very low quiescent current (90 μA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250-mA load current).

The quiescent current increases only slightly at dropout (120 μA typical), which prolongs battery life.

The LP2954 with a fixed 5-V output is available in three-pin TO-220 and DDPAK/TO-263 packages. The adjustable LP2954 is provided in an 8-pin, small-outline SOIC package. The adjustable version also provides a resistor network which can be pin strapped to set the output to any voltage from to 1.23 V to 29 V.

Reverse battery protection is provided for the IN pin.

The tight line and load regulation (0.04% typical), as well as very low output temperature coefficient make the LP2954 well suited for use as a low-power voltage reference.

Output accuracy is ensured at both room temperature and over the entire operating temperature range.

For all available packages, see the orderable addendum at the end of the data sheet.
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类型 标题 下载最新的英语版本 日期
* 数据表 LP2954, LP2954A 5-V and Adjustable Micropower LDOs 数据表 (Rev. E) PDF | HTML 2016年 7月 28日
应用手册 AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 2013年 4月 23日
应用手册 Linear and Switching Voltage Regulator Fundamental Part 1 2007年 3月 21日

设计和开发

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）。

参考设计

TIDA-00202 — HIPERFACE 位置编码器接口参考设计

TIDA-00202 参考设计实现了一种连接至 HIPERFACE 位置编码器的符合 EMC 标准的工业模拟和数字混合接口。此设计对双向参数通道使用具有 IEC-ESD 和 IEC-EFT 保护的 3.3V 电源 RS485 收发器。对于模拟正弦/余弦信号通道，此设计提供两个选项，为具有和没有嵌入式 ADC 的处理器连接提供灵活性，或者同时使用这两个选项为其提供冗余性。第一个选项具有全差动双 12 位 ADC 及 SPI 输出，第二个选项具有双差动输入及单端模拟输出 (0-3.3V)。此设计采用 16V 到 36V 宽电压范围内的符合工业标准的 24V 输入。编码器的电源可以配置为 7 到 (...)
设计指南: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian
TO-220 (NDE) 3 Ultra Librarian
TO-263 (KTT) 3 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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