SPX2954A数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

The SPX2954 and SPX2954A are low power voltage regulators. These devices are an excellent choice for use in battery powered applications such as cordless telephones, radio control systems and portable computers. The SPX2954 and SPX2954A feature low quiescent current and low dropout voltage (typical 20mV at 100μA and 310mV at 250mA). This includes a tight initial tolerance (0.5% for SPX2954A), extremely good load and line regulation (0.05% typical) and very low output temperature coefficient (20 ppm/°C typical), making the SPX2954/SPX2954A useful as a low power voltage reference.
The error flag output feature is used as a power-on reset for warning of a low output voltage, due to a falling input voltage. The logic-compatible shutdown feature enables the regulator to be switched on and off. The SPX2954/SPX2954A is offered in 3-pin TO-92, TO-263, SOT-223 and TO-220 packages and an 8-pin SOIC package.

特性 Features

·5.0V and 3.3V versions at 250mA output
·Accurate 0.5% for SPX2954A
·Very low quiescent current
·Low dropout: 310mV at 250mA
·Extremely tight load and line regulation
·Very low temperature coefficient
·Current and thermal limiting
·Need only 1μF for stability
·Direct replacement for LP2954
·8-pin versions only
·Error flag warns of output dropout
·Logic controlled electronic shutdown
·Programmable output from 1.24V to 30V

应用 Application

Design ToolsPackagingPkg CodeDetailsQuantitiesDimensionsPDFNSOIC8·JEDEC Reference: MS-012
·MSL Pb-Free: L1 @ 260ºC
·MSL SnPb Eutectic: n/a
·ThetaJA: 128.4ºC/W (std); 96.8ºC/W (fused)