SPX2945中文资料400mA Low Dropout Voltage Regulator (LDOs)数据手册MaxLinear规格书

描述 Description

The SPX2945 is a low power voltage regulator. This device is an excellent choice for use in battery powered applications such as cordless telephones, radio control systems and portable computers. The SPX2945 features very low quiescent current (100μA typical) and very low dropout voltage. This includes a tight initial tolerance of 1% max and very low output temperature coefficient, making the SPX2945 useful as a low power voltage reference.
The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling voltage input of batteries. Another feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. The SPX2945 is offered in 3-pin TO-220 package, SO-8 (same pinout as SPX2951), SOT-223, surface mount 3-pin TO-252, 3-pin TO-263 packages and 5-pin TO-263.
The regulator output voltage (of the 8-pin SO-8) may be pin-strapped for a 3.3V and 5.0V or programmed from 1.24V to 20V with an external pair of resistors. Look for SPX2951 for 150mA and SPX2954 for 250mA applications.

特性 Features

·Output 3.3V, 5.0V at 400mA output
·Very low quiescent current, 100µA
·Low dropout voltage, 420mV at 400mA
·Extremely tight load and line regulation
·Very low temperature coefficient
·Current and thermal limiting
·Error flag warns of output dropout
·Logic controlled electronic shutdown
·Output programmable from 1.24V to 20V (for SO-8)

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)