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LP2950 的PDF资料 下载 ,467.52K

LP2950 的货源和报价 LP2950 的相关技术信息

相关型号

LM8560 LMD18200 LMD18245 LMG7420PLFC-X LP2951 MAX0011 MAX002 MAX003

LP2950 - Series of Adjustable Micropower Voltage Regulators

Features • 5V, 3V, and 3.3V versions available • High accuracy output voltage • Guaranteed 100mA output current • Extremely low quiescent current • Low dropout voltage • Extremely tight load and line regulation • Very low temperature coefficient • Use as Regulator or Reference • Needs minimum capacitance for stability • Current and Thermal Limiting • Stable with low-ESR output capacitors (10m to 6) General Description The LP2950 and LP2951 are micropower voltage regulators with very low quiescent current (75µA typ.) and very low dropout voltage (typ. More...

Typical Application *click for larger image Parametric Table     expand Parametric Table    collapse Output Current 100 mA InputMax Voltage 30 Volt Dropout Voltage 0.38 Volt Quiescent Current 0.075 mA On/Off Pin No Output Current 100 mA Output Min 3.3, 3, 5 Volt Output Max 3.3, 3, 5 Volt Output Voltage 3.3, 3, 5 Volt InputMax Voltage 30 Volt Dropout Voltage 0.38 Volt Quiescent Current 0.075 mA On/Off Pin No Error Flag No Watchdog No Adjustable Output No RegType LDO Temperature Min -40 deg C Temperature Max 125 deg C View Using Catalog Typical Performance *click for larger image Dropout Voltage Characteristic

Also Recommended LP2980 Improved Input Voltage, Output Current And Dropout Voltage. LP2981 Improved Input Voltage, Dropout Voltage And Quiescent Current. LP5900 Wide selection of voltage options Additional Resources Application Notes (see below) Connection Diagram *click for larger image TO-92 Package *click for larger image TO-252 Package

RoHS Compliance Information	Size in Kbytes	Date
LP2950/LP2951 Series of Adjustable Micropower Voltage Regulators	1205 Kbytes	25-May-05	View Online	Download	Receive via Email
LP2950/LP2951 Series of Adjustable Micropower Voltage Regulators (Japanese)	1187 Kbytes

Obsolete Parts

General Description

The LP2950 and LP2951 are micropower voltage regulators with very low quiescent current (75µA typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the LP2950/LP2951 increases only slightly in dropout, prolonging battery life.

The LP2950-5.0 is available in the surface-mount D-Pak package, and in the popular 3-pin TO-92 package for pin-compatibility with older 5V regulators. The 8-lead LP2951 is available in plastic, ceramic dual-in-line, LLP, or metal can packages and offers additional system functions.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V, 3V, or 3.3V output (depending on the version), or programmed from 1.24V to 29V with an external pair of resistors.

Careful design of the LP2950/LP2951 has minimized all contributions to the error budget. This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

Reliability Metrics

Application Notes

Title	Size in Kbytes	Date
AN-1148: Application Note 1148 Linear Regulators: Theory of Operation and Compensation	200 Kbytes	25-Sep-02	View Online	Download	Receive via Email
AN-1148 (Japanese): Application Note 1148 Linear Regulators: Theory of Operation and Compensation	216 Kbytes