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| 型號(hào)： | 5926-3870501MGA |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/22頁 |
| 文件大小： | 725K |
| 代理商： | 5926-3870501MGA |
LP2950/LP2951
Series of Adjustable Micropower Voltage Regulators
General Description
The LP2950 and LP2951 are micropower voltage regulators
with very low quiescent current (75 μA typ.) and very low
dropout voltage (typ. 40 mV at light loads and 380 mV at
100 mA). 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, 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 re-
sistors.
Careful design of the LP2950/LP2951 has minimized all con-
tributions to the error budget. This includes a tight initial tol-
erance (.5% typ.), extremely good load and line regulation
(.05% typ.) and a very low output voltage temperature coef-
ficient, making the part useful as a low-power voltage refer-
ence.
Features
n
5V, 3V, and 3.3V versions available
n
High accuracy output voltage
n
Guaranteed 100 mA output current
n
Extremely low quiescent current
n
Low dropout voltage
n
Extremely tight load and line regulation
n
Very low temperature coefficient
n
Use as Regulator or Reference
n
Needs minimum capacitance for stability
n
Current and Thermal Limiting
n
Stable with low-ESR output capacitors
LP2951 versions only
n
Error flag warns of output dropout
n
Logic-controlled electronic shutdown
n
Output programmable from 1.24 to 29V
Block Diagram and Typical Applications
LP2950
DS008546-25
LP2951
DS008546-1
July 2000
L
2000 National Semiconductor Corporation
DS008546
www.national.com
This Material Copyrighted by Its Respective Manufacturer
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 5926-3870501MPA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Series of Adjustable Micropower Voltage Regulators |
| 5926-3870501MXA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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