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LP2950-30 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
封装:
TO-92-3
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3Hot
典型应用电路图在P16P17P18
原理图在P12P13
封装尺寸在P20P21P23P24
标记信息在P20P21
封装信息在P19P20P21P22P23P24
技术参数、封装参数在P4P5
应用领域在P1P32
电气规格在P5P6
导航目录
LP2950-30数据手册
Page:
of 32 Go
若手册格式错乱，请下载阅览PDF原文件
LP2951-50
1
2
3
4
8
7
6
5
V
OUT
SENSE
SHUTDOWN
GND
FEEDBACK
V
TAP
1 PF
V
OUT
= 5 V
330 kȍ
ERROR
V
IN
1 PF
V
IN
= 12 V
LP2950
,
LP2951
SLVS582I –APRIL 2006–REVISED NOVEMBER 2014
www.ti.com
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The LP295x devices are used as low-dropout regulators with a wide range of input voltages.
8.2 Typical Application
Figure 33. 12-V to 5-V Converter
8.2.1 Design Requirements
8.2.1.1 Input Capacitor (C
IN
)
A 1-μF (tantalum, ceramic, or aluminum) electrolytic capacitor should be placed locally at the input of the LP2950
or LP2951 device if there is, or will be, significant impedance between the ac filter capacitor and the input; for
example, if a battery is used as the input or if the ac filter capacitor is located more than 10 in away. There are
no ESR requirements for this capacitor, and the capacitance can be increased without limit.
8.2.1.2 Output Capacitor (C
OUT
)
As with most PNP LDOs, stability conditions require the output capacitor to have a minimum capacitance and an
ESR that falls within a certain range.
16 Submit Documentation Feedback Copyright © 2006–2014, Texas Instruments Incorporated
Product Folder Links: LP2950 LP2951
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