Datasheet 搜索 > 稳压芯片 > TI（德州仪器） > LP5907UVE-1.8/NOPB 数据手册 > LP5907UVE-1.8/NOPB 数据手册 11/36 页
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LP5907UVE-1.8/NOPB 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
稳压芯片
封装:
XFBGA-4
描述:
TEXAS INSTRUMENTS LP5907UVE-1.8/NOPB 固定电压稳压器, LDO, 2.2V至5.5V, 120mV压差, 1.8V输出, 250mA输出, DSBGA-4
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P13
原理图在P1P11
封装尺寸在P20P23P24P25P27P28P29P30P33
焊盘布局在P21P34
标记信息在P23P24P25P26
封装信息在P19P23P24P25P26P27P28P29P30
技术参数、封装参数在P4
应用领域在P1P4P5P13P36
电气规格在P5P6P15
导航目录
LP5907UVE-1.8/NOPB数据手册
Page:
of 36 Go
若手册格式错乱，请下载阅览PDF原文件
IN
V
BG
1.20V
EN
+
EN
EN
GND
POR
+
OUT
1 M
V
IH
R
F
C
F
+
EN
EN
R
AD
Copyright © 2016, Texas Instruments Incorporated
11
LP5907
www.ti.com
SNVS798J –APRIL 2012–REVISED MARCH 2016
Product Folder Links: LP5907
Submit Documentation FeedbackCopyright © 2012–2016, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
Designed to meet the needs of sensitive RF and analog circuits, the LP5907 provides low noise, high PSRR, low
quiescent current, as well as low line and load transient response figures. Using new innovative design
techniques, the LP5907 offers class leading noise performance without the need for a separate noise filter
capacitor.
The LP5907 is designed to perform with a single 1-µF input capacitor and a single 1-µF ceramic output
capacitor. With a reasonable PCB layout, the single 1-µF ceramic output capacitor can be placed up to 10 cm
away from the LP5907 device.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 Enable (EN)
The LP5907 EN pin is internally held low by a 1-MΩ resistor to GND. The EN pin voltage must be higher than the
V
IH
threshold to ensure that the device is fully enabled under all operating conditions. The EN pin voltage must
be lower than the V
IL
threshold to ensure that the device is fully disabled and the automatic output discharge is
activated.
7.3.2 Low Output Noise
Any internal noise at the LP5907 reference voltage is reduced by a first order low-pass RC filter before it is
passed to the output buffer stage. The low-pass RC filter has a –3 dB cut-off frequency of approximately 0.1 Hz.
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