Datasheet 搜索 > DC/DC转换器 > Linear Technology（凌力尔特） > LT3467ES6#TR 数据手册 > LT3467ES6#TR 数据手册 7/18 页
￥ 15.84
LT3467ES6#TR 数据手册 - Linear Technology（凌力尔特）
制造商:
Linear Technology（凌力尔特）
分类:
DC/DC转换器
封装:
TSOT-23-6
描述:
开关稳压器 LT3467 - 1.1A Step-Up DC/DC Converter with Integrated Soft-Start
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P5Hot
典型应用电路图在P1P11P12P13P14P18
原理图在P5P6
封装尺寸在P15
焊盘布局在P16
技术参数、封装参数在P3
应用领域在P1P6P7P8P9P10P11P12P13P14P18
电气规格在P3P4
导航目录
LT3467ES6#TR数据手册
Page:
of 18 Go
若手册格式错乱，请下载阅览PDF原文件
LT3467/LT3467A
7
3467afe
APPLICATIONS INFORMATION
GND
V
IN
SW
SS FB
V
IN
2.6V TO 4.2V
D1
L1
2.7μH
R1
402k
LT3467
3467 TA05a
C2
15μF
C4
3.3pF
C1
4.7μF
R2
133k
V
OUT
5V
765mA AT V
IN
= 4.2V,
540mA AT V
IN
= 3.3V,
360mA AT V
IN
= 2.6V
C1, C2: X5R OR X7R, 6.3V
D1: ON SEMICONDUCTOR MBRM120
L1: SUMIDA CR43-2R7
SHDN
OFF ON
C3
0.047μF
Figure 2. Single Li-Ion Cell to 5V Boost Converter (Same as 1st Page Application)
Table 1. Inductor Manufacturers
Sumida (847) 956-0666 www.sumida.com
TDK (847) 803-6100 www.tdk.com
Murata (714) 852-2001 www.murata.com
FDK (408) 432-8331 www.fdk.co.jp
Soft-Start
The soft-start feature provides a way to limit the inrush
current drawn from the supply upon start-up. An internal
250k resistor charges the external soft-start capacitor
to 1.255V. After the capacitor reaches 0.15V the rate of
voltage rise at the output of the comparator A1 tracks the
rate of voltage rise of the soft-start capacitor. This limits
the inrush current drawn from the supply during start-
up. The soft-start feature plays another important role in
applications where the switch will reach levels of 30V or
higher. During start-up, excessively high switch current,
together with the presence of high voltage can overstress
the switch. A properly used soft-start feature will keep the
switch current from overshooting. This practice will greatly
improve the robustness of such designs. Once the part is
shut down, the soft-start capacitor is quickly discharged
to 0.4V, then slowly discharged through the 250k resistor
to ground. If the part is to be shut down and re-enabled in
a short period of time while soft-start is used, you must
ensure that the soft-start capacitor has enough time to
discharge before re-enabling the part. Typical values of
the soft-start capacitor range from 10nF to 200nF.
Supply Current of Figure 2 During Start-Up
Without Soft-Start Capacitor
V
OUT
1V/DIV
I
SUPPLY
0.5A/DIV
0.1ms/DIV
3467 AI01
Supply Current of Figure 2 During Start-Up
with a 47nF Soft-Start Capacitor
V
OUT
1V/DIV
I
SUPPLY
0.5A/DIV
0.5ms/DIV
3467 AI02
器件 Datasheet 文档搜索
AiEMA 数据库涵盖高达 72,405,303 个元件的数据手册，每天更新 5,000 多个 PDF 文件
