Datasheet 搜索 > 电源管理 > Linear Technology（凌力尔特） > LT3467ES6 数据手册 > LT3467ES6 数据手册 1/18 页
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LT3467ES6 数据手册 - Linear Technology（凌力尔特）
制造商:
Linear Technology（凌力尔特）
分类:
电源管理
封装:
SOT-163
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
1
3467afe
TYPICAL APPLICATION
DESCRIPTION
1.1A Step-Up DC/DC
Converter with
Integrated Soft-Start
The LT
®
3467/LT3467A switching regulators combine a
42V, 1.1A switch with a soft-start function. Pin compatible
with the LT1930, its low V
CESAT
bipolar switch enables the
device to deliver high current outputs in a small footprint.
The LT3467 switches at 1.3MHz, allowing the use of tiny,
low cost and low height inductors and capacitors. The
LT3467A switches at 2.1MHz, allowing the use of even
smaller components. High inrush current at start-up is
eliminated using the programmable soft-start function.
A single external capacitor sets the current ramp rate. A
constant frequency current mode PWM architecture results
in low, predictable output noise that is easy to fi lter.
The high voltage switch on the LT3467/LT3467A is rated
at 42V, making the devices ideal for boost converters up
to 40V as well as SEPIC and fl yback designs. The LT3467
can generate 5V at up to 540mA from a 3.3V supply or
5V at 450mA from four alkaline cells in a SEPIC design.
The LT3467A can generate 5V at up to 430mA from a 3.3V
supply or 15V at 135mA from a 3.3V supply. The LT3467/
LT3467A are available in a low profi le (1mm) 6-lead SOT-23
package and tiny 3mm × 2mm DFN package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Single Li-Ion Cell to 5V Boost Converter
FEATURES
APPLICATIONS
n
1.3MHz Switching Frequency (LT3467)
n
2.1MHz Switching Frequency (LT3467A)
n
Low V
CESAT
Switch: 330mV at 1.1A
n
High Output Voltage: Up to 40V
n
Wide Input Range: 2.4V to 16V
n
Dedicated Soft-Start Pin
n
5V at 540mA from 3.3V Input (LT3467)
n
5V at 430mA from 3.3V Input (LT3467A)
n
12V at 270mA from 5V Input (LT3467)
n
12V at 260mA from 5V Input (LT3467A)
n
Uses Small Surface Mount Components
n
Low Shutdown Current: <1μA
n
Pin-for-Pin Compatible with the LT1930 and LT1613
n
Low Profi le (1mm) ThinSOT
™
Package
n
Low Profi le (0.75mm) 8-Lead (3mm × 2mm)
DFN Package
n
Digital Cameras
n
White LED Power Supplies
n
Cellular Phones
n
Medical Diagnostic Equipment
n
Local 5V or 12V Supplies
n
TFT-LCD Bias Supplies
n
xDSL Power Supplies
GND
V
IN
SW
SS FB
V
IN
2.6V TO
4.2V
2.7μH
402k
LT3467
3467 TA01a
15μF
3.3pF
4.7μF
133k
V
OUT
5V
765mA AT V
IN
= 4.2V,
540mA AT V
IN
= 3.3V,
360mA AT V
IN
= 2.6V
SHDN
OFF ON
0.047μF
I
OUT
(mA)
EFFICIENCY (%)
600
95
90
85
80
75
70
65
60
55
50
3467 TA01b
100 900
200
300 400 500 700
800
V
IN
= 3.3V
V
IN
= 4.2V
V
IN
= 2.6V
Effi ciency
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